what are three substances that make up a cell wall? what is one detail for each substance?
The three substances that makes up a cell wall include the following: cellulose microfibrils, hemicellulose and pectin.
What is a cell wall?A cell wall is defined as the rough and flexible layer that surrounds mostly the cells of plants and they are made up of components that contributes to its rigidity.
The substances that makes up the cell wall include the following:
Cellulose microfibrils: This part of the cell wall is made up of cellulose which are arranged in orthogonal layers. The cellulose microfibrils are said to be the major components of the cell wall that provides mechanical strength.Hemicellulose: These are part of the cell wall that has polysaccharides which is composed of beta 1,4 linked backbone. This component provides mechanical strength together with the cellulose.Pectin. This is part of the cell wall that is made up of acidic sugar-containing backbones with neutral sugar-containing side chains.Learn more about cell here:
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Which of the following should be labeled with the patient's name, the date and time of collection, and the initials of the person collecting the specimen?
the following should be labeled with the patient's name, the date and time of collection, and the initials of the person collecting the specimen :
-Specimen
-collection tubes
-Slides
To ensure accurate sample identification, proper specimen labeling is essential. Scan evey labeled container with an electronic handheld device to accomplish the collection process. Complete the collection process in the computer system for every effectively collected sample if not using an electronic hand-held device.
To safeguard patients from harm caused by incorrectly labeled specimens, laboratory policy requires that proper labeling requirements be met at all times. Every specimen brought to the laboratory must be labeled on the container it is kept in.
To ensure patient safety, it is critical to correctly identify patients and label specimens. If a specimen is not correctly identified, it can result in delayed or incorrect diagnoses, missed or incorrect treatments, blood transfusion errors, and other problems.
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which pathogen:description pair among a-e is incorrectly matched? a. treponema pallidum: can become a latent infection that later results in shingles b. staphylococcus aureus: some strains form exotoxins that cause gastroenteritis c. streptococcus mutans: gram-positive, alpha-hemolytic pathogen that can cause cavities in your teeth. d. streptococcus pneumoniae: primary cause of bacterial pneumonia among humans e. yersinia pestis: vector borne disease that causes a systemic infection. f. a-e are all correctly matched
Option (a) is correct. Treponema palladium can become a latent infection that later results in shingles is incorrectly matched.
Treponema palladium is a bacterium that
causes the STD known as syphilis. Without
a proper treatment, syphilis can have
detrimental repercussions on one's health. Treponema palladium can become a latent infection that later results in shingles is incorrectly matched.
By coming into contact with a chancre,
or sore, that is characteristic of syphilis, a
person can contract the disease. Cancers
can develop in, on, or near the lips, mouth,
rectum, etc. The spread of syphilis can
occur through oral, or vaginal intercourse.
Syphilis can potentially be passed from a
pregnant woman to her unborn child. Syphilis can spread to an unborn child when a pregnant person has it. Syphilis testing ought to be done on all expectant women at their initial prenatal appointment. At birth and during the third trimester (28 weeks gestation), some people will require additional testing. This includes those
who reside in places with high syphilis prevalence or who are susceptible to
contracting the disease while pregnant.
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or a particular teratogen, the severity of damage to the embryo or fetus and the type of defect are influenced by which of the following?
genetic susceptibility
time of exposure
solar exposure
the dosage
genetic susceptibility Having certain medical conditions, such as obesity or uncontrolled diabetes before and during pregnancy embryo or fetus and the type of defect are influenced.
Which one of the following poses a significant risk for teratogenic effects on embryonic development?Some pharmaceuticals, illicit drugs, tobacco, chemicals, alcohol, some diseases, and in some situations, unmanaged health issues in the expectant parent are examples of common teratogens.
Which of the four teratogen kinds are they?Physical agents, metabolic circumstances, infections, and finally, medications and chemicals, are the four categories into which teratogens are divided. The Greek word meaning monstrous.
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which of these places is most likely to have no bacteria present? question 31 options: floor of a damp cellar farm pond human respiratory system inside of a pizza oven
Inside of a pizza oven. Bacteria are limited in their ability to withstand heat, like the majority of living things.
Food-borne bacteria can be eliminated by a pizza oven. The majority of food produced in a pizza oven would come out with the majority of the bacteria or virus on it gone, but this does not mean the food has been entirely sterilised. Both bacterial spores and heat-stable bacterial toxins cannot be destroyed by a pizza oven.
Naturally, baking destroys any bacteria that may be on a pizza. The explanation is that an oven, even a pizza oven, is one environment where bacteria and other germs cannot survive because of the high temperatures.
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which ribosome may terminate transcription unit in prokaryotes
Answer:
Transcription is Protein Synthesis
Explanation:
DNA to mRNA is by the ribosome Protein Synthesis
a system of records notice is not required if an organization determines that pii will be stored using a system of records. T/F
False, a system of records notice is not required if an organization determines that pii will be stored using a system of records.
A system of record (SOR) or source system of record (SSoR) in data management is an information storage system (usually implemented on a computer system running a database management system) that acts as the authoritative data source for a particular data element or piece of information. The need to identify systems of record may become critical in organisations where management information systems have been established by taking output data from several source systems, processing this data again, and then expressing the result for a new business application. In certain circumstances, different information systems may disagree about the same piece of information. The time of the extract, transform, and load procedures, as well as these variances in viewpoint and the use of different sources.
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If an individual had an excess of ADH
in their bloodstream, they retain more
water. What do you think would
happen to the urine because of it?
Would it have more water or less
water in it? Would it be bright yellow
or pale yellow? Explain your
reasoning.
If the organism secretes an excess of ADH, urine would be less diluted and showing a bright yellow color due to salts concentration. Options: less water in it and bright yellow.
What is the ADH hormone?
Anti Diuretic Hormone is a molecule that helps kidneys to control water loss through urine.
The ADH, also known as vasopressin hormone, is released by changes in serum osmolarity or blood volume. Its function is to keep homeostasis and make kidneys conserve or keep water by concentrating urine and by reducing its volume. Through these actions, the antidiuretic hormone stimulates water reabsorption, according to the organism's needs.
When the organism secretes too much ADH, the body retains too much water, and blood volume increases.
In these cases, urine would have less water and would be bright yellow because there would be a higher concentration of salts and other waste elements.
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arrange the statement of events below in the order that best describes the sequence of events in the pathology of clostridium perfringens posioning once contaminated food has been ingested
Clostridium perfringens is found greatly in the environment in soil, rotting greenery and marine sediment, as well as in the intestinal tract of creatures. The bacteria can create endospores, apt of surviving adverse conditions for long periods of time.
Clostridium perfringens food poisoning is
critical gastroenteritis induced by ingestion of contaminated food. Signs are watery diarrhea and abdominal cramps. Diagnosis is by identifying C. perfringens in infected food or in stool. Thus, Clostridium perfringens food poisoning is critical gastroenteritis caused by ingestion of contaminated food.
Clostridium perfringens bacteria are one of the most common causes of food poisoning. CDC estimates that the bacterium causes nearly 1 million foodborne illnesses in the United States every year. C. perfringens makes spores, which are inactive forms of the bacterium that help it survive heat, dryness, and other environmental conditions. C. perfringens spores can transform into active bacteria, which multiply in the food. After someone eats food containing C. perfringens, it can produce a toxin (poison) that causes diarrhea.
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2. What is happening on section A of the graph? Justify your reasoning. Include a term to
describe this part of the graph.
3. What is happening on section B of the graph? Justify your reasoning. Include a term to
describe this part of the graph
In section A of the graph the number of sales per year is increasing continuously. While in section the the sale is decreasing.
What is graph?Graph is defined as a visual depiction or diagram that shows information or values in an ordered way. Graphs and charts are useful visual aids because they make information accessible and quick to understand.
Using bar graphs, numbers that are unrelated to one another can be displayed. Pie charts to illustrate the division of a whole into its component components. You can see how numbers have changed over time in line graphs.
Thus, in section A of the graph the number of sales per year is increasing continuously. While in section the the sale is decreasing.
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Approximately _____ of the variability amongst individuals'personalities is believed to be attributed to genetic factors.
As per twin examinations, around 40-60% of the change in the Large Five is heritable,5, 6, 7 with some cross-over in heritability between character qualities themselves.
In many diseases genetic factors are significant. This implies that part, or the gamble, is all passed down from one's folks. Certain sicknesses are brought about by an irregularity in one single quality and CADASIL is one of these illnesses.
For instance, qualities are the reason one youngster has light hair like their mom, while their kin have earthy colored hair like their dad. Qualities likewise decide why a few sicknesses run in families and whether children will be male or female.
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which of the following properties helps explain why a city near the pacific ocean experiences less dramatic changes in temperature during the day compared to a city farther inland? I. Water forms hydrogen bonds.
II. Water has a low specific heat.
III. Water has high surface tension.
Water has a high specific heat.
Due to the high specific heat of water, which means that in order to slightly raise or slightly lower the temperature of water, respectively, a huge amount of heat must be removed, cities near the ocean experience less change and extreme temperature than inland cities.
Due to the fact that water warms up during the day far more slowly than concrete inland cities do, cities near the seaside have milder temperatures than those in inland areas. Ocean water cools down during the night much more slowly than concrete built upland cities. Because of this, the temperature in coastal cities doesn't drop as much, resulting in less of a difference between day and night time temperatures and less extreme temperatures than in inland cities.
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You are working with a research group investigating the effect of the environment on the community of organisms that lives there. This week you are looking at North American Deciduous Forests. What should you be observing?
A. Population of Deer
B. All of these
C. Population of Elm trees
D. Population of Blue Jays
An ecosystem is a group of living things and the natural surroundings in which they live.
What kind of system is created when a group of creatures interact with their surroundings? Ecosystems can be terrestrial, aquatic, or marine and come in a variety of sizes.The term "biome" refers to broad classifications of terrestrial ecosystems.Ecology is the study of the interactions between living things, such as humans, and their natural surroundings.It seeks to understand the fundamental links between humans, animals, and other living things. Lack of food as the lands grow sterile and the oceans lose their seafood.biodiversity loss caused by the extinction of entire species of living creatures as a result of deforestationOver time, pollution will become uncontrollable and have an impact on our health.All forms of life on Earth may be unable to withstand the increasing temperatures.To learn more about ecosystem refer
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Nerve impulses leading to the brain carry information about cool temperatures on the skin. The nerve fibers sending these signals will most likely belong to which division of the nervous system?
A) Sensory (afferent) division.
B) Motor (efferent) division.
C) Sympathetic division.
D) Parasympathetic division.
The nerve fibers sending Nerve impulses leading to the brain carry information about cool temperatures on the skin will most likely belong to Sensory (afferent) division of the central nervous system.
The afferent division, also known as the sensory division, transfers impulses from peripheral organs to the CNS. The efferent or motor division sends impulses from the CNS to the peripheral organs in order to produce an effect or action.
Sensory neurons collect and transmit necessary data from the skin, fascia, skeletal muscles, joints, and special senses to the central nervous system. These neurons are referred to as afferent since they initiate action potentials in the direction of the central nervous system.
The sensory nervous system is divided into two parts: somatic and visceral. The somatic division transmits sensory information from the skin, skeletal muscle, bone, tendons, and other tissues. Smooth muscle, cardiac muscle, and organ glands send sensory information to the visceral division.
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In hamsters, the allele for a brown coat color (B) dominates over the allele for a tan coat color (b). If a tan hamster is crossed with a heterozygous brown hamster, which of the following genotypic ratios can be expected? (B.6F) Question 6 options: 2 BB: 0 Bb: 2 bb 1 BB: 2 Bb: 1 bb 2 BB: 1 Bb: 0bb 0 BB: 2 Bb: 2 bb
The genotypic ratios when hamsters are crossed is Half brown, half tan, half brown, half tan. The allele of parent of brown is: Bb Tan parent allele is bb. The result when crossed is: Bb, bb, Bb, bb.
What is dominant allele?Dominance is a phenomena in genetics when one version of a gene on one copy of a chromosome obscures or overrides another version of the same gene on the other copy of the chromosome. Dominant refers to the first variant, and recessive to the second.
What is recessive allele?A particular allele that, when present alone, has no effect on the person is known as recessive allele. The expression of the trait requires the presence of two copies of the allele.
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These trees for six different groups of organisms for (A ) tree frogs, (B ) caecilians, (C ) uropeltid snakes,
(D ) freshwater fishes, (E ) freshwater shrimps, and (F ) freshwater crabs are all colored based on whether the species come from mainland India or Sri Lanka. Assuming these trees and the reconstruction of ancestral geographic distributions are accurate, which of the trees includes a single well-supported migration from Sri Lanka back to southern India?
These trees for six different groups of organisms for (A ) tree frogs, and (F ) freshwater crabs are all colored based on whether the species come from mainland India or Sri Lanka.
Freshwater environments in the tropics support a variety of indigenous wildlife, including freshwater crabs, but many of these species are now in immediate danger due to habitat loss and degradation. The condition of freshwater crabs is unknown, but research on freshwater fish and amphibians indicates that between one-third and fifty percent of the species in some tropical freshwaters are either extinct or endangered. With 1280 species worldwide, freshwater crabs account for one-fifth of all brachyurans.
As a result, we conducted a thorough IUCN Red List assessment of freshwater crabs, the first time a research of this kind has been undertaken globally for any group of freshwater invertebrates. Unexpectedly high threat levels were found when the conservation status of every known species from the Americas, Africa, Europe, Asia, and Australasia was examined.
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What is the pH in az phoenix ecosystem? 50 points
The pH in Arizona phoenix ecosystem is 7 - 8 .
Explain phoenix ecosystem.
The Valley of the Sun, commonly known as the Phoenix metropolitan area, which is a portion of the Salt River Valley, is centered on Phoenix. The state of Arizona in the United States has Phoenix as its capital and largest city.
The largest city in America in this climate zone, Phoenix has a hot desert climate resembling that of the Sonoran Desert. Phoenix features short, pleasant winters and long, extremely scorching summers. The city is located in one of the sunniest parts of the planet, with sunshine duration that rivals that of the Sahara.
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compare and contrast between bacterial cell division and eukaryotic cell division in terms of length of time it takes.
Bacterial cell division in three stages whereas eukaryotes divide their cells in just two stages.
Prokaryotes divide their cells in three stages DNA replication, chromosome segregation, and chromosome separation whereas eukaryotes divide their cells in just two stages nuclear division and cytoplasmic division, often known as cytokinesis.
There are two different categories of cell division mechanisms in eukaryotes. Meiosis is the reproductive cell division in eukaryotic cells, while mitosis is the vegetative cell division. On the other hand, prokaryotes (bacteria and archaea) often exclusively exhibit binary fission, a type of vegetative cell division.
Prokaryotic cell division occurs through binary fission, whereas eukaryotic cell division can happen either through mitosis or meiosis. This is the main distinction between prokaryotic and eukaryotic cell division.
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a series of studies on mutants of Neurospora identified three classes of mutants that needed arginine added to minimal media in order to grow. The production of arginine includes the following steps: precursor → ornithine → citrulline → arginine. What nutrient(s) have to be supplied to the mutants that had a defective enzyme for the ornithine → citrulline step in order to grow?
a. the precursor
b. citrulline
c. the precursor, ornithine, and citrulline
d. either ornithine or citrulline
e. ornithine
Citrulline have to be supplied to the mutants of Neurospora that identified three classes of mutants that needed arginine added to minimal media that had a defective enzyme in order to grow.
The amino acid arginine is synthesized by first converting a precursor to ornithine, that is then transformed to citrulline, which is then converted to arginine. Every one of these three steps is controlled by a different enzyme, which is encoded by a different gene.
The synthetic pathway is undamaged in wild type Neurospora, and spores can thrive on minimal medium even without addition of amino acids. Some enzymes in the pathway are non-functional in mutant Neurospora, preventing spores from growing on minimal medium. All of the mutants in this section are referred to as arg- mutants because they all grow when the minimal medium is supplemented with arginine.
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A researcher is crossing two organisms that are heterozygous for three Mendelian, unlinked traits (XxYyZz). What is the fraction of offspring that are predicted to have the genotype xxyyzz?
a. 1/64
b. 1/32
c. 1/6
d. 1/8
The fraction of offspring that are predicted to have the genotype xxyyzz = 1/64
Cross: XxYyZz x XxYyZz
Gametes: XYZ, XyZ, XYz, Xyz, xYZ, xyZ, xYz, xyz
XYZ, XyZ, XYz, Xyz, xYZ, xyZ, xYz, xyz
Performing a Punnett square would be too extensive. So we can think about an easier way.
We know that the three genes assort independently from each other. So we can analyze each trait separately, to get
the genotypic proportion of the offspring.
Cross: Xx x XxF1) 1/4 XX, 1/2 Xx, 1/4 xx
Cross: Yy x YyF1) 1/4 YY, 1/2 Yy, 1/4 yy
Cross: Zz x ZzF1) 1/4 ZZ, 1/2 Zz, 1/4 zz
So, to get all the possible genotypic proportions of the progeny, for each combination, we must multiply their respective genotypic proportions. For instance,
Genotype Proportion
XXYYZZ 1/4 x 1/4 x 1/4 = 1/64
XXYyZZ 1/4 x 1/2 x 1/4 = 1/32
XXYYZz 1/4 x 1/4 x 1/2 = 1/32
XXYyZz 1/4 x 1/2 x 1/2 = 1/16
And so on until you complete all the possible combinations.
We are asked about the fraction of offspring that are predicted to have the genotype xxyyzz. So, following what we did before, we just need to multiply the proportions only for homozygous recessive genotypes. This is
1/4 xx 1/4 yy 1/4 zzHence, Genotype Proportion xxyyzz 1/4 x 1/4 x 1/4 = 1/64
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Our cells have a signaling pathway that begins with an insulin receptor that results in a cellular response to regulate blood glucose levels. Type one diabetes is caused by destruction of beta cells in the pancreas to produce insulin. Which of the following best explains how insulin injections affect signal transduction in an individual type 1 diabetes?
a) they allow alternate signaling transduction pathways to control glucose levels
b) they open channels to allow signaling molecules to enter pancreatic cells
c) they provide a signaling molecule to begin the signal transduction pathway
d) they serve as second messengers to regulate glucose uptake by cells
The option (b) is correct- they open channels to allow signaling molecules to enter pancreatic cells.
What is insulin ?
The hormone insulin lowers the blood level of glucose, a type of sugar. The pancreatic beta cells create and release glucose when the blood glucose level rises, such as after eating.
What is glucose ?
The major sugar present in your blood is known as blood sugar or glucose. All of your body's cells receive glucose from your blood to utilize as fuel. Blood sugar levels that are too high are a symptom of diabetes.
Therefore, option (b) is correct- they open channels to allow signaling molecules to enter pancreatic cells.
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if the human pancreas is not functional. name the hormone that is deficient
Answer:
The deficient hormone would be insulin.
Explanation:
If insulin is deficient, you are at risk of getting type 2 diabetes.
Himalayan rabbits are a breed of rabbits with highly variable fur color. If genetically similar rabbits are raised in environments that have different temperature conditions, the rabbits can have different color patterns.
Which of the following statements best explains how the fur color can be different in Himalayan rabbits raised under different temperature conditions?
The environment determines how the genotype is expressed. The environment influences gene activity, which leads to a change in the phenotype of fur color.
Coloration of the fur of Himalayan rabbits is regulated by gene C. The rabbit raised at 20°C (left) has pigmentation on its ears, nose, and paws because the gene is active when environmental temperatures are between 15 and 25°C. These areas are where the rabbit's body loses the most heat. Because gene C is dormant at temperatures above 30°C, the rabbit raised in this environment (on the right) lacks fur pigmentation.
Gene expression for fur color in Himalayan rabbits is influenced by temperature. The follicle cells taken from Himalayan rabbits tend to die when kept at warmer temperatures. Himalayan rabbits use fur color to communicate fitness during the breeding season.
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Use the following graph to answer questions 1-5
Harbor seals have a tendency to populate harbors. The following is data that a biologist has kept
on the number of harbor seals located on the docks. The biologist drew in a best-fit line.
1. Why did the biologist draw the line in this way? Does it make sense to draw it this way?
Explain why or why not.
The biologist draw the line in this way as The SJC harbor seal sub-population grew exponentially between 1970 and the mid-1990s. After that it reached its carrying capacity.
What is carrying capacity?The typical population size of a species in a given habitat is referred to as carrying capacity.
Environmental elements including sufficient food, shelter, water, and mates are able to control the population number of the species. The population will decline until the resource recovers if these needs are not supplied.
The maximum number of people that a habitat can support in a community is known as carrying capacity. The carrying capacity is restricted by biotic or abiotic variables known as limiting factors.
The SJC harbour seal sub-population increased dramatically between 1970 and the mid-1990s, prompting the biologist to define this boundary. It then reached its limit of carrying.
Thus, scientists drew graph like this.
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Name two organelles from the cell body (the main part of the cell) that are involved in preparing for the release of neurotransmitters.
The two organelles from the cell body that are involved in preparing for the release of neurotransmitters are the endoplasmic reticulum and the Golgi apparatus.
The neuron's cell body contains a nucleolus, nucleus, Golgi apparatus, endoplasmic reticulum, ribosomes, lysosomes, endosomes, mitochondria, and peroxisomes. A vesicle is a tiny sac made of a membrane that contains liquid. This facilitates the movement of materials into or out of the cell.
In neurons, the vesicle helps to transport and store the neurotransmitter. The ribosomes in the rough endoplasmic reticulum are the location where the proteins that make up the vesicles are produced. Vesicle biosynthesis starts once this protein migrates from the smooth ER to the Golgi apparatus. From there, the vesicles will bud off and be transported to the neuron terminal to become neurotransmitter vesicles.
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the diploid number of chromosomes in the cell of a domesticated dog is 78. which of the following options include.___after fertilziaton.
39 chromosomes involve at the cell poles as a result. They decreases from 2n (diploid) to n (haploid). They then go through meiosis II, results in 4 haploid daughter cells, with half several chromosomes as the parent cell.
What is meiosis?A single cell has been splits twice during the meiotic process, leaving four cells with half of its original genetic material. These cells sperm in men and eggs in women are our sex cells.
When DNA is broken, the G2 checkpoint prevents cells from initiating mitosis, giving the chance for healing and limiting the reproduction of damaged cells. Understanding the molecular origins of cancer requires a focus on the G2 checkpoint since it helps to the creation of genomic stability.
Therefore, They then go through meiosis II, results in 4 haploid daughter cells, with half several chromosomes as the parent cell.
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Roger, a police officer, takes Iqbal into custody for questioning just because Iqbal is an Arab American. Roger is of the belief that all members of Iqbal's ethnic community are violent. In this scenario, Roger's actions best illustrates ________.a. ethnic paradoxb. blended identityc. reverse discriminationd. racial profiling
Roger, a police officer, takes Iqbal into custody for questioning just because Iqbal is an Arab American. Roger is of the belief that all members of Iqbal's ethnic community are violent. In this scenario, Roger's actions best illustrates racial profiling.
b. plants of the cabbage family naturally contain goitrogens, which stimulate iodine uptake by the thyroid gland increasing its hormone production.
The statement which is not true of iodine is c)Children with a mild iodine deficiency will have goners and perform poorly in school. So, option C is correct.
Iodine deficiency is an absence of the minor component iodine, a fundamental nutrient in the eating regimen. It might bring about metabolic issues, for example, goiter, once in a while as an endemic goiter as well as inherent iodine lack condition because of untreated intrinsic hypothyroidism, which brings about formative deferrals and other medical issues. Iodine deficiency is a significant worldwide medical problem, particularly for rich and pregnant ladies. It is likewise a preventable reason for scholarly inability.
Iodine is a fundamental dietary mineral for neurodevelopment among youngsters. The thyroid chemicals thyroxine and triiodothyronine contain iodine. In regions where there is little iodine in the eating routine, ordinarily far off inland regions where no marine food varieties are eaten, iodine lack is normal. It is likewise considered normal in rocky locales of the existence where food is filled in iodine-unfortunate soil.
Hence, option C is correct.
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(Complete question) is:
Which of the following statements is NOT true of iodine?
a) lodine is an integral part of thyroid hormone.
b) Plants of the cabbage family naturally contain goitrogens, which stimulate iodine uptake by the thyroid gland, increasing its hormone production
c)Children with a mild iodine deficiency will have goners and perform poorly in school
d) A woman with a severe iodine deficiency during pregnancy may give birth to a child with cretinism, which is characterized by an extreme and irreversible mental impairment and sturned physical growth
based on the second law of thermodynamics, how much biomass of phytoplankton would be needed to produce
In this food chain, 1,000kg are needed to create kg of (kg) of huge fish.
NOTE:The complete question is- 1 kilogram (kg) of large fish in this food web?
How do you calculate phytoplankton?It is common practice to calculate phytoplankton biomass utilizing connections between cell volume, carbon (C), and nitrogen (N) contents which have been established using a variety of plankton that range in size by several orders of magnitude.
Why could zooplankton biomass be higher than that of phytoplankton?Because zooplanktons are lighter and smaller in size than phytoplankton, their biomass is higher that of the latter.In addition, they spend the daytime in the shadows of water bodies and come to the surface at night to graze on phytoplankton.
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At which of the following level(s) can gene expression be regulated in eukaryotes? Check All That Apply initiation of transcription transcript splicing export of mRNA from the nucleus to the cytoplasm stability of the mRNA rate of protein synthesislocalization of the protein to particular cellular location modification of the protein
Gene expression is the process of turning genes on or off. Gene expression can occur at any point of the transcription-translation process but most often occurs at the transcription level.
Gene expression is the process of turning genes on or off. Proteins that can be activated by other cells and signals from the environment are called transcription factors. Transcription factors bind to regulatory regions of the gene and increase or decrease the level of transcription. Other mechanisms of gene regulation include regulating the processing of RNA, the stability of mRNA and the rate of translation.
Turning the correct genes on and off is an essential component to maintaining a cell’s functionality. Only some of a cell's genes are translated and expressed (transcribed) by the cell. By activating or deactivating the expression of the proper genes, cells respond to environmental cues. Gene regulation is the process of turning genes on or off. Gene expression can occur at any point of the transcription-translation process but most often occurs at the transcription level.
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