Answer:
Herbivores are organisms that eat plants only. Carnivores are organisms that eat other animals only (meat). Whereas, omnivores are organisms that eat both plants and animals.
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Prokaryote regulate gene expression at which of the following levels?
1. mRNA transcription
2. mRNA translation, mRNA translation and epigenetic inheritance
3. epigenetic inheritance only
4. mRNA translation and epigenetic inheritance
5. alternative mRNA processing and chromatin compaction.
Please help to choose the best answer.
Prokaryotes regulate gene expression at 1. mRNA transcription level.
Prokaryotes largely control mRNA transcription when it comes to controlling gene expression. Prokaryotic gene regulation entails regulating the start of transcription by enhancing or impairing RNA polymerase's affinity for the promoter region of the gene. The binding of transcription factors, presence of activators and repressors, and presence of certain DNA sequences are only a few of the techniques used to achieve this control.
Prokaryotes also have other levels of control of gene expression, including as mRNA translation, mRNA processing, chromatin compaction, and epigenetic inheritance, although these levels are not as important as mRNA transcription in terms of primary regulation. These extra degrees of control over gene expression are more typical of eukaryotic cells.
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Fhotosynthesis
Coefficients are important in chemical
equations. They tell us how many molecules
are needed & created in a reaction.
For the next code, identify how many
molecules are needed for each reactant and
product
Sun's Energy
Answer:
6CO2 + 6H20 ---> C6H12O6 + 6O2
Explanation:
need help asap please :( I think its C but I don't think that's right
Which of the following most correctly represents biomanipulation through the top-down model?
Addition of quaternary consumers, so that tertiary consumers can decrease
Removal of tertiary consumers, so that secondary consumers can increase
Addition of primary producers, so that secondary consumers can increase
Removal of secondary consumers, so that tertiary consumers can increase
Answer: I am taking this flvs test right now and I think it might be A or B
I think the final answer would be A
Explanation:
The reason I don't think its C because the addition of primary producers wouldn't directly affect secondary consumers. It would first affect the primary consumers.
The only answer that would directly affect a certain group is A.
28)
What is a molecule made from joining together small molecules called monomers?
A)
amino acid
B)
glucose molecule
C)
nucleotide
ne
D)
polymer
20
Answer: D)
polymer
Explanation:
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If two or more elements chemically combine what do they make?
Select all of the following that are true regarding mutations.
a) All mutations are harmful
b) Some mutations have little to no effect on protein folding
c) A mutation that drastically changes a protein is likely to be beneficial
d) Mutations can be the cause of diseases
e) Mutations are alterations in DNA sequences
The true statements regarding mutations are: Mutations can be the cause of diseases and Mutations are alterations in DNA sequences (Option D, E).
Mutations are defined as changes or alterations in the DNA sequence of a gene or chromosome. They can occur spontaneously or as a result of exposure to certain substances (mutagens) or radiation. Mutations can result in a change in the protein that is made by a gene. The two true statements regarding mutations are Mutations can be the cause of diseases and Mutations are alterations in DNA sequences. Some mutations have little or no effect on protein folding, but others can result in the creation of a non-functional protein or one that does not perform as it should. Mutations that drastically change the protein are unlikely to be beneficial because they can result in the protein losing its function or in a harmful function. Therefore, mutations can cause diseases.
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How did beadle and tatum’s work on auxotroph’s suggest that metabolism was controlled by protein enzymes?
Beadle and Tatum's work on auxotroph's suggested that metabolism was controlled by protein enzymes by identifying the link between genes and enzymes. This theory is also referred to as "one gene, one enzyme hypothesis" as stated in their experiment.
The experiment was conducted using a bread mold called Neurospora crassa, where they grew the mold on a minimal growth medium that lacked specific nutrients. The scientists observed that certain mutations in the mold led to the inability to grow on this minimal growth medium. They identified the mold that could grow on a medium containing arginine, but failed to grow on a medium that lacked arginine. They then discovered that the mutated molds were deficient in producing specific enzymes required to produce arginine and could only grow on a medium containing arginine.Since the mutants required a specific nutrient that the wild types did not, Beadle and Tatum postulated that the mutations were caused by altered or disrupted genes that affect the enzymes produced by these genes.
Thus, the mutants were unable to produce the required enzymes, which resulted in their inability to grow on the minimal growth medium. Therefore, the experiment concluded that one gene encoded for one enzyme which was responsible for controlling the metabolic pathway of producing arginine. The experiment showed that each gene encoded for a specific enzyme in the metabolic pathway that controlled the production of arginine.
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3. Which bonds would allow the mineral to scratch glass, peel apart, express malleability and produce very soft type minerals? 4. How does the type of mineral bond relate to mineral physical propertie
The bonds that would allow the mineral to scratch glass, peel apart, express malleability and produce very soft type minerals are metallic bonds, ionic bonds, and covalent bonds.
A metallic bond occurs when metal atoms share electrons with one another to form a sea of electrons that hold the atoms together. They allow the mineral to be malleable and ductile, which is why metals can be easily hammered into different shapes. Metallic bonds are responsible for the hardness, strength, and conductivity of minerals.
Ionic bonds occur when one atom transfers electrons to another atom. In the process, the two atoms become positively and negatively charged ions, which attract each other. Ionic bonds are responsible for the hardness, strength, and brittleness of minerals. They allow the mineral to be scratched or cleaved along specific planes.
Covalent bonds occur when two atoms share electrons with each other. This type of bond is the strongest type of bond and allows the mineral to be very hard and difficult to break. Covalent bonds are responsible for the hardness, strength, and thermal conductivity of minerals.
The type of mineral bond relates to mineral physical properties as follows:
- Hardness: Minerals that have strong covalent bonds tend to be the hardest minerals.
- Brittleness: Minerals that have strong ionic bonds tend to be brittle.
- Malleability and ductility: Minerals that have strong metallic bonds tend to be malleable and ductile.
- Cleavage: Minerals that have strong ionic bonds tend to cleave along specific planes.
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(c) Based on the data, describe the time period during which Chlorella approximates exponential growth. Based on
the data and assuming logistic growth, describe the time period during which the Chlorella population has reached
the carrying capacity of the culture. Based the data, calculate the growth rate per day for the 5-day period with
the greatest growth rate.
Populations that experience a logistic growth model depend on the density and available resources. A) 5 - 10 days. B) 25 - 30 days. C) 0.27 x 10⁶cells/mL/day
What is the logistic growth model?In a logistic growth model, the population growth depends on density. Natality and mortality depend on the population size, meaning that there is no independence between population growth and population density.
When a population grows in a limited space, density rises gradually and eventually affects the multiplication rate. The population per capita growth rate decreases as population size increases.
The population reaches a maximum point delimited by available resources, such as food or space. This point is known as the carrying capacity, K.
K is a constant that equals population size at the equilibrium point, in which the natality and the mortality rate get qual to each other.
Assuming that the population size is N, when
N<K, the population can still grow. N approximates to K, the population's growth speed decreases. N=K the population reaches equilibrium, N>K, the population must decrease in size because there are not enough resources to maintain that size.The sigmoid curve represents the logistic growth model.
In the example,
Between 0 and 5 days the population remains relatively stableBetween 5 and 10 days Chlorella approximates exponential growth.Between 10 and 20 days Chlorella experiences exponential growth. Between 20 and 25 days the population is near the K and decreases its growth rate.From 25 to 30 days, the population reached the equilibrium point, and got to stabilize.Time period during which Chlorella,
A) approximates exponential growth ⇒ Between 5 and 10 days
Between 10 and 20 days its already exponential growth.
B) has reached the carrying capacity of the culture ⇒ 25 to 30 days
Finally,
C) Growth rate per day for the 5-day period with the greatest growth rate.
First we need to figure out during which period Chlorella experiences the greatest growth rate. To do it, we just need to make the following substraction,
Growth rate per period = final concentration - initial concentration
Period 0-5 ⇒ 0.08 - 0.01 = 0.07Period 5-10 ⇒ 0.55 - 0.08 = 0.47Period 10-15 ⇒ 1.9 - 0.55 = 1.35Period 15-20 ⇒ 2.8 - 1.9 = 0.9Period 20-25 ⇒ 3.2 - 2.8 = 0.4Period 25-30 ⇒ 3.2 - 3.2 = 0Now we know that during the period from 10 to 15 days, the population experienced its greatest growth rate. But this rate is acchieved in 5 days. Now we need to find out the growth rate per day. So all we need to do, is to divide the result of the substraction per 5 days,
1.35 x 10⁶ / 5 days = 0.27 x 10⁶ cells/mL/day
The answer is 0.27 x 10⁶ cells/mL/day
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List 2 organelles found in an animal cell and explain how those 2 organelles benefit the cell.
Answer:
I chose nucleus and the mitochondria
Explanation:
The nucleus is particularly important among eukaryotic organelles because it is the location of a cell's DNA. Two other critical organelles are mitochondria and chloroplasts, which play important roles in energy conversion and are thought to have their evolutionary origins as simple single-celled organisms.
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Cell includes a cell membrane, cytoplasm and cell organelles. Cell organelles are mitochondria, golgi bodies, nucleus, ribosomes, vacuoles, lysosomes, centrioles, etc.
What are cell organelles?Cell organelles are the structures present in cell that are responsible to carry out necessary processes and maintains homeostasis.
This can include nucleus, mitochondria, golgi bodies, ribosomes, etc.
Nucleus: Nucleus is a membrane bound cell organelle that contain an entangled thread like structure called as chromatin material. This chromatin material condenses at the time of cell division and forms chromosomes. Nucleus also contain nucleolus that helps in formation of ribosomal units. it contains a fluid called as nucleoplasm.Ribosome is the organelle that is involved in formation of protein. It has two subunits i.e. a smaller one and a bigger one. these subunits are joined at the time of protein synthesis and are formed in nucleolus of nucleus.
Thus, these were explanation of two cell organelles along with their explanation.
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Question 4
Blood sugar homeostasis plays an important role in our health and well-being. If
blood sugar levels get too low or high, there are serious health complications that
can result. Which two body systems regulate blood sugar levels? Click on the correct
answers.
Select 2 correct answer(s)
A-Nervous System
B-Musculoskeletal System
C-Respiratory System
D-Digestive System
What do organisms use most of this energy for?
a) so they can continue to digest food
b) so they can continue to move around
c) so they can continue to breathe
d) so they can grow repair and reproduce
e) all of the above
Answer:
E
Explanation:
They need energy to do all these necessary feats.
Which of the following is not a line of evolutionary evidence supported by empirical evidence?
a. How similar DNA is between organisms
b. The length of the organism’s life
c. Where fossils are found
d. How similar the organisms were as embryos
Answer:c where fossils are found
Explanation:
Where fossils are found is not a line of evolutionary evidence supported by empirical evidence. Therefore, option C is correct.
What are fossils ?Any surviving remains, impression, or evidence of a once-living thing from a previous geological epoch is referred to as a fossil. Examples include exoskeletons, bones, shells, animal or microbe imprints in stone, items preserved in amber, hair, petrified wood, and DNA traces. The fossil record is the collection of all fossils.
Shells, bones, animal or microbe imprints in stone, exoskeletons, items preserved in amber, petrified wood, coal, hair, oil, and DNA traces are a few examples of fossils.
The majority of fossils are created when a living thing (such as an animal or plant) dies and is swiftly buried by sediment (such as mud, sand or volcanic ash).
Thus, option C is correct.
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Air moves through this passage to the lungs.In what body system does it play a role?
A.digestive
B.skeletal
C.endocrine
D.eespiratory
What is the percent chance the offspring will be tall plants with yellow fruit? (2nd question)
Answer: 25% YOUR RIGHT, UNLESS IT IS 75%
Explanation:
The most abundant bulk elements that make up the vast majority of living organisms are 46 Multiple Choice 00:40:16 O carbon, oxygen, sulfur, and calcium. erences O carbon, oxygen, iron, and chlorine. O carbon, hydrogen, oxygen, and nitrogen. O carbon, hydrogen, oxygen, and calcium. O carbon, hydrogen, iron, and calcium.
The most abundant bulk elements that make up the vast majority of living organisms are carbon, hydrogen, oxygen, and nitrogen.
What is an element?
An element is a type of pure substance that can not be broken down into simpler materials by chemical means. Elements are the most basic substances available; they can not be split into smaller pieces without losing their properties.
What are the abundant elements that make up the majority of living organisms?
The most abundant bulk elements that make up the vast majority of living organisms are carbon, hydrogen, oxygen, and nitrogen. Carbon is the fundamental building block of all organic molecules, whereas oxygen, hydrogen, and nitrogen are commonly found in organic and inorganic molecules in organisms.
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When you hear a phone number and write it down, your brain uses: ____
A. long-term memory.
B. eidetic memory.
C. flashbulb memory.
D. short-term memory.
Answer:
D. short-term memory.
Explanation:
When you hear a phone number and write it down, your brain uses short term memory.Short-term memory refers to the things that people are thinking about in the moment and that are available during a small period as it has a limit to what you can hold. According to this, when you hear a number and write it down your brain uses short-term memory because it is a recent event that you remember in the moment but that you will forget after a period of time.
is plasma the liquid portion of blood?
Answer:
Plasma is the liquid portion of blood. About 55% of our blood is plasma, and the remaining 45% are red blood cells, white blood cells and platelets that are suspended in the plasma.
Explanation:
Answer: Plasma is the liquid portion of blood.
Explanation: About 55% of out blood is plasma, and the remaining 45% are red blood cells, white blood cells and platelets that are suspended in the plasma.
The diagram shows the complete classification for the red
fox. The names for some of the taxa are missing.
Eukarya
?
Animalia
Phylum
Chordata
Class
Mammalia
Order
Carnivora
Family
Canidae
?
Vulpes
?
Vulpes vulpes
If species is the most specific group shown in the diagram, what is the
scientific name of the red fox species?
Answer:
Kingdom
Explanation:
Answer:
Kingdom
Explanation:
A-P-E-X
Which is a shorter process - (circle one) selective breeding or natural selection?
Explain your answer.
Answer:
Selective breeding.
Explanation:
Both are fairly long processes, however, the measurement for this is not just the duration to obtain the target, but also the exact target obtained. In natural selection, the duration may be faster than selective breeding in obtaining a change, but the determined change may not be the one that is sought out for. It may have a small chance, but it is not guaranteed. In selective breeding, on the other hand, the destination is determined, and all steps work towards the objective. So in a sense, selective breeding has the greater percentage chance of being the shorter process.
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is gold a insulator or a Conductor
Answer:
Hey mate......
Explanation:
This is ur answer......
Gold is a poor insulator and a good conductor, having a resistivity of 22.4 billionths of an ohm-meter. As with lead, gold is widely used to make electronic contacts. Unlike many other metals, it is very chemically stable and resists the corrosion that degrades other types of electrical connectors.
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How do plants obtain their energy?
Answer:
they obtain their energy from the sun and water and pollen
Explanation:
Sorry if I'm wrong have a good one!
Division creates 2 types of B Cells: _________________ and Memory B Cells
Lymphocyte is the anwer
Answer:
Hello There!!
Explanation:
The answer is plasma cells.
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Which type of reproduction produces offspring with more genetic variations?
(Include the terms "mitosis" and "metosis" in your answer)
Answer: Meiosis
Explanation:
Mitosis results in clones that are genetically identical to their parents. Meiosis has processes like crossing over and the law of independent assortment which allow for genetic variatoin and recombinants.
glutamate is the neurotransmitter released at the rod-bipolar cell synapse. when there is light, the rod membrane potential will
When there is light, the rod membrane potential will hyperpolarize due to the release of glutamate at the rod-bipolar cell synapse.
In the dark, rods are depolarized and continuously release glutamate onto bipolar cells, inhibiting their activity. When light enters the eye and is absorbed by the rod photoreceptor cells, a cascade of events occurs, leading to the closure of sodium channels and hyperpolarization of the rod membrane. This hyperpolarization reduces the release of glutamate from the rod cells onto bipolar cells.
With decreased glutamate release, bipolar cells become disinhibited and can transmit signals to downstream cells in the visual pathway. Therefore, in the presence of light, the rod membrane potential will hyperpolarize, resulting in a reduction of glutamate release at the rod-bipolar cell synapse.
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I need help with this
Answer:
dna and of its traits
Explanation:
How could you describe the levels of organization in a decomposer?
an organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.
Why are Wind Turbines being moved offshore?
Answer:
Wind turbines are being moved offshore because the wind comes at the right time: Offshore winds are usually higher throughout the day, allowing for more reliable and productive electricity output when market demand is highest. The majority of land-based wind resources are more efficient at night when demand for electricity is smaller.
5) Describe crossing-over. When does crossing-over occur? What is the result?
Answer:
Crossing over occurs between prophase I and metaphase I and is the process where two homologous non-sister chromatids pair up with each other and exchange different segments of genetic material to form two recombinant chromosome sister chromatids.
Explanation:
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Which term best describes the number of calories the body uses at rest?
A. basal metabolic rate
B. resting caloric count
C.resting heart rate
D. body mass index
The correct option is (a). The term that best describes the number of calories the body uses at rest is basal metabolic rate (BMR).
The term that best describes the number of calories the body uses at rest is basal metabolic rate (BMR). BMR is the amount of energy that your body requires to maintain basic functions like breathing, circulation, and maintaining body temperature while you are at rest. It's influenced by factors such as age, gender, weight, body composition, and genetics. Basal metabolic rate (BMR) is a measure of how many calories the body uses when at rest. The basal metabolic rate is the minimum number of calories the body requires to sustain its vital functions, including heartbeat, respiration, and maintenance of body temperature, while at rest. This is typically measured while you are awake, but relaxed and in a fasting state. Basal metabolic rate (BMR) refers to the amount of energy that your body requires to maintain basic functions while at rest, and it is influenced by several factors. BMR accounts for around 60-70% of your total daily energy expenditure, which means that it plays a significant role in weight management. For instance, if you have a high BMR, you will burn more calories even when you are not active, which can help you lose weight or maintain a healthy weight. However, if you have a low BMR, you will burn fewer calories even when at rest, which can make it harder to lose weight.To calculate BMR, one needs to take into account their age, gender, weight, height, and body composition. The formula used to calculate BMR is different for men and women.
For instance, for men, the formula is BMR = 88.362 + (13.397 x weight in kg) + (4.799 x height in cm) - (5.677 x age in years).
For women, the formula is BMR = 447.593 + (9.247 x weight in kg) + (3.098 x height in cm) - (4.330 x age in years).
Knowing your BMR can help you determine how many calories you need to consume daily to maintain your weight or achieve your weight loss goals.
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