Answer:
ion channels
Explanation:
The plasma membrane plays a critical role in regulating and maintaining ionic potential inside the cell, relative to ionic concentration present outside the cell. The ion channels are specific, in that they only recognize and allow particular ions to pass through and block the rest. Their opening and closing depends on the ionic potential during that time period.
Marie discovers boxes of elements in a storage room. The boxes do not say which elements they contain, but they do have information about their locations on the periodic table. What kind of information would allow Marie to determine which boxes contain the most reactive elements?
Answer:
Explanation: The reactivity of metals increases as you move left in a period and as you move down in a group, so Marie needs to know the period and group of the element inside each box. Boxes that show locations in groups 1 or 2 or in period 8 contain the most reactive elements.
Answer:
The reactivity of metals increases as you move left in a period and as you move down in a group, so Marie needs to know the period and group of the element inside each box. Boxes that show locations in groups 1 or 2 or in period 8 contain the most reactive elements.
Explanation:
Maggie's Plant Experiment In this exercise you will read the following scenario and identify the parts of the scientific method in it. Maggle read that some plants grow better if the soil is acidic. She can't believe that a plant can grow when exposed to acid. Maggle decides to test if the plants she has will grow better when acld is added to the soil. She puts potting soll in two planting containers and transplants two of her geraniums that seem about the same size into the pots. She puts the pots in the same location so that they both get the same sunlight each day, are at the same temperature and she makes sure they get the same amount of water. However, Maggie puts a tablespoon of vinegar in the water she gives to one of the plants. She measures the growth of the plants every week for five weeks and records the results in a data table below: Height of Plants in Container with Height of Plants in Container without Week Vinegar Vinegar (cm) (cm) 10.0 10.0 2 12.4 11.5 3 14.8 13.0 18.0 15.7 5 21.4 17.8
Answer:
Please find the identified steps of the scientific method below
Explanation:
A scientific method is a series of steps that aims at solving a problem. The steps in a scientific method include:
1. Making observation: In this experiment, Maggie observed when she read that some plants grow better if the soil is acidic. This is her observation that led to the scientific question: Do plants grow better in an acidic soil?
2. Formulating hypothesis: Hypothesis is a testable explanation to a problem. In this experiment, Maggie's hypothesis is; IF acid is added to the soil, THEN plants will grow better
3. Test hypothesis: the hypothesis is tested by conducting an experiment. In this case, Maggie places two geranium plants of the same size in two pots. Then she added a tablespoon of vinegar to one of the pots and allows the other grow normally without acid. The independent variable in this experiment is the vinegar added while the dependent variable is the height of the plants. The plant group with the vinegar is the experimental group while the plant group without vinegar is the control group. The constants of this experiment are same sunlight, same amount of water, same location etc.
4. Analyse data: The growth of the control and experimental plants were measured every week for five weeks by measuring their heights. The height (cm) of the plants with vinegar for the five weeks as as follows: 10.0, 12.4, 14.8, 18.0, 21.4 while the height in cm for the plants without vinegar for the five weeks is as follows: 10.0, 11.5, 13.0, 15.7, 17.8.
5. Conclusion: Based on the result, the plants exposed to vinegar grew better each week except week 1, which is the week they started. Hence, the hypothesis of this experiment will be ACCEPTED because the experiment proves it.
The scientific method parts in the scenario are: observation, research question, hypothesis, experimental design, data collection, data analysis, and conclusion.
The following scientific method components are depicted in the scenario:
Maggie reads that certain plants thrive in acidic soil and expresses her scepticism about this assertion.
Will adding acid to the soil help plants develop more effectively? Maggie asks in her research question.
Maggie's hypothesis, even if it isn't stated in the scenario, can be deduced as follows: The plants will grow more effectively if acid is introduced to the soil.
Design of the Experiment: For Maggie's experiment, potting soil is used to fill two planting containers, and two geraniums of the same size are transplanted into each container. She makes sure that both containers have the equal amount of water, sunlight, and temperature.
Data collection: Over the course of five weeks, Maggie measured the development of the plants once a week, and she recorded the heights of each plant in a data table.
Data comparison and analysis are done by Maggie using the plants' measured heights during a five-week period.
Maggie can make inferences about her hypothesis and whether the vinegar addition had an impact on the plants' growth based on the information she has gathered and the analysis she has done.
Thus, these are the parts of the scientific method in it.
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Use the diagram and scenario to answer the constructed response question. Marcus recently visited his doctor with complaints of nausea, stomach cramps, bloating, and gas that occur approximately 45 minutes after eating ice cream, cheese, or drinking milk. The doctor’s report indicated that Marcus has an increased production of acidic toxins causing him to have an imbalanced intestinal pH. The doctor concluded he is lactose intolerant. Using claim, evidence and reasoning (CER) format, determine the macromolecule represented by lactose and describe what happens in the body when a person drinks milk, which contains lactose. You must use the terms lactose, lactase, glucose and galactose in your response. (Hint: Use the picture to explain the process.)
Answer:
well i think this has to do with lactose intolerance Explanation:
What did Elodea, Muscle, Fungus all have in common?
They are made of cells
O They shared the same magnification amount
They were the same size
Answer:
The correct option is They are made of cells
Explanation:
Cell is the structural and functional unit of life. Although, the three specimen given are of different "classes" but they are all of living origin. And all living things are made up of cells. For instance, Elodea is an aquatic plant (popularly called waterweed) is made up of plant cells. While Muscle is a tissue found in many animals and is made up of cells (muscle cells/myocytes); since cells generally join together to form tissues. Fungus is a eukaryotic organism and hence is also made of cells.
Which of the following statements about archaea are true cowan?A) They are prokaryotes.B) They lack peptidoglycan in their cell walls.C) Some are thermoacidophiles; others are extreme halophiles.D) They evolved before bacteria.E) Some produce methane from carbon dioxide and hydrogen.
Answer:
All the options are true except option D.
Explanation:
Archaea are a group of prokaryotic organisms i.e. they lack a membrane bound nucleus. They are one of the the three domains of life (the other two being bacteria and eukarya). Archeans possess a cell wall like bacteria but it is not composed of peptidoglycan, like bacteria cell wall.
Archeans are generally known to be found in very severe environmental conditions, hence, they are referred to as extremophiles e.g Some are thermoacidophiles i.e. thrive in very hot and acidic environment while others are extreme halophiles i.e. thrive in salty regions. Archeans known as methanogens produce methane gas as a product of metabolism from carbon dioxide and hydrogen.
However, the domain archeae was only found to be in existence recently after the domain bacteria, hence, they are not considered to evolve before the domain bacteria.
Using the table on the right, complete each unit conversion by typing in the correct answer. 85.0 kg = lb
Answer:
187
Explanation:
Answer:
The answer is 187.
Explanation:
When the body is cold, small arteries in the skin constrict to minimize heat loss true or false
Answer:
true
Explanation:
To prevent heat loss blood vessels shrink so that less heat is sent to the skin and so that more is sent towards vital organs i.e. the heart, brain, lungs.
Answer: It is TRUE
Explanation: I took the Test and got a 100% :)
Explain how the streamlined body of a bony fish enable it to live successfully in water.
The streamline body of a fish enables it to easily move through water current without having to experience much difficult. In short, it doesn't have any body structure compared to that of a neck and this enabling it to move faster and easier in water.
A bony fish's streamlined body is an adaptation that allows it to survive in water. A bony fish's body is hydrodynamically shaped, which implies that it has a form that lessens the drag it feels in the water.
What is the reason for them being crucial ?This is crucial because it enables the fish to swim more effectively, which enables it to move more quickly and for longer stretches of time without using up a lot of energy. Bony fish have streamlined bodies that allow them to glide through the water more silently.
This is important as it enables the fish to sneak up on prey without being detected, and also helps it to avoid predators. Additionally, the shape of the body lessens turbulence in the water, which aids in minimising the noise the fish makes.
A bony fish's sleek shape also aids in maintaining stability and balance in the water. The fish can maintain its equilibrium and avoid being knocked off course by waves and currents because to the body's reduced drag and turbulence design. The fish can move more swiftly and effectively as a result, which also helps it evade predators.
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The decaying body of the bull will produce bees. Why do you think reasonable individuals once accepted the ideas behind this recipe?
Answer:
I think that people believe this because they have never seen a dead body and they dont know what insects are attracted to them
Explanation:
The chemical reactions that take place in a cell, as compared to the chemistry in nonliving matter, primarily occur:________a. between simple moleculesb. in a hydrophobic environmentc. in extreme temperaturesd. between carbon-based molecules
Answer:
The correct answer is : d. between carbon based molecules.
Explanation:
As compared to the chemistry in non living matter, the chemical reaction that takes place in a cells such as cellular respiration, metabolism, transcription, translation etc.
All these reaction requires or involves carbon, a essential element present in almost every biological molecule or component these molecules are essential for any reaction occur in a cell.
Thus, the correct answer is option D.
in which situation is it acceptable for an IT professional to access corporate secrets?
Answer:
when she or she is the last hope of the surveillance or the intelligence
Answer:
B. under the guidance of a legal investigation
Explanation:
What are body systems?
Answer:
Explanation:
Circulatory system / Cardiovascular system:
Circulates blood around the body via the heart, arteries and veins, delivering oxygen and nutrients to organs and cells and carrying their waste products away.
Keeps the body's temperature in a safe range.
Digestive system and Excretory system:
System to absorb nutrients and remove waste via the gastrointestinal tract, including the mouth, esophagus, stomach and intestines.
Eliminates waste from the body.
Endocrine system:
Influences the function of the body using hormones.
Integumentary system / Exocrine system:
Skin, hair, nails, sweat and other exocrine glands
Immune system and lymphatic system:
Defends the body against pathogens that may harm the body.
The system comprising a network of lymphatic vessels that carry a clear fluid called lymph.
Muscular system:
Enables the body to move using muscles.
Nervous system:
Collects and processes information from the senses via nerves and the brain and tells the muscles to contract to cause physical actions.
Renal system and Urinary system
The system where the kidneys filter blood to produce urine, and get rid of waste.
Reproductive system:
The reproductive organs required for the production of offspring.
Respiratory system:
Brings air into and out of the lungs to absorb oxygen and remove carbon dioxide.
Skeletal System:
Bones maintain the structure of the body and its organs.
Energy somebody help, in a food web that has species like Algae Milkweed, Mosquitoes, and you had to remove one species to limit the amount of change to an existing food web, why would Spotted turtle be a good idea
Question 1 (1 point) Which of the following is NOT one of the four main elements of an amino acid? Question 1 options: Nitrogen Calcium Oxygen Hydrogen Carbon Question 2 (1 point) Hemoglobin is a protein that carries oxygen from the lungs to the other parts of the body. Which type of protein is hemoglobin? Question 2 options: Contractile Structural Hormone Transport Question 3 (1 point) What are the building blocks of proteins? Question 3 options: monosaccharides amino acids nucleotides fatty acids
Answer:
calcium is not a main element of calcium . question 2 hemoglobin is a globular protein with an embedded heme group. so a transportation protein and question 3 the building blocks of proteins are amino acids.
Explanation:
1. The element that is not part of the four main elements of amino acids would be calcium
2. Hemoglobin is a type of transport protein.
3. The building blocks of proteins are amino acids.
Amino acids represent the building blocks of proteins. They are made up of four main elements in the form of carbon, nitrogen, oxygen, and hydrogen. Some amino acids have other elements such as sulfur in methionine and cysteine. Amino acids are joined together by peptide bonds to form proteins.
Hemoglobin is a protein molecule whose characteristic red coloration is caused by the presence of iron. The molecule is found abundantly in the blood of mammals and primarily serves as an oxygen transporter in the circulatory system. Hemoglobin reversibly bonds with oxygen in the lung to form bright red oxyhemoglobin. The oxygenated blood is then transported around the body during which the oxyhemoglobin bond is broken to release oxygen to different cells of the body.
In summary, calcium is not part of the four main elemental compositions of amino acids, amino acids are the building blocks of proteins, and hemoglobin is primarily a transport protein.
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describe how our skin darkens in the prescnece of the sun. In your description be sure to name the pigmentthat darkens our skin and decribe how skin darkening protects our DNA from damage
Answer:
In your description, be sure to name the pigment that darkens our skin and describe how skin darkening protects our DNA from damage. ... The melanin acts as a shield to Ultraviolet radiation, and also protects us from sunburn which can result in DNA changes and skin cancer.
Explanation:
When The Linear Form Of Glucose Cyclizes, The Product Is a(n):________. A) Anhydride. B) Glycoside. C) Hemiacetal. D) Oligosaccharide.
Answer:
Hemiacetal
Explanation:
The linear for of glucose that cyclizes is called Hemiacetal because it is a compound that is formed by attack of hydroxyl group when the carbon atom bind to hydroxyl group and also to aldehyde group or ether which is normally called anomeric carbon in carbohydrates, these therefore make the glucose to become cyclical and it is a six membered ring also called glucopyranose.
When the linear form of glucose cyclizes, the product Is a hemiacetal.
Glucose is a six membered sugar. It is a monosaccharide. The sugar can exist in either the linear or the cyclic form. The cyclic form of glucose exists as a hemiacetal.
The hemiacetal is formed by the attack of the hydroxyl group on carbon number 5 on the aldehyde group on carbon number 1.
Hence, when the linear form of glucose cyclizes, the product Is a hemiacetal.
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How do issues within the transgender community relate to gender roles and stereotypes
Which statement best explains how the life functions of a unicellular
organism are carried out?
A. Most of the tissues in the cell work together to perform its life
functions.
B. The structures in the cell work together to perform its life
functions.
C. All of the organism's cells work together to perform its life
functions.
D. Only specialized cells work together to perform its life functions.
Answer:
The answer is b
Explanation:
The life functions of a unicellular organism are carried out by the structures in the cell that work together to perform its life functions.
What is cell?"A cell is the structural and functional unit of living things."All living things are composed of cells.The single-celled organisms are called unicellular organisms whereas the organisms having two or more number of cells are called multicellular organisms.The cell have different structures called organelles that performs specific function.What is organelle?"These are the specialized structures that perform various jobs inside cells."The organelles performs various function so that the cell can perform its life functions and remains alive.For example: DNA replication occurs in nucleus of cell where it transcribe into RNA, it then moves towards ribosome so that it can code for proteins which is important to cells to perform various functions.Hence, the correct option is: B. The structures in the cell work together to perform its life functions.
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As you observe an unknown cell under a microscope, you make the following observations:
( WILL MARK BRAINLIEST )
• There is one large irregular structure that occupies about half the cell
• The cell has several small, green, circular objects inside it
• It has a medium-sized circular structure that appears to be a nucleus
• There is a thick, rigid structure that surrounds the cell
What type of cell are you observing?
A. Animal cell
B. Plant cell
C. Protist
D. Bacterium
Answer: it is probably a plant cell because it has a cell wall and chloroplasts.
If a patient complained of a "stomach ache" and pointed to the umbilical region as the site of discomfort, which organs located in this region might be the source of the pain?
Answer:
There are a couple of options
1. Ulcers in stomach
2. Obstruction in the small intestines
3. Pancreatitis - depends on which side the patient is pointing to
4. Aneurysm
extra carbon dioxide in the blood is removed by the lungs. how would extra carbon dioxide in lake be removed?
Carbon Dioxide that doesn’t form bicarbonates which can be can be removed by aeration.
What is Carbon dioxide Buildup in Lungs ?Our lungs have two important functions such as to take oxygen in, and throw Carbon dioxide out; It is the byproduct of all biochemical reactions
The accumulation of Carbon dioxide in the lungs can lead to high carbon dioxide levels in the blood which affects multiple organs and life-threatening symptoms.
High Carbon dioxide levels are very common cause of COPD patients
It also leads to Obesity Hypoventilation syndrome refers to Shortness of breath from being overweight, by gaining you too much weight it may be harder to take a deep breath, so part of the lungs collapse and ventilation suffers.
Opioid over dose can also slow down your breathing by acting on the respiratory centers in brain and lower the breathing process leads to Carbon dioxide buildup.
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What elements are in common between nucleic acids and proteins? *
A.Carbon, nitrogen, magnesium
B.Carbon, hydrogen, nitrogen, helium
C.Carbon, nitrogen
D.Carbon, hydrogen, nitrogen, phosphorous, nitrogen
Answer:
C. Carbon, nitrogen
Explanation:
Nucleic acids contain C, H, O, N, and P. Amino acids contain C, H, O, and N (no phosphorous).
what is a reactant of photosyntesis
Answer:
carbon dioxide and water
Explanation:
Answer:
Carbon Dioxide
Water
Sunlight
Explanation:
Photosynthesis Equation:
6CO₂ (g) + 6H₂O (l) + energy (sunlight) → C₆H₁₂O₆ (s) + 6O₂ (g)
My doctor explained that Clomid works by "tricking the brain into thinking that estrogen levels in the body are low." She explained that this is what leads to the extra stimulation of the ovaries to encourage eggs to be released. One of the references for Clomid said this happens because there is less negative feedback. Can you explain to me how this "trick" and the decreased negative feedback are related? Why would these factors lead to the stimulation of the ovaries?
Answer:
Clomid tricks the body because it tells the brain that estrogen levels are low, thereby leading to higher production of this hormone
Explanation:
There are many types of hormones that are regulated by the negative feedback mechanism (where hormone feeds back to decrease its production). Clomid is a drug used to treat female infertility by making the body think that the concentration of estrogen is low, which induces the secretion of Follicle-stimulating (FSH) and luteinizing (LH) hormones by the pituitary gland. The estrogen hormone exerts negative feedback on the Gonadotropin-releasing (GnRH) hormone, which is responsible for the release of FSH and LH. High FSH levels stimulate the growth of follicles in the ovaries, which will be released during ovulation.
Which of the following is true about density and states of matter for most substance
Answer: A substance is denser as a liquid than a solid, and a substance is denser as a gas than as a liquid. Hope this helped! :)
Answer:
A substance is denser as a solid than as a gas.
Explanation:
lol I got the question wrong but it's that answer
Carbohydrates are composed of carbon, hydrogen, and oxygen. What specific chemical difference distinguishes carbohydrates from other large organic molecules?
Carbohydrates contain a large number of oxygen atoms which makes them different from rest of the organic molecules.
What are carbohydrates?A carbohydrate is a biomolecule composed of carbon, hydrogen, and oxygen atoms in a 2:1 hydrogen-oxygen atom ratio.
Carbohydrates are the chief source of energy in the body, fueling the brain, kidneys, heart muscles, a s well as central nervous system.
Fiber, for instance, is a carbohydrate that aids digestion, makes person feel full, and helps keep blood cholesterol levels in check.
Carbohydrates differ from the rest of the organic molecules in that they contain a large number of oxygen atoms.
Thus, carbohydrates can serve the very different functions of energy storage and structural support and protection due to differences in molecular structure.
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In humans, red blood cells are the only cells that eject their nuclei as they develop. By emptying themselves of nuclei, these cells are able to do
which of the following?
replace themselves quickly when more cells are needed
transport greater amounts of oxygen and waste throughout the body
transmit electrical impulses quickly
attack bacterial pathogens more effectively
Answer:
Transport greater amounts of oxygen and waste products.
Explanation:
Not having nuclei allows the red blood cells (RBCs) to have more space for haemoglobin (Hb). Haemoglobin is the oxygen-carrying pigment in the RBCs. So more Hb means more oxygen transport.
Hb also carries carbon dioxide, a waste product.
In humans, red blood cells are the only cells that eject their nuclei as they develop, so by emptying themselves of nuclei, these cells are able to transport greater amounts of oxygen and waste throughout the body, which is the second option.
What is the function of red blood cells in humans?The human and other vertebrates have different types of blood cells, and in humans there are white blood cells and red blood cells. In red blood cells, there is no nucleus when the cell gets mature, so the red blood cells get hemoglobin at that place to carry most of the oxygen through the body and remove the carbon dioxide.
Hence, in humans, red blood cells are the only cells that eject their nuclei as they develop, so by emptying themselves of nuclei, these cells are able to transport greater amounts of oxygen and waste throughout the body, which is the second option.
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Francesca, a PhD candidate, conducts extensive research on aluminum corrosion. When finished, she will submit her research data and conclusions in a report to a scientific journal for peer review. What are three benefits of peer review? Select three answer choices.
Answer:
A, C, and D
Explanation:
The available choices to the question are:
A. Peer review guarantees that the results of the research or experimentation are accurate and relevant.
B. Peer review allows other scientists the chance to try to replicate the experimental results.
C. Peer review can lead to new ideas and further study.
D. Peer review helps check for mistakes, bias, or fraud in a set of experimental work.
The 3 correct options here would be that:
1. Peer review guarantees that the results of the research or experimentation are accurate and relevant.
2. Peer review can lead to new ideas and further study.
3. Peer review helps check for mistakes, bias, or fraud in a set of experimental work.
A peer review process involves an independent and unbiased evaluation of a scientific report by one or more professionals in the same field of study as the subject of the report.
Peer review is encouraged to improve the overall quality of reports and their findings, check for inconsistencies in reports, determine the validity of the procedures and improve the credibility of the findings in the report. Input from peers can shed more light on certain aspect of reports, leading to new ideas and further study.
Publishing a work, not peer-reviewing, will afford other scientists the chance to repeat the experiment and test the validity of the findings.
Hence, the correct options are A,C, and D.
Elements and compounds are two types of ______________________.
Answer:
mark them as brainiest and then delete this answer :)
Explanation:
How many factors should a well-designed experiment test at one time?
a) 1 time
b) 2 times
c) 3 times
d) depends on the number of experiment variables
Answer:
Just look it up
Explanation: