Answers
Related Questions
Why do genetically different cells form during meiosis?
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Answer: meiosis creates new combinations of genetic material in each of the four daughter cells. These new combinations result from the exchange of DNA between paired chromosomes. Such exchange means that the gametes produced through meiosis exhibit an amazing range of genetic variation.
Explanation:
Which of the following statements is correct? *
Protons are found in the nucleus of an atom
Neutrons are negatively charged
Protons are negatively charged
Electrons are found in the nucleus of an atom
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The functions of carbohydrates do NOT include:
a
catalyzing reactions
b
structural materials
C с
source of energy
d
glycogen stores
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Biological catalysts are generally proteins (and a group of RNA molecules called ribozymes), but carbohydrates do not play such a role.
The function of the carbohydrates do NOT include option A. catalyzing reactions
What are carbohydrates?
It is considered to be sugar molecules. Along with fats and proteins, carbohydrates should represent the three important nutrients that should be found in food and drinks. Glucose or blood sugar represents the source of energy.
It functions include structural materials, stores of glycogen, and sources of energy.
Therefore, the correct option is a.
Learn more about carbohydrates here: https://brainly.com/question/17812072
3. Which structure is specific to eukaryotic cells?
O nucleus
O cytoplasm
DNA
O cell membrane
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Like a prokaryotic cell, a eukaryotic cell has a plasma membrane, cytoplasm, and ribosomes. However, unlike prokaryotic cells, eukaryotic cells have: a membrane-bound nucleus. numerous membrane-bound organelles (including the endoplasmic reticulum, Golgi apparatus, chloroplasts, and mitochondria)
What process allows Na+ and K+ to move in and out of the cell simultaneously?
ANSWERS:
A.Simple Diffusion
B.Facilitated Diffusion
C.Active Transport
D.Osmosis
Answers
Answer:
The correct answer is: C. Active Transport.
Explanation:
Because Na+ and K+ are ions, which makes them charged molecules, they can only diffuse through the cell membrane when using specialized protein channels. This is called facilitated diffusion and is a form of passive transport because sodium and potassium move following their gradients, which are made of the difference in concentration between the inside of the cell and the outside of the cell. For example, potassium is highly concentrated inside the cell and poorly concentrated outside the cell, so potassium diffuses from the inside to the outside to even the concentrations.
But the question asks in which process Na+ and K+ move in and out of the cell SIMULTANEOUSLY, so the answer is actually active transport. Active transport is the opposite of passive transport. While passive transport occurs naturally and doesn't need ATP (energy) to happen, active transport needs ATP because it moves molecules AGAINST their gradient. One of the most famous and important structures involved in active transport is the Na+/K+ pump, which consists of a specialized protein using energy to enter 2 potassium ions and take out 3 sodium ions at the same time. This Na+/K+ is fundamental to maintain the gradients, which are important for the correct functioning of many cells.
Six white-tailed deer and six sika deer were enclosed in a pasture for observation during an eight-year study in central Texas. White-tailed deer are a native species to central Texas, while
sika deer are a nonnative species to central Texas. White-tailed deer feed on flowering plants and the tips of trees and shrubs but do not eat grass. Sika deer feed on flowering plants, the
tips of trees and shrubs, and grass. All other grazing animals were kept out of the pasture during the study. The number of sika deer more than doubled after the eight years, while the
population of white-tailed deer decreased by 50 percent.
Which of the following statements best supports the results from the study?
A
The sika deer are generalists, while the white-tailed deer are specialists.
B
The sika deer out competed the white-tailed deer in consuming flowering plants and shrubs.
с
Parasites infected the sika deer population but did not infect the white-tailed deer population
D
Change in the local climate reduced the availability of food resources for the white-tailed deer population
Kiki
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B. The sika deer out competed the white-tailed deer in consuming flowering plants and shrubs.
two poverty alleviation programmes
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Answer:
wage employment programmes
food security programmes
The process of making proteins is called
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Answer:
translation
Explanation:
Answer:
Translation
Explanation:
What do water molecules do when water is a solid?
-They grow bigger and stick together.
-They lose a hydrogen atom.
-They line up and hardly move.
-They join with air molecules.
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Answer: they grow bigger and stick together
Explanation:
HEEELLLLPPPPPPP!!!!!!
In which way are photosynthesis and cellular respiration different?
A) Cellular respiration releases ADP, while photosynthesis releases ATP.
B) Cellular respiration produces oxygen, while photosynthesis uses oxygen.
C) Photosynthesis releases light energy, while cellular respiration stores chemical energy.
D) Photosynthesis uses light energy, while cellular respiration uses chemical energy.
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Answer:
The answer is D Photosynthesis uses light energy, while cellular respiration uses chemical energy.
Explanation:
Explain how mutated DNA would produce proteins responsible for sickle cells rather than producing proteins responsible for normal red blood cells
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Answer:
Explanation:
Sickle cell anemia is a result of the point mutation, and in a change in just one nucleotide in a gene for hemoglobin. This mutation will cause the hemoglobin in the red blood cells to distort to a sickle shape when deoxygenated. "The sickle-shaped blood cells clog in the capillaries, cutting off circulation."
How are luminosity and magnitude related?
(In your own words)
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Answer:
Luminosity is an intrinsic(natural) measurable property of a star independent of distance. The concept of magnitude, on the other hand, incorporates distance. The apparent magnitude is a measure of the diminishing(decrease) flux of light as a result of distance according to the inverse-square law.
Which statements could be categorized in the "Asexual" section of the Venn diagram? Check all that apply
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Answer:
The right answer are : mitosis, diploid cells, and identical DNA.
Explanation:
The answers "two cell divisions" and "gametes" refers to a division by meiosis which is a sexual reproduction.
Asexual reproduction or asexual reproduction is a mode of reproduction, which - as opposed to sexual reproduction - corresponds to the capacity of living organisms to multiply alone, without a partner, without involving the fusion of two gametes of opposite sexes. Asexual reproduction is observed in multicellular (animal and plant) and unicellular organisms. In botany, the term often used for the asexual multiplication of plants is vegetative multiplication. In all cases of asexual reproduction, the result is identical to the mother.
what way does the glucose go?
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Answer:
The stomach and small intestines absorb the glucose and then release it into the bloodstream. Once in the bloodstream, glucose can be used immediately for energy or stored in our bodies, to be used later
Which reason best explains why dead specimens must be used with transmission electron microscopes?
A.) Electrons pass over the specimen.
B.) The lights that are used are harmful to the specimens.
C.) Specimens are placed in a vacuum.
D.) The image that is produced is two dimensional.
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Answer:
C. Specimens are placed in a vacuum
Answer:
C. Specimens are placed in a vacuum
Explanation:
Since transmission electron microscopes must be used in a vacuum the specimen cannot be living. In a vacuum, there is no oxygen so nothing could survive it.
Examine the following list of questions.
1. Why are kids afraid of ghosts?
2. Should I feed the raccoons that visit my trash can?
3. How does mouse color affect mouse survival?
4. Does a mother duck love her babies?
Which statement correctly identifies the scientific question and describes why the question is scientific?
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Answer:
I think it is 3
Explanation:
The other questions can be explained as an opinion but 3 can be studied and it can be experimented.
Help PLEASE!!!!!!
Just as energy flows through an ecosystem, matter also moves from organism to organism and from organisms to the environment. Using either a kelp forest or a hydrothermal vent ecosystem as an example, explain how carbon can move through the organisms
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Answer:
The seaweed in the Kelp forest goes through photosynthesis, takes in carbon, other organisms eat the seaweed and take in the carbon.
Why is the cycling of matter vital to the success of an ecosystem?
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Answer:
This is essential because all organisms depend on one another and is vital for the survival of living organisms. These organisms are linked by the flow of nutrients which is engineered by the nutrient cycles.
What elevated,flat-topped landforms are shown in the above picture
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Answer:
there's not a picture I cant see it
Answer:
the answer is plateaus.
What would be the independent variable in the scenario... Will tap water
with salt added boil faster than plain tap water?
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Answer:
salt
Explanation:
bc the water depends on the salt to change i think
An honest mistake ___.
A. Occurs when laws are deliberately broken.
B. Happens on accident.
C. Happens on purpose.
D. Is against the law.
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Answer:
B. happens on accident
Explanation:
it is not A. because "deliberately" means that the intention of the action(s) was to break the law not just make a mistake.
It is not C. because its the exact opposite of a mistake.
It is not D. because you typically don't break the law with an honest mistake, maybe if you didn't see the speed sign so you go over the limit or something but those occasions are far and in between.
May I have a brainliest?
How do scientists exploit the plasmids in bacteria?
A) They multiply the cells.
B)They use them as vectors.
C)They express plasmids.
D)They nullify their effects.
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Answer:
C
Explanation:
Primers can be exploited for sequence verification of plasmids
Answer: B: They use them as Vectors.
Explanation:
I took the test.
The Big Bang Theory is an example of which kind of theory of creation of the
universe?
Expansion
Steady State
Unchanging
Moving
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How do ocean currents affect the paths of hurricanes?
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“As long as the base of this weather system remains over warm water and its top is not sheared apart by high-altitude winds, it will strengthen and grow.”
Which process connects glycolysis and the citric acid cycle?
lactic acid formation
acetyl CoA formation
electron transport
Krebs cycle
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The process which connects glycolysis and the citric acid cycle is acetyl CoA formation.
GlycolysisGlycolysis is the reaction pathway busy which a glucose molecule is converted to two pyruvate molecules with the production of two net ATP molecules.
Citric acid cycleThis is a cyclic reaction pathway in which a mole of acetyl CoA is oxidized to two molecules of carbon (iv) oxide with the production of the reducing equivalents NADH and FADH2 as well as two ATP molecules.
Acetyl CoA formationThe pyruvate from glycolysis is oxidized to an acetyl CoA molecule by the pyruvate dehydrogenase complex. The acetyl CoA produced then enters the citric acid cycle.
Therefore, the process which connects glycolysis and the citric acid cycle is acetyl CoA formation.
Learn more about glycolysis, citric acid cycle and acetyl CoA at: https://brainly.com/question/11125539
Answer:
It's B
Explanation:
I took one for the team.
If PCBs escaped into the river in large amounts and entered the lower levels
of the food chain, what would be the likely outcome?
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Answer:
Over time, PCBs would collect in top predators such as salmon, making them unsafe for human consumption.
Explanation:
PCBs last a long time in the environment before breaking down and may find their way into the food chain. Low levels of PCBs can be found in fish, shellfish, meat, poultry, milk, dairy products, and other foods. Since PCBs have not been made since 1977, the levels in the environment have been declining over the past several years. Predators at or near the top of the food chain (e.g. birds, fish) have the highest levels of PCBs in their bodies.
The cell membrane of a tube worm maintain a stable internal environment by:
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make a claim about whether air is matter
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Answer:
Air is matter because it's make up of a mix of different gases. These are made up of elements such as hydrogen, oxygen, and nitrogen, which are made of matter.
Explanation:
is there a word count requirement?
Answer:
Air is matter because it takes up space and has mass.
A way to prove this is by inflating a balloon. Before inflating, the balloon was empty and shapeless. When the balloon was filled with air you know it filled with something. That would be matter.
Which statement describes gravity?
There is no defined unit of measurement for gravity.
Gravity is the force that pulls objects toward Earth’s center.
Objects that have a small mass will have no gravitational pull.
Gravitational pull between two objects decreases as the mass of one increases.
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Answer:
The answer is B. Gravity is the force that pulls objects toward Earth's center.
Explanation:
Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.
Answer:
Gravity is the force that pulls objects toward Earth’s center
Explanation:
help!!! with thesees
Answers
Answer:
The first one
Explanation:
Plants take the enegry from the sun, to make food, but if the sun goes away tthe plants don't have a source to make food from.