Answer:
When neurons communicate, an electric impulse triggers the realease of neurotransmitters from the axon into the synapse. The neurotransmitters cross the synapse and bind to special molecules on the other side ,called receptors. Receptors are located on the dendrites. Receptors receive And process the messages
Write a paragraph explaining the steps involved in a muscle contraction starting from the brain sending a signal to the muscle and ending with the muscle contraction.
Answer:
A Muscle Contraction Is Triggered When an Action Potential Travels Along the Nerves to the Muscles.Muscle contraction begins when the nervous system generates a signal. The signal, an impulse called an action potential, travels through a type of nerve cell called a motor neuron. The neuromuscular junction is the name of the place where the motor neuron reaches a muscle cell. Skeletal muscle tissue is composed of cells called muscle fibers. When the nervous system signal reaches the neuromuscular junction a chemical message is released by the motor neuron. The chemical message, a neurotransmitter called acetylcholine, binds to receptors on the outside of the muscle fiber. That starts a chemical reaction within the muscle.Acetylcholine Is Released and Binds to Receptors on the Muscle Membrane.
A multistep molecular process within the muscle fiber begins when acetylcholine binds to receptors on the muscle fiber membrane. The proteins inside muscle fibers are organized into long chains that can interact with each other, reorganizing to shorten and relax. When acetylcholine reaches receptors on the membranes of muscle fibers, membrane channels open and the process that contracts a relaxed muscle fibers begins:
Open channels allow an influx of sodium ions into the cytoplasm of the muscle fiber.
The sodium influx also sends a message within the muscle fiber to trigger the release of stored calcium ions.
The calcium ions diffuse into the muscle fiber.
The relationship between the chains of proteins within the muscle cells changes, leading to the contraction.
Explanation:
Sry I don’t know how to explain It’s a lot.
If you were to examine a sample of 1000 cells, in which of the phases listed below would you expect to find most of the
cells?
O Interphase
O Metaphase
O Anaphase
O Telophase
Answer:
Interphase
Explanation:
interphase
Why didn’t Henrietta get compensated for her cells
The word “contract” in this paragraph tell you:
A. The muscles are involuntary
B. The muscles are aching
C. The muscles become larger
D. The muscle tighten inward
Which of the following is a characteristic that only living things share?
O A. They grow and develop.
O B. They need materials and energy.
O C. They respond to their environment.
O D. They are made of at least one cell.
Answer:
D
Explanation:
To be a livivng thing you must have cells
what is one difference between ion channels and ion pumps
Answer:
Ion pumps can be distinguished from ion channels on the basis that ion pumps actively transport ions against a concentration gradient, while ion channels allow ions to passively flow down a concentration gradient.
Explanation:
In corgis, a breed of dog, short tails are completely dominant to long tails. If two long-tailed corgis have puppies, what is the percent chance of having a puppy with a short tail?
Answer:
0%
Explanation:
This question involves a single gene coding for tail length in a breed of dog called Corgis. The allele for short tail (S) is dominant over the allele for long tail (s).
According to this question, two long-tailed corgis are crossed i.e. ss × ss. Each parent corgis will produce only 's' gametes. Using this gametes in a punnet square (see attached image), the following proportion of puppies will be produced:
All ss (long-tailed) offsprings/puppies.
Based on the question asked, 0% or none of the puppies produced will have a short tail.
How would life on earth change if there was no clean water or air?
Answer:
With no water supply, all vegetation would soon die out and the world would resemble a brownish dot, rather than a green and blue one. Clouds would cease to formulate and precipitation would stop as a necessary consequence, meaning that the weather would be dictated almost entirely by wind patterns.
are food will die then the animals will die then we would die and the earth wouldn't be green no more it will be brown and bry there will be no clouds ether or grass
Describ how animals receive their energy indirectly from plants?
Answer:
PLANTS are 'PRODUCERS' of energy. They use SUNLIGHT + water, minerals and carbon dioxide to make energy. ... To get energy animals need to eat. They get their energy INDIRECTLY from the from the sun by eating other organisms.
A plant shows incomplete dominance in size. A tall plant (TT) is crossed with a medium plant (Tt).
What percentage of the plants will be tall?
Answer:
T t
T TT Tt
T TT Tt
Explanation:
.In the cladogram above, which pair of species is most closely related to each other? * 2 points a. Hamster and salamander b. Lizard and salamander c. Salamander and mountain lion
Answer:
b. Lizard and salamander
Explanation:
Both Lizard and salamander are closely related species because of their body structure and appearance. Both Lizard and salamander have similar shape and structure but belongs to different group. Lizard belongs to reptiles whereas salamander belongs to amphibian family. Both Lizard and salamander are vertebrates, cold blooded animals, carnivorous, has a tail and four legs. So we can conclude that both Lizard and salamander are closely related to each other.
A student created a table to compare animal adaptations. Based on the table, which
animal has a behavioral adaptation, and how does it give the animal an advantage?
Animal Adaptation
Duck Webbed feet
Squirrel Collects and stores food
The duck, because the behavioral adaptation allows it to catch prey.
The duck, because the behavioral adaptation helps it survive the environment.
The squirrel, because the behavioral adaptation provides food during winter.
The squirrel, because the behavioral adaptation to have more offspring.
Answer:
B
Explanation:
Ducks have the webbed feet so, they could swim in the water so they don't drown. That is animal adaptation to the environment.
Based on the given table, the animal with a behavioral adaptation is the squirrel, which collects and stores food. This adaptation gives the squirrel an advantage by helping it survive during times when food is scarce, such as during the winter months, which is in the third option.
What is behavioral adaptation?The behavioral adaptation of collecting and storing food is an important survival strategy for many animals, including squirrels. During times of abundance, such as the fall months, squirrels will collect and store food, such as nuts and seeds, in order to have a food source during times of scarcity, such as the winter months. This allows the squirrel to survive and avoid starvation during times when food is less readily available.
Hence, Based on the given table, the animal with a behavioral adaptation is the squirrel, which collects and stores food. This adaptation gives the squirrel an advantage by helping it survive during times when food is scarce, such as during the winter months, which is in the third option.
Learn more about the behavioral adaptation here.
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Two interacting systems involved in plant transport are shown here. Which statement best describes the function of xylem and phloem in transporting substances throughout the plant?
Answer:
C. Xylem transport water and nutrients from the soil to the leaves while phloem transport carbohydrates from the leaves to the rest of the plant.
Explanation:
What is Mpemba's effect?
Answer: The Mpemba effect is a catch-all term for possible cases in which hot water appears to freeze faster than cold water. The phenomenon is temperature-dependent. There is disagreement about the parameters required to produce the effect and about its theoretical basis.
Explanation:
Answer:
The Mpemba effect is a catch-all term for possible cases in which hot water appears to freeze faster than cold water.
Explanation:
Fitness is defined as the probability of an organism ............ and ............ in the environmen
in which it is found.
Which words correctly complete gaps 1 and 2?
A. photosynthesising and respiring
B. reproducing and respiring
C. surviving and reproducing
D. surviving and photosynthesising
Answer:
C
Explanation:
Where does The energy come from to heat the oceans
Answer:
the sun
Explanation:
A plant can be made resistant to weed killers through genetic engineering. how can genetic engineering create a plant resistant to the weed killer?
A. By exposing the plant to different weed killers
B. By modifying the plant’s cells to make new proteins
C. By harvesting the plant in a different season
D. By exposing the plant’s cells to ultraviolet radiation
Biology 1
Food web
Food chain
Hurry up pls
What are the two functions of the skeletal system? *
A. Provides stucture and protection
B. Sends and recièves signals throughout the body
C. Obtain nutrients and removes waste produced by the body
D. Regulates body temperature and protects the body from damage.
HELP PLEASE
Answer:
A. provide structure and protection
hope it helps
The sugar that is made during photosynthesis is ribose.
True
False
Answer:
True! :) Also, reminder drink some water and relax. <3
Explanation:
GIVING BRAINLIEST!!!!!!
Rule 1: Multiply by 2 starting at 10. Rule 2: Subtract 4 starting from 24. What is the first term that appears in both sequences?
10
14
20
26
Answer: 20. have a nice day!
Answer:
Explanation:
30
Examine the image that shows the folds in the lining of the small intestine. Which of the statements best describes the interaction between the small intestine and another organ based on the model shown here?
Answer: It’s C.) The increased surface area to volume ratio of the small intestine allows for the absorption of materials into the bloodstream more efficiently.
Explanation:
The word "mycotoxins" means © food poisons parasitic poisons fungus poisons O bacteria poisons
Answer:
I think the answer is food poison
Answer: poisons fungus poisons
Explanation:
In a certain ecosystem, there is a population of lynx that feed on snowshoe hares. If there is less food for the hare for several years, what will most likely be the result for the lynx population?
A. The lynx population will increase.
B. The lynx population will decrease.
C. The lynx population will go extinct.
D. The lynx population will stay the same.
Answer:
B
Explanation:
since the will be less food for the hare, less hare will be able to survive. that means some lynx will not get hare and the lynx will die which means the lynx population will decrease
What is the molecule called that all living things use for immediate
useable energy?
ATP, Sugar,fat, All of these
Hello there!
I think ATP would be the answer in this instance. See, ATP is the pure form of energy that cells prefer to use. Sugars and fats are good for energy, too - but sugars and fats must be converted into energy before use. So ATP is the only energy source listed that doesn't need to be metabolized before the cell can use the energy.
I hope this helps!!
Select the statement that describes the major site where antiviral action is blocked by the protease inhibitors. Select one: a. The protease inhibitors block the ability of the human immunodeficiency virus from attaching and entering the cell membrane. b. The protease inhibitors block the uncoating process of the human immunodeficiency virus by binding to protease. c. The protease inhibitors block the nucleic acid synthesis of the human immunodeficiency virus. d. The protease inhibitors inhibit the late protein synthesis and processing of the human immunodeficiency virus.
Answer:
d. The protease inhibitors inhibit the late protein synthesis and processing of the human immunodeficiency virus.
Explanation:
Protease inhibitors are antiviral agents used to fight against pathogenic viruses such as retroviruses (e.g., human immunodeficiency virus, HIV) and RNA viruses (e.g., hepatitis C virus). Protease inhibitors can drastically reduce the viral load. Protease inhibitors may target 1-virus-encoded proteases which are responsible to produce functional proteins from polyprotein precursors and 2-processing structural proteins that are required for virus assembly. Some examples of protease inhibitors include, among others, ritonavir and indinavir, which are used in patients with HIV infection.
Explain how the nervous and endocrine systems work together to control the body and maintain homeostasis in a paragraph.
Answer:
Explanation:
The nervous system controls virtually all body activities, and the endocrine system secretes hormones that regulate these activities. Functioning together, the organ systems supply body cells with all the substances they need and eliminate their wastes. The glands of the endocrine system secrete hormones into the bloodstream to maintain homeostasis and regulate metabolism. The hypothalamus and the pituitary gland are the command and control centers, directing hormones to other glands and throughout the body.
Please help me
need answers
Will give the brainliest!
Answer:
1. Option B
2. Option B
Please vote brainliest for further answers :)4. This photograph was taken in 2004, 24 years after Mount Saint Helens erupted. Compare and contrast this photo with the previous three. What changes do you see in the biotic and abiotic factors? Does anything surprise you about this series of photographs?
Answer:
In this picture the ground is now completely covered in vegetation and trees are growing back all along the road and sides of the picture. Then there’s little flowers and grass and bushed all over the place. In the other pictures the ground was bare, with the second and third pictures having bushes and other little vegetation starting to grow. Changes in the Biotic Factors: There are now larger trees, there is grass, flowers, small bushes, and other small vegetation growing. Changes in Abiotic Factors: The ground is no longer dust and ash, The dead trunks and branches are covered in vegetation for the most part and are decomposing.
Explanation:
Brainliest Please?!
What magnification will you generally start out using when scanning for parasites? A. 4X. B. 10X. C. 40X. D. Both A and B.
Answer:
Explanation:
D. Both A and B