Answers
Answer:
d. selective breeding
Explanation:
Related Questions
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.
Answers
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.
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
Answers
Answer:
A. provide structure and protection
hope it helps
Which type symmetry applies to animals in the phylum Porifera?
A no symmetry
B bilateral symmetry
C radial symmetry
Answers
Answer:
A no symmetry
Explanation:
Answer:
c.) radial symmetry
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
Answers
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.
hii pls help i’ll give brainliest
Answers
Answer:
They are unequal and act in the same direction. Also Reminder to be happy, go drink some water, eat some food and relax! You are loved :) <3
Explanation:
In order for these runners to have an ample supply of nutrients sent to
all parts of their body, what are the two systems that function together
to perform this task?*
A. Digestive and Muscular
B. Digestive and Circulatory
C. Respiratory and Muscular
D. Respiratory and Circulatory
HELP PLEASE
Answers
Explanation:
B. Digestive and circulatory
hope it helps
Describ how animals receive their energy indirectly from plants?
Answers
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.
In many tropical rainforests, people clear land by cutting down trees and burning them. After a few years, the soil runs out of nutrients and cannot be farmed any longer. How does this affect Earth's atmosphere?
Answers
Answer:
Land will convert into desert eventually
Explanation:
When the soil gets devoid of nutrient, it will be unable to support trees, plants or vegetation of any type. Trees and plants are responsible for holding the soil tightly and prevent it from eroding.
Once there will be no nutrient in soil, there will be no trees, plants or vegetation and hence there will be no mechanism to prevent soil erosion. Thus, the soil will erode due to deforestation and the land will convert into desert eventually
Please help me
need answers
Will give the brainliest!
Answers
Answer:
1. Option B
2. Option B
Please vote brainliest for further answers :)please help its timed
Answers
Hello, jamesundercover06.
The first box, starting on the left, I believe, should be H2O. The second box, the one over the arrow, should be sunlight. The third box, right after the arrow, should be C6H12O6. The final box, then, should be O2. I'm pretty sure that this is right, but if it is incorrect in any way let me know and I will do my best to give you the correct answer.
PS. Brainliest would be appreciated. :)
if a man with type O blood marries a woman with type AB blood , what are chances that their first child will have type O blood
Answers
I think its a 0% chance because
xA xB
xi Ai Bi
y A B
The word "mycotoxins" means © food poisons parasitic poisons fungus poisons O bacteria poisons
Answers
Answer:
I think the answer is food poison
Answer: poisons fungus poisons
Explanation:
4. On the basis of what criteria did Linnaeus classify “natural bodies"
into his system?
Answers
Answer:
Metamorphism is the answer
PLEASE HELP ME ASAP!!
Earth Science - AP_EX
Answers
Answer:
do you like food?
Explanation:
What do the NADPH and ATP do in the Calvin cycle?
Answers
Answer:
ATP and NADPH produced by the light reactions are used in the Calvin cycle to reduce carbon dioxide to sugar. ATP is the energy source, while NADPH is the reducing agent that adds high-energy electrons to form sugar.
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?
Answers
Answer:
T t
T TT Tt
T TT Tt
Explanation:
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
Answers
Answer:
Interphase
Explanation:
interphase
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.
Answers
Answer:
D
Explanation:
To be a livivng thing you must have cells
Explain how the nervous and endocrine systems work together to control the body and maintain homeostasis in a paragraph.
Answers
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.
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.
Answers
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
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
Answers
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?
Answers
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:
What is Mpemba's effect?
Answers
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:
A friend of mine came to see me one day and told me a story of how he met his identical twin that he never knew about. When I questioned him about the details, I got some information about the two men.
John Smith (my friend)
DOB: 11/12/77
Height: 6’1
Eyes: Brown
Hair: Brown
Dave Jones (suspected twin)
DOB: 11/11/77
Height: 6’1
Eyes: Brown
Hair: Brown
What should I tell him about his twin?
Answers
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?
Answers
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:
It is flu season! The flu is caused by a virus. Scientists continue to debate whether or not viruses are alive. If we consider the image of the flu virus seen here, we could say that a virus is NOT alive because https://www.usatestprep.com/modules/gallery/file.php?id=1531 for the picture
Answers
Answer: the answer is D
Explanation:
Answer: There is no cellular structure
Explanation: If we use the image to support our argument, we could say a virus s not living because there is no cellular structure. All prokaryotic cells lack a nucleus. We cannot tell, from the image, anything about its way of life.
I NEEEEEDDDDD HEEEELPPP PLEASE
Answers
Answer:
That is right, internal/external.
Explanation:
Please help!!!!!!!!!!!!!!!!!!!!
Answers
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?
Answers
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.
What might occur if the stoma were all located on the top of the leaves?
Answers
Answer:
It depends on the plant and its environment. In a mesic terrestrial environment, the plant wouldn’t be optimized. Natural selection would then come into play and there would be an evolutionary trend towards stomata located on the lower leaf surface.
In the case of water lily, the lower epidermis is in contact of the water, and stomata are restricted to the upper surface of the leaf. This is an optimal solution for the plant. Natural selection will work to conserve that arrangement. In this case, stomata on the lower surface would exist at a water-air interface, and the diffusion of gasses across that interface would be glacially slow. Further, the stomata on the lower surface would present an opening where pathogens can enter the leaf.
Explanation:
Hope this helps