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timofeeve [1]
3 years ago
12

When you are cold, your muscles begin to contract involuntarily and cause you to shiver. why do you think this occurs? how does

the contraction of muscles help the body maintain homeostasis?
Biology
1 answer:
DanielleElmas [232]3 years ago
5 0
Shivering occurs when the core temperature of the body begins to decrease which would threaten normal body function. Shivering is a response by the body to bring back temperature back to homeostasis. Trembling is the continual involuntary contraction of muscles. Muscle activity releases heat that warms up the body. This is the reason why we sweat during physical activities as the body sheds excess heat generated by the muscles in order to maintain the homeostatic body temperatures of 37 degrees centigrade.
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Name the 6 roles of proteins in the body.
Sphinxa [80]

Answer: 1. Repair and Maintenance

Protein is termed the building block of the body. It is called this because protein is vital in the maintenance of body tissue, including development and repair. Hair, skin, eyes, muscles and organs are all made from protein.

2. Energy

Protein is a major source of energy. If you consume more protein than you need for body tissue maintenance and other necessary functions, your body will use it for energy. If it is not needed due to sufficient intake of other energy sources such as carbohydrates, the protein will be used to create fat and becomes part of fat cells.

3. Hormones

Protein is involved in the creation of some hormones. These substances help control body functions that involve the interaction of several organs. Insulin, a small protein, is an example of a hormone that regulates blood sugar. It involves the interaction of organs such as the pancreas and the liver. Secretin, is another example of a protein hormone. This substance assists in the digestive process by stimulating the pancreas and the intestine to create necessary digestive juices.

4. Enzymes

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Protein is a major element in transportation of certain molecules. For example, hemoglobin is a protein that transports oxygen throughout the body. Protein is also sometimes used to store certain molecules. Ferritin is an example of a protein that combines with iron for storage in the liver.

6. Antibodies

Protein forms antibodies that help prevent infection, illness and disease. These proteins identify and assist in destroying antigens such as bacteria and viruses. They often work in conjunction with the other immune system cells. For example, these antibodies identify and then surround antigens in order to keep them contained until they can be destroyed by white blood cells.

Explanation:

8 0
2 years ago
Mike earned scores of 88,91,75,and 72 on four math tests determine his score on the fifth test if his average for five tests was
My name is Ann [436]

Explanation : x = 79 marks

The marks scored by Mike on four math test are 88,91,75 and 72.

Average of marks, A = 81

Let in fifth test he scores x marks.

The formula for finding average is :

A=\dfrac{sum\ of\ scored\ marks}{no.\ of \ tests}

81=\dfrac{88+91+75+72+x}{5}

\dfrac{326+x}{5}=81

x=79

In the fifth test he scores 79 marks.

Hence, this is the required solution.

4 0
3 years ago
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sergiy2304 [10]
Oil Coal and Natural Gas are the fossil fuels the USA has the most reserves of. Given that only one of them is on the answers Coal is the correct answer.

8 0
3 years ago
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Primary reinforcers are related to secondary reinforcers in which of the following ways?
LuckyWell [14K]
You didn't provide us with any possible ways? Primary reinforcers are, however, types of reinforcers where they immediately elicit a reward or reward-like behavior once they are applied in a situation. An example would be apple juice. 

Secondary reinforcers on the other hand need to be associated with something for them to become reinforcers or they provide rewards in a non-direct way. An example would be money.

This is the main relationship between them.
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The structur of a lymphatic vessel is most similar to that of a
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Answer: It would be similar to  veins

Explanation:

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