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kvv77 [185]
3 years ago
9

Why are certain amino acids called essential amino acids?

Biology
2 answers:
Finger [1]3 years ago
7 0

B. because they are not manufactured by the body


tamaranim1 [39]3 years ago
6 0

I just took a test with this question and the answer is:

B - Because they are not manufactured by the body.

Similar to fatty acids, some amino acids are not manufactured by the body but must be obtained from food. Scientists call them the essential amino acids.

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which of the following statements most accurately reflects the mental health focus of the latter half of the 20th century? selec
VladimirAG [237]

The statement which most accurately reflects the mental health focus of the latter half of the 20th century is it's primarily focusing on negative aspects with little attention paid to the positive and is denoted as option C.

<h3>What is Mental health?</h3>

This is a term which is used to denote the cognitive, behavioral, and emotional well-being of an individual.

In  the  latter half of the 20th century , it primarily focused on negative aspects with little attention paid to the positive which is why there is a spike in the amount of sui-cide and other forms of mental deficiencies.

Read more about Mental health here brainly.com/question/24516788

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5 0
1 year ago
According to what you have learned about the circulatory and respiratory systems, explain how and why your heart changed its rat
maks197457 [2]

Answer:

Your heart changes its rate depending on the activity, so that it can carry blood to your muscles, and therefore it needs to beat stronger if you are performing some exercise, or not so strong if you are sleeping, for example.

Explanation:

Your heart is continuously beating to keep blood circulating throughout your body.

So, here it is why your heart changes its rate: Its rate changes depending on your activity level; it is lower while you are asleep and at rest and higher while you exercise to supply your muscles with enough freshly oxygenated blood to keep the functioning at a high level.

And how: depending on your activity level, your heart has to pump enough blood to your muscles. Blood carries needed oxygen and other nutrients. Muscles need more blood sugar than any other tissue especially when working hard. To supply your muscles with oxygen your heart needs to beat faster, and this builds up your heart muscles.

3 0
3 years ago
You are given an earthworm and you are asked to study the internal structure of the earthworm. Which one of the following will y
timama [110]

Answer:

C

Explanation:

5 0
4 years ago
Choose all the answers that apply.
BARSIC [14]

Answer:

has two recessive genes ............option A

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Which statement correctly compares the roles of different types of organic molecules in the body?
kvasek [131]

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