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VARVARA [1.3K]
3 years ago
9

Explain how the heart work?

Biology
1 answer:
Triss [41]3 years ago
3 0
You heart is a specialised muscle the pumps you blood around you body and your blood carries oxygen and nonrishment to all parts of your body and carries waste products to serevrial organs, notably your lungs and kidneys to eliminate. your heart is divded into two pumps witch works together  
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Chemical substances in plants that act as internal stimuli are called
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I believe the answer is hormones. correct me if i'm wrong.
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A worker sprayed fertilizers, which stimulate the growth of native bacteria, on an oil-soaked area. Which one of the following c
larisa [96]
<span>The best answer is :
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What type of air does cold, dense air often converge with to form a thunderstorm?
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7 0
3 years ago
The cholesterol associated with animal cell membranes
bekas [8.4K]

Cholesterol is one of the molecules composing the cell membrane. b) makes the cell membrane fluid at room temperature.  

<h3>What is the role of cholesterol in the cell membrane?</h3>

The cell membrane is composed of two lipidic bilayers, cholesterol, proteins, and glucans incrusted in between.

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Their proportion on both sides of the membrane is almost the same.

Cholesterol is a significant molecule that contributes to the membrane fluidity, separates phospholipids, and interact with membrane proteins regulating in their activity.

The correct option is b). makes the cell membrane fluid at room temperature.

You can learn more about cholesterol at

brainly.com/question/2114495

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7 0
2 years ago
You are called for a young man who was diving head first off a dock into a lake. Bystanders say he struck his head on the bottom
castortr0y [4]

Answer:

Answer is C. Damage to C3, C4 or C5.

Explanation:

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The C3, C4 and C5 are at the midsection of the cervical region of the spine , and they provide support for the neck and the head.

These vertebrae contain nerves which if affected will cause a serious pain. which can actually affect his breathing. Because, the spinal nerves around the spinal cord are linked to the brain.

7 0
3 years ago
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