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2 years ago

Why does the human body shiver?

Biology

2 answers:

gogolik [260]2 years ago

6 0

Answer:

The human body shivers as a way to regulate body temperature. When it's cold outside, you might starts shivering, and that's your body's way of warming up. It rapidly tightens and relaxes your muscles for warmth.

Explanation:

Kamila [148]2 years ago

3 0

Answer:

When your body does become too cold, its automatic response is to tighten and relax the muscles in rapid succession to warm up. This is also known as shivering.

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The series of events in a eukaryotic cell that involve growth, replication and division

Kryger [21]

the answer is cell cycle

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3 years ago

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If an enzyme is added to a chemical reaction, it will do what?

Nana76 [90]

<h2>Answer:</h2>

Option C is correct.

C. lower the activation energy so the reaction rate will increase

<h2>Explanation:</h2>

Enzymes are protein molecules in cells which work as catalysts. Enzymes speed up chemical reactions in the body, but do not get used up in the process. Almost all biochemical reactions in living things need enzymes. With an enzyme, chemical reactions go much faster than they would without the enzyme.

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3 years ago

What is an endomembrane system?

snow_tiger [21]

Answer:

The endomembrane systemis a group of membranes and organelles in eukaryotic cells that works together to modify, package, and transport lipids and proteins.

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3 years ago

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Drag the correct word from the left into the sentence on the right to complete each sentence. In anabolic reactions that involve

kkurt [141]

Answer:

The correct matches are:

In anabolic reactions that involve the synthesis of a large molecule from smaller precursor molecules, NADH and ATP are consumed when they provide the needed electrons or energy.
In catabolic reactions that involve the breakdown of a molecule into smaller subunits, such as glucose to pyruvate, NADH and ATP are produced.
In the reaction Pyruvate +NADH-Lactate +NAD, pyruvate is being reduced.
In the reaction Pyruvate NADH-Lactate +NAD, NADH is being oxidized.

Explanation:

Being involved in synthesis, anabolic reactions require energy in the form of energy storing molecules such as NADH and ATP. Anabolic processes utilize energy produced by the catabolism of complex compounds.
Catabolic processes produce energy or energy storing compounds by breaking down complex substances into simpler ones. All steps of cellular respiration are catabolic processes since they generate energy in the form of ATP or energy yielding molecules such as NADH and FADH2.
Anaerobic respiration takes place during intense physical activity due to which adequate oxygen does not reach the cells. Insufficient oxygen shuttles the pyruvate molecules produced by glycolysis into the lactic acid pathway that reduces pyruvate into lactic acid.
Since, NADH is donating its H+, it is being oxidized to NAD+.

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3 years ago

What can the location of a fossil in a rock layer tell scientists about the organism?

loris [4]

Answer:

I think that answer is A

Explanation:

how long ago did the organism lived

5 0

3 years ago