Biology I11 Quiz

A protein is an organic compound made up of small molecules called _______________________. 

• amino acids

• carbohydrates

• essential acids

• none of these

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NGSS.HS-LS1-6

How many different types of amino acids exist in nature?

• 5

• 8

• 16

• 20

The largest known proteins are chitins, found in muscle, which are composed from over 27,000 amino acids.

• true

• false

When amino acids bind together, they form a long chains. A protein consists of one or more of these chains.

• monosaccharide

• enzyme

• polypeptide

• hemoglobin

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NGSS.HS-LS1-1

The complex structures of different proteins give them unique properties, which they need to carry out their various jobs in living organisms.

• true

• false

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NGSS.HS-LS1-1

NGSS.HS-LS1-6

A protein may have up to _____ levels of structure.

• 3

• 4

• 5

• 6

Where would you be most likely to find a structural protein?

• The muscle of a leopard

• The root tissue of a cucumber plant.

• The plasma membrane of an amoeba

• you will find a structural protein in all of these

These proteins speed up chemical reactions.

• hemoglobin

• polypeptide

• enzymes

• antibodies

These proteins bind to foreign substances such as bacteria and target them for destruction.

• hemoglobin

• antibodies

• enzymes

• polypeptides

Essential amino acids cannot be absorbed through food.

• true

• false