2.3 Proteins

Question 1

Protein?

Answer 1

Large biomolecules (complex polymer) consisting of one or more chains of amino acids.

Question 2

Function of protein?

Answer 2

Catalyzing reactions, replicating DNA and transporting molecules.

Question 3

What is protein composed of?

Answer 3

Carbon, hydrogen, oxygen, nitrogen and sometimes sulfur.

Question 4

Where is protein found?

Answer 4

Meat, cheese, eggs, and nuts.

Question 5

What are the three parts of a protein?

Answer 5

Amino acids, peptide bond, polypeptide.

Question 6

What is an amino acid?

Answer 6

Components of a protein are monomers called amino acids. Composed of a central carbon atom bonded to a hydrogen atom, an amino group and a carboxyl group and a variable group.

Question 7

Polypeptides?

Answer 7

Amino acids are linked into chains called polypeptides.

Question 8

Peptide bonds?

Answer 8

Amino acids form covalent bonds, called a peptide bond with each other.

Question 9

How many amino acids are there and what determines their function?

Answer 9

20, the order determines their function. They only differ in their side group “R.”

Question 10

What is the carboxyl group?

Answer 10

-COOH

Question 11

What is the amino group?

Answer 11

(-NH little 2)

Question 12

Variable group?

Answer 12

(-R)