Proteins + Amino Acids

Question 1

In cell membranes

Answer 1

Important structural role

Question 2

Play role in

Answer 2

Transport, as nutrients, some hormones, movement, and protection against disease

Question 3

Reserve source of

Answer 3

Energy, excess amino acids broken down in liver to be converted into energy rich fats or glucose

Question 4

Serve as

Answer 4

Enzymes with control rate of reactions and regulate cell processes

Question 5

Groups with proteins contain

Answer 5

Amine and carboxyl

Question 6

Proteins are composed of

Answer 6

C, N, H, O

Question 7

Fibrous

Answer 7

Hydrophobic, tough, hard but non mineralized structures

Question 8

Globular

Answer 8

Hydrophilic

Question 9

Number of amino acids

Answer 9

20 different amino acids

Question 10

Bind by means of

Answer 10

Peptide bonds

Question 11

Bacteria and plangs

Answer 11

Can produce own amino acids from more simple compounds

Question 12

Animals

Answer 12

Some of the simple amino acids

Question 13

Essential amino acids

Answer 13

Cannot be produced by animal cells or not in sufficient quantities, plants

Question 14

Proteins involved in

Answer 14

All cellular reactions

Question 15

Primary protein structure

Answer 15

Sequence of a chain of amino acids

Question 16

Secondary protein structure

Answer 16

Occurs when sequence of amino acids are linked by hydrogen bonds

Question 17

Tertiary protein structure

Answer 17

Occurs when certain attractions are present between alpha helices and pleated sheets

Question 18

Quaternary protein structure

Answer 18

A protein consisting of more than one amino acid chain

Question 19

Heat or pH changes

Answer 19

Protein denatures, 3D structure is destroyed, cannot function properly

Question 20

Low temp.

Answer 20

Make proteins inactive