Proteins and lipids quiz

Question 1

Elements in a protein

Answer 1

Hydrogen, carbon, oxygen, nitrogen, sulfur

Question 2

8 different types of proteins

Answer 2

Enzymes, Structural, Contractile, defensive, signal, transport, storage and receptor

Question 3

enzymes

Answer 3

facilitate biochemical reactions- catalyst. ex: lactase

Question 4

structural

Answer 4

Support for various body parts. ex: collagen and keratin

Question 5

Contractile

Answer 5

responsible for muscle contraction: actin, myosin

Question 6

defensive

Answer 6

antibodies in the immune system

Question 7

signal

Answer 7

carry chemical message: insulin

Question 8

transport

Answer 8

proteins that move molecules throughout the body: hemoglobin

Question 9

storage

Answer 9

store amino acids for body to use: ovalbumin

Question 10

receptor

Answer 10

receives chemical signal from outside cells

Question 11

Monomers of proteins

Answer 11

amino group, carboxyl group, central carbon, hydrogen atom and side chain

Question 12

what bond holds amino acids in a polpeptide

Answer 12

peptide bonds

Question 13

What determines a proteins shape

Answer 13

the order of aminos

Question 14

what purpose do lipids serve in living organism

Answer 14

energy storage, cushioning organs, make up cell membrane and some are hormones

Question 15

What are the 3 types of lipids

Answer 15

triglycerides, phospholipids, steroids

Question 16

what makes a lipid unsaturated?

Answer 16

double bond between carbons

Question 17

how to draw phospholipid

Answer 17

circle then a rectangle then one straight line and one bent

Question 18

Lipids are arranged in two layers why?

Answer 18

a polar and non polar layer. polar ends face outside because they are hydrophilic

Question 19

What do triglycerides and phospholipids have in common

Answer 19

made up of fatty acids and are hydrophobic

Question 20

difference between triglycerides and and phospholipids

Answer 20

1 has 2 fatty acid chains and one has three

Question 21

Structure of steroids

Answer 21

3- 6 sided ring and 1 half ring

Question 22

EXAMPLES of steroids

Answer 22

tiestorone and cholestoral