1.4 Macromolecules Part 2

Question 1

What forms the backbone of the DNA?

Answer 1

sugar and phosphate groups

Question 2

What is the shape of DNA?

Answer 2

double helix

Question 3

How are the two strands of DNA held together?

Answer 3

hydrogen bonding

Question 4

Which nitrogenous bases pair together?

Answer 4

A and T
G and C

Question 5

How many hydrogen bonds are formed between A and T?

Answer 5

two

Question 6

How many hydrogen bonds are formed between G and C?

Answer 6

three

Question 7

What sugar does DNA contain?

Answer 7

deoxyribose

Question 8

What sugar does RNA contain?

Answer 8

ribose

Question 9

Which is always single stranded: DNA or RNA?

Answer 9

RNA

Question 10

What are the bases in RNA?

Answer 10

A
U
G
C

Question 11

What are lipids composed of?

Answer 11

hydrophobic hydrocarbons

Question 12

What is the primary role of lipids?

Answer 12

forming the foundation of the plasma membrane

Question 13

What does carbohydrate literally mean?

Answer 13

watered carbon

Question 14

What are carbohydrates composed of?

Answer 14

C, H, O

Question 15

What is the basic chemical formula of carbohydrates?

Answer 15

CH2O

Question 16

What are the three groups of carbohydrates?

Answer 16

monosaccharide
disaccharide
polysaccharide

Question 17

What is a monosaccharide?

Answer 17

one sugar unit

Question 18

What are examples of monosaccharides?

Answer 18

glucose
fructose
galactose

Question 19

What structure of monosaccharides do cells favor?

Answer 19

ring

Question 20

What are disaccharides?

Answer 20

2 monosaccharides joined together