C6.2.8 - Biological polymers

Question 1

What are DNA molecules made from?

Answer 1

They are made from monomers called nucleotides

Question 2

What does a nucleotide consist of?

Answer 2

A phosphate group, a sugar called deoxyribose, an organic base

Question 3

What are the 4 different bases?

Answer 3

adenine, thymine, cytosine, guanine

Question 4

What forces or bonds are there between bases in opposite strands?

Answer 4

Intermolecular forces called hydrogen bonds form between bases in opposite strands

Question 5

How many bonds link cytosine and guanine?

Answer 5

3 hydrogen bonds

Question 6

How many bonds link adenine and thymine?

Answer 6

2 hydrogen bonds

Question 7

What are protein molecules made from?

Answer 7

Monomers called amino acids

Question 8

What are carbohydrates?

Answer 8

They are compounds if carbon, hydrogen and oxygen. They include simple sugars, such as deoxyribose and sucrose

Question 9

What is sucrose made from?

Answer 9

Glucose and fructose

Question 10

What does starch consist of?

Answer 10

Very many simple sugar molecules joined together

Question 11

What is a complex carbohydrate?

Answer 11

Polymer made from sugar molecules