B1a - Water, Ions and ATP

Question 1

What is a monomer?

Answer 1

Small, individual molecules which join together to form polymers

Question 2

What is a polymer?

Answer 2

Large molecules made up of smaller, individual molecules called monomers

Question 3

Carboxyl group

Answer 3

COOH

Question 4

Hydroxyl group

Answer 4

OH

Question 5

Amine group

Answer 5

NH2

Question 6

Methyl group

Answer 6

CH3

Question 7

The type of bonding between water molecules

Answer 7

Hydrogen bonding

Question 8

5 properties of water

Answer 8

Cohesive, adhesive, good solvent, high specific heat capacity and high latent heat of vapourisation

Question 9

Example of cohesion

Answer 9

Provides surface tension and allows columns of water

Question 10

Example of adhesion

Answer 10

Attraction between water molecules and the wall of the xylem

Question 11

Example of solvency

Answer 11

Dissolved substances in blood

Question 12

Example of specific heat capacity

Answer 12

Buffers changes in temperature to provide stable aquatic environment

Question 13

Example of latent heat of vapourisation

Answer 13

Cooling effect in animals and plants

Question 14

Components of ATP

Answer 14

Adenine, ribose and three phosphate groups

Question 15

Three differences between ATP and a DNA nucleotide

Answer 15

ATP has ribose, not deoxyribose; ATP has 3 phosphates, not 1 phosphate; ATP always has adenine base, DNA base varies

Question 16

Which enzyme catalyses hydrolysis of ATP to ADP and Pi?

Answer 16

ATP hydrolase

Question 17

Which enzyme catalyses condensation of ADP and Pi to ATP?

Answer 17

ATP synthase

Question 18

Inorganic phosphate

Answer 18

Used to phosphorylate other compounds making them more reactive