C1.2 Cell respiration

Question 1

Creation and function of ATP

Answer 1

produced during respiration, fuels most biological reactions and stores the chemical energy

Question 2

Structure of ATP

Answer 2

A nucleotide: 5-carbon sugar, nitrogenous base (adenine), three phosphate groups

Question 3

What processes is ATP required for?

Answer 3

Many life processes, including synthesising molecules, movements and active transport

Question 4

Where does the energy come from to build ATP from ADP? (3)

Answer 4

Cell respiration (energy released from oxidising carbs, fats or proteins), photosynthesis (light energy converted to chemical), or chemosynthesis (energy released from oxidising inorganic substances

Question 5

Cell respiration definition

Answer 5

Carried out by enzymes in a controlled environment, energy comes from food

Question 6

Types of cell respiration (2)

Answer 6

Anaerobic respiration (glucose broken down without oxygen, small but quick production of ATP + lactate, H+ ions accumulate and prevent process beyond 2min), and Aerobic respiration (pyruvate absorbed by mitochondria when oxygen available, broken down to CO2 and water, large amount of ATP produced)

Question 7

Measuring cellular respiration

Answer 7

With respirometer