please help me?

Question

Cellular (aerobic) respiration takes place in the presence of and with the use of which of the following?

a oxygen
b carbon dioxide
c water
d sunlight


2. Which of the following would happen to a cell if cellular respiration suddenly ceased?

a Glucose breakdown would increase.
b ATP production would increase significantly.
c Glucose breakdown would nearly stop or cease entirely.
d The cell would use water for energy.


3. The early organisms on earth also needed to break down glucose to generate energy to survive. Which of the following processes did they most likely use?

a anaerobic respiration
b aerobic respiration
c photosynthesis

Answer 1

a
c
a

Answer 2

1. a
2. c
3. a