2.8 cellular respiration

Question 1

components of an ATP molecule

Answer 1

3 phosphates
ribose
adenine

Question 2

three main cellular processes that use ATP as a source of energy

Answer 2

Active transport
* Mitosis
* DNA replication/transcription; translation

Question 3

write the cell respiration equation

Answer 3

C₆H₁₂O₆ + 6O₂ ->6CO₂ + 6H₂O + ATP

Question 4

cell respiration definition

Answer 4

the controlled release of energy from organic compounds to produce ATP

Question 5

two organic molecules, other than glucose, which could be used for respiration

Answer 5

amino acids
Fatty acids

Question 6

two regions of the cell in which respiration takes place.

Answer 6

Cytosol (or cytoplasm) and mitochondria

Question 7

distinguish b/w the terms aerobic and anaerobic

Answer 7

Aerobic: In the presence of oxygen
Anaerobic: In the absence of oxygen

Question 8

Describe how and why yeast is used in bread making

Answer 8

-Anaerobic respiration. Sugars is dough are consumed
-Produces CO2 gas → bubbles in bread.
-Ethanol is also produced but evaporates during baking.

Question 9

3 activities that require anaerobic respiration

Answer 9

• Baking
• Biofuel production
• High intensity sports (ex: sprinting)

Question 10

Explain why anaerobic respiration can only be done for short periods of time.

Answer 10

Produced little ATP (insufficient to fuel other cell processes).
Build up of lactic acid which is damaging to cells. Needs to be removed aerobically.