Bioenergetics

Question 1

What is cellular respiration?

Answer 1

An exothermic reaction, which transfers energy from glucose, and is continuously occurring in living cells.

Question 2

What are three examples of how organisms use energy?

Answer 2

To build larger molecules from smaller.
Maintain body temperature.
Muscular contraction.

Question 3

What is metabolism?

Answer 3

All the chemical processes that occur within a living organism in order to maintain life.

Question 4

What is aerobic respiration?

Answer 4

Takes place whenever there is enough oxygen, and is the more efficient way to transfer energy from glucose continuously.
Specifically used in mitochondria.

Question 5

What is the word equation for aerobic respiration?

Answer 5

Glucose+oxygen -> carbon dioxide+ water

Question 6

What is anaerobic respiration?

Answer 6

Used when we can’t get enough oxygen to keep up with aerobic respiration.

Question 7

What is the word equation for anaerobic respiration?

Answer 7

Glucose -> lactic acid

Question 8

What are two reasons why we prefer not to use anaerobic respiration?

Answer 8

There is an incomplete breakdown of glucose molecule, so it doesn’t unlock all the energy.
Lactic acid builds up, which has to be removed.