2.8 Cell respiration

Question 1

cell respiration

Answer 1

the controlled release of energy from organic compounds to produce ATP

Question 2

features of cell respiration

Answer 2

organic compounds are broken down to release energy, which can then be used in the cell
uses enzymes in a careful and controlled way so as much energy is released as possible

Question 3

sources of organic compounds broken down in cell respiration

Answer 3

human: the food we eat
plants: carbohydrates or lipids made by photosynthesis

Question 4

ATP

Answer 4

adenosine triphosphate from cell respiration in immediately available as a source of energy in the cell

Question 5

what do cells require energy for?

Answer 5

synthesise large molecules like RNA, DNA and proteins
pump molecules or ions across membranes by active transport
move things around inside the cell

Question 6

ATP features

Answer 6

readily available to use just by splitting AP into ADP and phosphate
converted into heat

Question 7

anaerobic respiration + uses

Answer 7

glucose is broken down in anaerobic cell respiration without using any
oxygen.

short but rapid burst of ATP production is needed
oxygen supplies run out
environments that lack oxygen

Question 8

anaerobic respiration equations

Answer 8

glucose -> lactate

glucose -> ethanol + carbon dioxide

Question 9

anaerobic respiration in yeasts and its uses

Answer 9

Anaerobic cell respiration in yeast is the basis for production of foods, drinks and renewable energy.

Question 10

anaerobic respiration in humans and its uses

Answer 10

Lactate production in humans when anaerobic respiration is used to maximize the
power of muscle contractions.
used when we need to maximise the
power of muscle contractions.

Question 11

aerobic respiration + uses

Answer 11

Aerobic cell respiration requires oxygen and gives a large yield of ATP from glucose.

Question 12

aerobic respiration formula

Answer 12

glucose + oxygen -> carbon dioxide + water