B9 - Respiration Flashcards Preview

AQA GCSE Biology > B9 - Respiration > Flashcards

Flashcards in B9 - Respiration Deck (10)
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1
Q

Cellular respiration?

A

Exothermic reaction that occurs continuously in living cells

2
Q

Summary (equation) for aerobic respiration?

A

Glucose + oxygen - carbon duo mixes and water

3
Q

What do you muscles store glucose as?

A

Carbohydrate glycogen

4
Q

During exercise..?

A
  • Glycogen stores in the muscles are converted to glucose for cellular respiration.
  • Increase in heart rate and breathing rate and breathing volume
  • Flow of oxygenated blood to muscles increases
5
Q

D. Anaerobic respiration?

A

Respiration without oxygen.

6
Q

What is glucose broken down into in anaerobic respiration?

A

(Incompletely) lactic acidosis

7
Q

After working for a long time, muscles….

A

Become fatigued and don’t contract efficiently, if oxygen limited = anaerobic respiration.

8
Q

D. Oxygen debt?

A

The extra oxygen that must be taken into the body after exercise has stopped to complete the breakdown of lactic acid.

9
Q

What does metabolism include?

A
  • Conversion of glucose - starch
  • Glycogen - cellulose
  • Formation of lipid molecules
  • Use of glucose and nitrate ions to make amino acids (used to synthesis proteins and break down excess proteins into urea)
10
Q

Where is lactic acid converted into glucose?

A

The liver