B9 - Respiration

Question 1

Cellular respiration?

Answer 1

Exothermic reaction that occurs continuously in living cells

Question 2

Summary (equation) for aerobic respiration?

Answer 2

Glucose + oxygen - carbon duo mixes and water

Question 3

What do you muscles store glucose as?

Answer 3

Carbohydrate glycogen

Question 4

During exercise..?

Answer 4

• 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

Question 5

D. Anaerobic respiration?

Answer 5

Respiration without oxygen.

Question 6

What is glucose broken down into in anaerobic respiration?

Answer 6

(Incompletely) lactic acidosis

Question 7

After working for a long time, muscles….

Answer 7

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

Question 8

D. Oxygen debt?

Answer 8

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

Question 9

What does metabolism include?

Answer 9

• 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)

Question 10

Where is lactic acid converted into glucose?

Answer 10

The liver