Respiration

Question 1

Give 7 uses of energy in the body

Answer 1

• Protein synthesis
• Muscle contractions
• Cell division
• Active transport
• Growth
• Nervous transmission
• Maintaining a constant internal enviroment

Question 2

What is a respiration?

Answer 2

A series of reactions that use enzymes to obtain energy in the form of ATP from larger molecules (e.g glucose)

Question 3

Define aerobic respiration

Answer 3

Chemical reactions in cells that use oxygen to break down molecules to release energy

Question 4

What is the word equation for aerobic respiration?

Answer 4

Glucose+Oxygen ⮕ Carbon dioxide + Water (+energy)

Question 5

C6H12O6 + 6O2 → 6CO2 + 6H2O

Question 6

Define anaerobic respiration

Answer 6

Chemical reactions in cells that break down nutrient molecules to release energy without using oxygen

Question 7

What is the word equation for anaerobic respiration in muscle cells?

Answer 7

Glucose ⮕ Lactic acid + energy

Question 8

What is the word equation for anaerobic respiration in yeast?

Answer 8

Glucose ⮕ Alcohol + Carbon dioxide + energy

Question 9

Which type of respiration produces more energy?

Answer 9

Aerobic respiration produces more energy

Question 10

What builds up in muscle after periods of vigourous exercise?

Answer 10

Lactic acid

Question 11

How is lactic acid removed from the body?

Answer 11

Through aerobic respiration in the liver

Question 12

What happens to the heart and breathing rate immediately after exercise?

Answer 12

They both remain high to increase the rate of aerobic respiration to remove the lactic acid in the liver