respiration

Question 1

What is respiration?

Answer 1

-a chemical reaction that occurs in the mitochondria of all living organisms.

Question 2

What is the purpose of respiration?

Answer 2

to release energy

Question 3

What is the formula for aerobic respiration? (word)

Answer 3

oxygen + glucose -> carbon dioxide + water + energy

Question 4

What is the formula for aerobic respiration? (chemical)

Answer 4

C(6)H(12)O(6) + O(2) -> 6CO(2) + 6H(2)O + energy

Question 5

Where does glucose come from?

Answer 5

The digestion of carbohydrates

Question 6

Where does the oxygen come from?

Answer 6

The air which we breathe in

Question 7

Where does the carbon dioxide released from?

Answer 7

breathing out, via gas exchange

Question 8

Where is water released from?

Answer 8

when exhaled

Question 9

What causes a stitch?

Answer 9

anaerobic respiration

Question 10

When does anaerobic respiration occur?

Answer 10

When doing a physical activity and there is a lack of oxygen.

Question 11

What is the equation for anaerobic respiration?(animals)

Answer 11

glucose -> lactic acid + energy

Question 12

What is the equation for anaerobic respiration? (plants)

Answer 12

glucose -> carbon dioxide + ethanol + energy

Question 13

Is more or less energy released in anaerobic respiration then aerobic respiration?

Answer 13

less as there are more bonds broken, leading to more products made however in anaerobic respiration, there are less bonds broken as the glucose is partly broken down

Question 14

What does a build up of lactic acid cause?

Answer 14

muscle fatigue

Question 15

What is oxygen debt?

Answer 15

The extra oxygen needed to destroy the build up of lactic acid after exercise

Question 16

How do we get the oxygen needed in oxygen debt?

Answer 16

We breathe deeper and faster

Question 17

Where does anaerobic respiration take place?

Answer 17

the muscles

Question 18

What happens in oxygen debt?

Answer 18

The lactic acid is transported from the muscles to the liver and converted back to glucose via the blood. This requires oxygen.

Question 19

Where does anaerobic respiration take place in the industry?

Answer 19

It takes place in yeast and is called fermentation. The alcohol that is produced is ethanol and is used in alcoholic drinks

Question 20

What is yeast used for in making bread?

Answer 20

The anaerobic respiration that takes place in the yeast causes CO(2) which causes the bread to rise, leading to a higher yield

Question 21

What are the 4 main factors in the industry?

Answer 21

• temp
• oxygen supply
• amount of glucose
• unwanted microorganisms kept out

Question 22

What is recovery time?

Answer 22

The time taken for the HR, breathing rate and lactic acid take to get back to normal levels.

Question 23

What can recovery time be used for?

Answer 23

Measuring how fit someone is