Respiration

Question 1

What is respiration?

Answer 1

The process of releasing energy from glucose

Question 2

In what cells does respiration occur?

Answer 2

All of them

Question 3

What type of organisms respire?

Answer 3

All of them

Question 4

What is the difference between aerobic and anaerobic respiration?

Answer 4

Aerobic uses oxygen

Question 5

Which is the most efficient way to release energy from glucose?

Answer 5

Aerobic respiration

Question 6

When does aerobic respiration happen?

Answer 6

All of the time

Question 7

Where does most of the reactions in aerobic respiration occur?

Answer 7

Mitochondria

Question 8

What is the word equation for aerobic respiration?

Answer 8

Glucose+Oxygen—->Carbon Dioxide+Water+Energy

Question 9

What are the 4 ways organisms use energy?

Answer 9

Build large molecules from smaller one
Allow muscles to contract for movement (animals)
Maintain Body Temp (mammals and birds)
Build sugars, nitrates and other nutrients into amino acids and then proteins (plants)

Question 10

What happens during physical activity?

Answer 10

Increase speed at which heart pumps

Increase breathing rate and breath deeper

Question 11

Why does blood flow at a faster rate during Excercise?

Answer 11

Glucose and oxygen need to be supplied to muscle cells

Carbon dioxide needs to be removed

Question 12

Why does blood flow at a faster rate during Excercise?

Answer 12

Glucose and oxygen need to be supplied to muscle cells

Carbon dioxide needs to be removed

Question 13

Why does breathing rate increase during exercise?

Answer 13

Higher demand for oxygen

Question 14

What happens to an unfit persons heart rate during exercise?

Answer 14

Goes up more and takes longer to recover

Question 15

What is glycogen?

Answer 15

Stored glucose

Question 16

Where is glycogen stored?

Answer 16

Mainly liver, but each muscle has its own store

Question 17

What happens to glycogen during excercise and why?

Answer 17

Converted to glucose to provide more energy

Question 18

When does the body start doing anaerobic repspiration?

Answer 18

When the body can’t supply enough oxygen to the muscles

Question 19

What is anaerobic respiration?

Answer 19

The incomplete breakdown of glucose

Question 20

What is the word equation for anaerobic respiration?

Answer 20

Glucose —-> Energy + Lactic Acid

Question 21

Why is anaerobic respiration < aerobic respiration?

Answer 21

Lactic acid builds up in muscles (which is painful)
Causes muscle fatigue (stop contracting efficiently)
Does not provide nearly as much energy

Question 22

What is the advantage of anaerobic respiration?

Answer 22

Use muscles for longer

Question 23

What is oxygen debt?

Answer 23

Having to repay the oxygen you didn’t get to muscles in time, because your lungs, heart and blood couldn’t keep up with the demand earlier on

Question 24

Why do you breath hard after excersising?

Answer 24

To get oxygen into blood, so it can oxidise lactic acid in muscles

Question 25

What happens to lactic acid after its oxidised?

Answer 25

Turns into CO2 and water

Question 26

What detects high levels of CO2 and lactic acid in the blood?

Answer 26

The brain