B1.3 Respiration

Question 1

What is your metabolic rate?

Answer 1

Chemical reactions in your cells transfer energy from its chemical stores and food. At which this happens is your metabolic rate.

Question 2

What enzyme breaks down starch

Answer 2

Amylase

Question 3

Which acids form protiens?

Answer 3

Amino acids

Question 4

Which enzyme breaks down protein and what does it turn it into?

Answer 4

Protease

Amino acid

Question 5

What are lipids used for?

Answer 5

A good store of energy
Insulation
Buoyancy

Question 6

Where does your energy come from?

Answer 6

Chemical stores in food

Question 7

What is the formula for aerobic respiration?

Answer 7

Glucose +Oxygen ———> Carbon dioxide + water

Question 8

What is ATP?

Answer 8

The reaction transfers energy from its chemical energy store and glucose to another chemical energy store for all processes in the cell.

It is an energy store

Question 9

ATP produced during respiration is used……

Answer 9

To synthesise larger molecules from smaller ones to make new cell material

For movement : animals in the ATP to contract the muscle cells enabling the organism to move

To stay warm

Question 10

Respiration is an exothermic or endothermic reaction? Explain why

Answer 10

Exothermic as Energy is transferred to the surroundings by heating

Question 11

How do cramps and stitches occur?

Answer 11

When lactic acidosis builds up

this substance is formed when your body has to respire without oxygen

Question 11

How do cramps and stitches occur?

Answer 11

When lactic acidosis builds up

this substance is formed when your body has to respire without oxygen

Question 12

What does anaerobic respiration do?

Answer 12

Allows the body to transfer extra energy for a short period of time

Question 12

What does anaerobic respiration do?

Answer 12

Allows the body to transfer extra energy for a short period of time

Question 13

What is the word equation for anaerobic respiration?

Answer 13

Glucose ——> lactic acid

Question 14

What are the two reasons our bodies normally respire aerobically?

Answer 14

Aerobic respiration produces more ATP molecules per glucose molecule then anaerobic respiration produces .it has a greater yield .this is because the glucose molecule is fully broken down

The lactic acid produces from anaerobic respiration can cause cramp .when lactic acid buildup in the muscle cells it causes pain in the muscle stop contracting. this is known as fatigue

Question 15

What is oxygen debt?

Answer 15

When you have finished exercising you keep on breathing heavily. the extra oxygen you inhale reacts with the lactic acid breaking it down.

Question 16

Where else does anaerobic respiration take place?

Answer 16

In plant cells and microorganisms

Question 17

What is fermentation?

Answer 17

Anaerobic respiration in micro organisms on the plant cells ethanol and carbon dioxide instead of lactic acid

Question 18

What is the word and balanced symbol equation for fermentation

Answer 18

Glucose ——>  ethanol + carbon dioxide

C6 H12 O6 ———> 2C2 H5 O H + 2CO2