Respiration

Question 1

What is respiration

Answer 1

The transferring of energy from glucose to every cell

Question 2

Name three things respiration is used for

Answer 2

To build up larger molecules from smaller ones
Muscles to contract
Regulate body temp

Question 3

In a cell what are chemical reactions controlled by

Answer 3

Enzymes

Question 4

Name three large molecules that are made from smaller ones

Answer 4

• small glucose molecules are joined together to make start
• lipid molecules are made from one molecule of glycerol and three fatty acids
• glucose is combined with nitrate ions to make amino acids then proteins

Question 5

Larger molecules are broken down into smaller ones.

Why is glucose broken down

Answer 5

For respiration as respiration transfers energy to power all reactions in the body that makes molecules

Question 6

Large molecules are broken down into smaller ones

Why is protein broken down

Answer 6

It’s broken down to produce urea so it can be excreted

Question 7

What is metabolism

Answer 7

The sum of all reactions that happen in a cell or the body

Question 8

Aerobic respiration uses…

Answer 8

Oxygen

Question 9

Where does aerobic respiration take place

Answer 9

Mitochondria

Question 10

Give the symbol and word equation for AEROBIC respiration

Answer 10

Glucose + oxygen ➡️ carbon dioxide + water

C6H12O6 + 6O2 ➡️ 6CO2 + 6H2O

Question 11

What is ANAEROBIC RESPIRATION

Answer 11

• without oxygen

- incomplete breakdown of glucose

Question 12

What does Anaerobic respiration produce

Answer 12

Latic acid

Question 13

Why doesn’t anaerobic respiration produce enough energy

Answer 13

He glucose is not fully oxidised

Question 14

What is the word equation for ANAEROBIC respiration

Answer 14

Glucose➡️Latic acid

Question 15

Plant and yeast cells can respire…

Answer 15

Without oxygen

Question 16

What is produced from respiration in yeast and plant cells

Answer 16

Ethanol and carbon dioxide

Question 17

Fermentation is…

Answer 17

Respiration in yeast cells

Question 18

What is the word equation for respiration in yeast and plant cells

Answer 18

Glucose➡️ ethanol + carbon dioxide

Question 19

What is respiration in plants and yeast cells used for in the drinks and food industry

Answer 19

Ethanol makes alcohol

Carbon dioxide makes bread rise

Question 20

Why do you respire more when you exercise

Answer 20

• muscles need energy to contract
• they contract more frequently in exercise
• breathing rate and breath volume increases to get more oxygen in the blood
• the heart rate increases to get more oxygenated blood around the body
• this removes carbon dioxide more quickly

Question 21

What is oxygen debt

Answer 21

• when you have to “repay” the oxygen that you didn’t get to your muscles in time
• this is because the lungs heart and blood could not keep up with the demand earlier

Question 22

Why do you breathe harder in oxygen debt

Answer 22

-to get more oxygen into the blood to be transported to the muscle cells

Question 23

What is your pulse and breathing rate like during oxygen debt and why

Answer 23

Huh because the high levels of Latic acid and carbon dioxide

Question 24

How does the body cope with high levels of Latic acid

Answer 24

Transports it to the liver to get converted back to glucose