B4 Aerobic and Anaerobic Respiration (page 55)

Question 1

There are two types of Respiration, what are they?

Answer 1

Aerobic and Anaerobic Respiration

Question 2

What is Aerobic Respiration?

Answer 2

it is respiration using Oxygen. It’s the most efficient way to transfer energy from glucose.

Question 3

Where does Aerobic Respiration go on all the time?

Answer 3

it goes on all the time in plants and animals

Question 4

Where does most of the reactions in aerobic respiration happen?

Answer 4

inside mitochondria (see page 11).

Question 5

What is the word equation for aerobic respiration?

Answer 5

glucose + oxygen &raquo_space;» carbon dioxide + water

Question 6

What is the symbol equations for aerobic respiration?

Answer 6

C6H12O6 + 6O2 &raquo_space;» 6CO2 + 6H20

Question 7

What is Anaerobic Respiration?

Answer 7

its means without oxygen.

Question 8

Anaerobic Respiration is used if what?

Answer 8

if there’s not enough oxygen

Question 9

What happes when you do vigorous exercise and your body can’t supply enough oxygen to your muscles?

Answer 9

they start doing anaerobic respiration as well as aerobic respiration

Question 10

Anaerobic just means without oxygen, explain this further?

Answer 10

it’s the incomplete breakdown of glucose, making lactic acid.

Question 11

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

Answer 11

glucose&raquo_space;»»»»> lactic acid

Question 12

Anaerobic respiration does not transfer nearly as much energy as aerobic respiration, explain what this is?

Answer 12

This is because glucose isn’t fully oxidised (because it doesn’t combine with oxygen).

Question 13

Anaerobic respiration is only useful in emergencies, give example?

Answer 13

during exercise when it allows you to keep on using your muscles for a while longer

Question 14

Can Plants and Yeast Cells respire without oxygen and why?

Answer 14

yes, but they produce ethanol (alcohol) and carbon dioxide instead of lactic acid

Question 15

What is the word equation for anaerobic respiration in plants and yeast cells?

Answer 15

glucose&raquo_space;»»> ethanol + carbon dioxide

Question 16

What is Yeast?

Answer 16

they are single-celled organisms

Question 17

What is the Anaerobic Respiration in yeast cells called?

Answer 17

Fermentation

Question 18

Why is Fermentation by yeast of great value in the food and drinks industry?

Answer 18

because it’s used to make bread and alcoholic drinks, e.g. beer and wine.

Question 19

What makes the bread rise in bread-making?

Answer 19

its the carbon dioxide from fermentation that makes bread rise

Question 20

In beer and wine-making, what is the process that produces alcohol?

Answer 20

its the fermentation process that produces alcohol.

Question 21

Fermentation is a really important process why?

Answer 21

because of its use in making alcoholic drinks and bread. We drink and eat so much of these that making them is big bucks. And its all down to tiny yeast cells.

Question 22

What are the reactants of aerobic respiration? (2 marks)

Answer 22

Glucose (1 mark) and Oxygen (1 mark)

Question 23

What is the process of anaerobic respiration in yeast called? (1 mark)

Answer 23

Fermentation (1 mark)