Respiration

Question 1

Where does respiration happen?

Answer 1

In all cells of all living organisms

Question 2

Why do cells need respiration?

Answer 2

To carry out all their activities

Question 3

What are the 2 types of respiration?

Answer 3

Aerobic and anaerobic

Question 4

What is the definition of aerobic respiration?

Answer 4

Respiration in which oxygen combines with glucose (food) to release energy, water and carbon dioxide

Question 5

Aerobic respiration word equation

Answer 5

Glucose + oxygen = energy + water + carbon dioxide

Question 6

Aerobic respiration chemical equation

Answer 6

C6H12O6 + oxygen = energy + 6H2O + 6CO2

Question 7

What processes is aerobic respiration used in?

Answer 7

1. Muscle contractions which enable us to move
2. Growth
3. Production of heat to keep us warm
4. Sending nerve impulses along nerve cells
5. Cell division
6. Cells joining amino acids together to make proteins
7. Transport of substances across cell membranes

Question 8

What is the definition of anaerobic respiration?

Answer 8

Respiration without oxygen

Question 9

Anaerobic respiration word equation

Answer 9

yeast
Glucose ——–> Carbon dioxide + alcohol + energy

Question 10

Differences between aerobic and anaerobic respiration

Answer 10

Aerobic————Anaerobic
-Uses O2…………-Doesn’t use O2
-Lots of energy…….-Less energy
-Makes 6H2O, CO2..-Makes alcohol, CO2

Question 11

What do you call anaerobic respiration which uses yeast?

Answer 11

Fermentation

Question 12

What 2 processes is fermentation used in?

Answer 12

1. Making alcoholic drinks
2. Baking bread and cakes

Question 13

How is yeast used to make alcoholic drinks?

Answer 13

It is used to break down sugar in fruit juice

Question 14

Difference between fizzy and still alcohol

Answer 14

Fizzy=CO2 has been allowed to stay in the bottle still=CO2 has been allowed to escape the bottle

Question 15

Difference between sweet and dry alcohol

Answer 15

sweet=not all the sugar has been broken down dry=all the sugar has been broken down

Question 16

How does bread rise? What happens to the alcohol?

Answer 16

CO2 makes bubbles in the dough, allowing it to rise. The alcohol evaporates in the oven.

Question 17

When does anaerobic respiration in the muscles take place?

Answer 17

When the body needs energy quick, usually during intense exercise

Question 18

Anaerobic respiration in muscles word equation

Answer 18

Glucose——>Lactic acid + energy

Question 19

Lactic acid is toxic, what does it cause in our bodies?

Answer 19

Painful cramps and tiredness

Question 20

What organ breaks lactic acid down and what does it use to break it down?

Answer 20

The liver, it uses O2

Question 21

What is oxygen debt (definition)?

Answer 21

The volume of oxygen needed break down lactic acid in muscles that was produced during anaerobic respiration.