Respiration and enzymes

Question 1

What is the word equation for Aerobic respiration?

Answer 1

glucose + oxygen -> carbon dioxide + water

Question 2

What is the balanced chemical equation for Aerobic respiration?

Answer 2

C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP

Question 3

What is ATP?

Answer 3

Energy is created in this form

Question 4

What is respiration?

Answer 4

The process used to create energy from glucose in the form ATP

Question 5

What does the bloodstream do?

Answer 5

Transports glucose and oxygen to the cells and takes by-products away

Question 6

What is one of the main reasons our bodies need food?

Answer 6

For glucose, which is used to create energy through respiration

Question 7

Is respiration a physical reaction?

Answer 7

No - is a chemical reaction

Question 8

What can the rate of respiration be affected by?

Answer 8

Availability of oxygen (reactant)
Temperature & pH (enzymes)
Availability of substrates (glucose)

Question 9

How can we measure the rate of carbon dioxide produced?

Answer 9

Do the volume of CO2 divided by the time taken

Question 10

Where does aerobic respiration occur?

Answer 10

Mitochondria

Question 11

Where does anaerobic respiration occur?

Answer 11

Cytoplasm

Question 12

When is anaerobic respiration used?

Answer 12

When there is an oxygen deficit

Question 13

What is a product of anaerobic respiration that causes aches?

Answer 13

Lactic acid

Question 14

What is a conclusion paragraphs spilt into?

Answer 14

Description (of data)
Explanation (of why data has occurred)

Question 15

What are enzymes made from?

Answer 15

Proteins

Question 16

What are substrates made from?

Answer 16

Glucose

Question 17

What is the name of the place on enzymes where substrates bind to?

Answer 17

Active site

Question 18

What is created when substrates bond to the active site?

Answer 18

Enzyme-substrate complex

Question 19

What happens after substrate binds to active site?

Answer 19

Substrates is broken down into products. Enzyme can be re-used

Question 20

What happens when enzymes go past their optimal temperature?

Answer 20

They permanently denature and don’t bind with substrates well as they change shape

Question 21

What are enzymes?

Answer 21

Biological catalysts

Question 22

How is lactic acid removed during recovery?

Answer 22

Aerobic respiration of lactic acid in the liver

Question 23

True or false: aerobic respiration produces three times as much carbon dioxide as an aerobic respiration from one molecule of glucose?

Answer 23

True

Question 24

What do anaerobic and aerobic respiration do?

Answer 24

They break down glucose and produce energy

Question 25

How many molecules of oxygen are required for the anaerobic respiration of three molecules of glucose?

Answer 25

18

Question 26

What controls the speed of chemical reactions in all living cells?

Answer 26

Enzymes

Question 27

At which temperature do most enzymes from the human body become completely denatured?

Answer 27

65°C

Question 28

What analogy can be used to describe how enzymes and substrates work together?

Answer 28

The lock and key theory

Question 29

What factors can affect the rate of reaction?

Answer 29

Temperature pH Enzyme concentration Substrate concentration

Question 30

What is the word equation for anaerobic respiration in humans?

Answer 30

glucose → lactic acid + energy released

Question 31

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

Answer 31

glucose → ethanol + carbon dioxide + energy released

Question 32

What are the waste products of aerobic respiration?

Answer 32

Carbon dioxide Water

Question 33

What is the chemical equation for anaerobic respiration in yeast?

Answer 33

C6H12O6 —> 2C2H5OH + 2CO2

Question 34

Starch is digested by analyse in the mouth, but it is not digested in the stomach. Why is this?

Answer 34

Because the pH in the stomach is not suitable for the analyse to work

Question 35

What experiments can be done to test the effect of temperature on enzymes?

Answer 35

Investigating the effect of temperature on the activity of lipase/trypsin

Question 36

What experiments can be done to test the effect of pH on enzymes?

Answer 36

The effect of pH on the activity of Trypsin

Question 37

Which type of respiration produces more energy?

Answer 37

Aerobic respiration