Quiz 34

Question 1

Where in a eukaryotic cell does anaerobic respiration occur?

Answer 1

Cytoplasm

Question 2

Where in a eukaryotic cell does aerobic respiration occur?

Answer 2

Mitochondria

Question 3

Which type of respiration releases more energy, aerobic or anaerobic?

Answer 3

Aerobic respiration

Question 4

Define anaerobic respiration

Answer 4

Respiration that can occur in the absence of oxygen

Question 5

Give 2 ways humans use the products of fermentation in yeast

Answer 5

Making beer and making bread

Question 6

Write the word equation for anaerobic respiration in animals

Answer 6

Glucose—> lactic acid

Question 7

Why is glucose important for respiration?

Answer 7

It contains stored energy which is released during respiration

Question 8

Define respiration

Answer 8

A chemical reaction which releases energy from glucose

Question 9

Write the word equation for anaerobic respiration in plants and fungi

Answer 9

Glucose——> ethanol + carbons dioxide

Question 10

What is anaerobic respiration in yeast known as?

Answer 10

Fermentation

Question 11

Describe and explain the changes to breathing rate, breath volume and heart rate when a person exercises

Answer 11

Breathing rate and breath volume increase to allow more oxygen to enter the blood and to remove more carbon dioxide. Heart rate increases to supply muscles with more oxygenated blood and to remove more carbon dioxide from respiring muscle cells

Question 12

Where in a prokaryotic cell does respiration occur?

Answer 12

Cytoplasm

Question 13

Give 3 reasons why organisms need energy

Answer 13

For chemical reactions to build larger molecules, for movement, to keep warm

Question 14

Is respiration an endothermic or exothermic process? Explain

Answer 14

Exothermic because it releases energy

Question 15

What happens to the lactic acid that is built up in muscles during vigorous or prolonged excercise?

Answer 15

Blood flowing through the muscles transports the lactic acid to the liver where it is converted back into glucose

Question 16

Define photosynthesis

Answer 16

The process by which plants make glucose using energy from sunlight

Question 17

Write the balanced symbol equation for aerobic respiration

Answer 17

C6H12O6 + 6O2 —-> 6H2O + 6CO2

Question 18

What happens if there is an insufficient supply of oxygen to muscles during excercise?

Answer 18

Anaerobic respiration takes place in muscles. The incomplete oxidation of glucose causes a build up of lactic acid and creates an oxygen debt. During long period’s of vigorous activity muscles become fatigued and stop contracting efficiently

Question 21

Write the word equation for aerobic respiration

Answer 21

Glucose + oxygen —-> water + carbon dioxide

Question 22

Define oxygen debt

Answer 22

The amount of extra oxygen the body needs after exercise to react with the accumulated lactic acid and remove it from the cells

Question 23

Define aerobic respiration

Answer 23

Respiration that requires the presence of oxygen