UNIT 2: Key area 2 - cellular respiration

Question 1

Describe the role which ATP plays in the transfer of energy

Answer 1

Energy is released from ATP when the end phosphate is removed
One ATP has released energy it becomes ADP which is a low energy molecule

Question 2

What is cellular respiration

Answer 2

The breakdown of glucose and other respiratory substrates make energy carrying molecules (ATP)

Question 3

What is ATP

Answer 3

Transfer energy to cellular process which require energy

Question 4

What is the main substrate within the respiration pathway

Answer 4

Glucose

Question 5

Glucose is what in terms of metabolic pathways of cellular respiration

Answer 5

main substrate within the respiration pathway

Question 6

Name the three metabolic pathways involved in respiration

Answer 6

Glycolysis
Citric acid cycle
Electron transport chain

Question 7

What occurs in the cytoplasm

Answer 7

Glycolysis

Question 8

Where does glycolysis occur

Answer 8

Cytoplasm

Question 9

What occurs in the matrix of the mitochondria

Answer 9

Citric acid cycle

Question 10

Where does the citric acid cycle occur

Answer 10

Matrix of mitochondria

Question 11

Electron transport chain where does this occur

Answer 11

Inner membrane of mitochondria

Question 12

Electron transport chain where does this occur

Answer 12

Inner montane of mitochondria

Question 13

What occurs in the inner membrane of mitochondria

Answer 13

Electron transport chain

Question 14

What is glycolysis

Answer 14

Breakdown of glucose into two pyruvate molecules in the cytoplasm

Question 15

Does glycolysis require oxygen

Answer 15

No

Question 16

The production of pyruvate from glucose involves what ?

Answer 16

Production of several intermediate molecules

Question 17

What is required for glycolysis

Answer 17

2 ATP

Question 18

Break down of glucose into pyruvate results in what

Answer 18

Nat gain of 2 ATP

Question 19

Dehydrogenase enzymes remove hydrogen ions and electrons from intermediates of this cycle
Which are passed to ?

Answer 19

Coenzyme NAD

Question 20

Dehydrogenase enzymes remove what ?

Answer 20

Hydrogen ions and electrons from intermediates of this circle

Question 21

What is reduced during glycolysis

Answer 21

2NADH

Question 22

What happens after glycolysis if oxygen is available

Answer 22

Pyruvate molecules progress into the citric acid cycle

Question 23

What happens after
Glycolysis if no oxygen is available

Answer 23

Pyruvate undergoes fermentation

Question 24

What is the first stage in glycolsis called

Answer 24

Energy investment phase