Exam III

Question 1

What does light excites in photosintetic pigments?

Answer 1

Electrons

Question 2

Chlorophyll A absorbs which color of colors of light?

Answer 2

red and violet

Question 3

In Engleman’s 1882 experiment, why did bacteria cluster in red or violet bands of the rainbow?

Answer 3

Algae photosynthesis best at those wavelengths, producing needed oxygen for the bacteria

Question 4

What do plants need to carry out photosynthesis?

Answer 4

CO2 and H2O

Question 5

The products of the light dependent reactions of photosynthesis includes:

Answer 5

ATP, NADPH, and O2

Question 6

The light dependent reactions occur here:

Answer 6

the thylakoid membrane

Question 7

The products of light independent reactions of photosynthesis are:

Answer 7

ADP, NADP+, and Glucose

Question 8

The light independent reactions occur here:

Answer 8

The stroma

Question 9

The plant cells are capable of:

Answer 9

photosynthesis, glucose breakdown, aerobic respiration, and both photosynthesis and glucose breakdown

Question 10

When molecules are broken apart in respiration, the energy released is:

Answer 10

is channeled into molecules of ATP

Question 11

The correct sequence for the respiration process is:

Answer 11

glycolysis then Krebs and finally electron transfe

Question 12

The greatest number of ATP molecule is produced in:

Answer 12

aerobic electron transfer.

Question 13

Glycolysis depends on a continuous supply of:

Answer 13

NAD+

Question 14

What is necessary for glycolysis to begin?

Answer 14

an input of energy from ATP

Question 15

Glycolysis results in:

Answer 15

production of pyruvate and occurs in the cytoplasm

Question 16

How many ATP molecules( NET yield) are produced per molecule of glucose degraded during glycolysis?

Answer 16

two

Question 17

The Krebs cycle takes place in the:

Answer 17

mitochondria

Question 18

The breakdown of pyruvate in the Krebs cycle results in the release of:

Answer 18

energy and carbon dioxide

Question 19

To breakdown a glucose molecule completely requires how many passes through the Krebs cycle?

Answer 19

2

Question 20

Which process is a transition from glycolysis to the Krebs cycle?

Answer 20

acetyl CoA formation

Question 21

When glucose is used as the energy source, the largest amount of ATP is produced is in:

Answer 21

Electron Transfer Phosphorylation

Question 22

During Electron Transfer Phosphorylation, which ion accumulates in the outer compartment of the mitochondria?

Answer 22

hydrogen

Question 23

The ultimate electron acceptor in aerobic respiration is:

Answer 23

O2

Question 24

Hydrogen ions diffuse from the outer to inner compartment of the mitochondria through what molecule?

Answer 24

ATP synthase

Question 25

How many ATP’s form during the 3rd stage of aerobic respiration?

Answer 25

32

Question 26

Yeast fermentation produces

Answer 26

ethanol and CO2

Question 27

under anaerobic conditions, muscle cells produce:

Answer 27

lactate

Question 28

If fermentation follows glycolysis then:

Answer 28

the two NADH molecules produced during glycolysis will be used to reduce pyruvate to either lactate or ethanol and CO2

Question 29

Fermentation pathways make no more ATP beyond the small yield from glycolysis. The remaining reactions serve to regenerate:

Answer 29

NAD+

Question 30

Excess glucose in the human diet can result in the accumulation of:

Answer 30

Fat

Question 31

Glucagon prompts what organs to convert glycogen to glucose?

Answer 31

Liver

Question 32

When fats are broken down as energy sources, their components enter:

Answer 32

glycolysis and the Krebs cycle

Question 33

When proteins are used as energy sources, their breakdown subunits usually enter:

Answer 33

the Krebs cycle