Unit 2: Photosynthesis

Question 1

What does an ATP molecule consist of?

a) A ribose sugar, the amino acid adenine, and 3 equally bonded phosphates
b) A ribose sugar, the nucleic acid adenine, and 3 unequally bonded phosphates
c) A ribose sugar, the nucleic acid adenine, and 3 equally bonded phosphates
d) A deoxyribose sugar, the amino acid adenine, and 3 unequally bonded phosphates

Answer 1

b) A ribose sugar, the nucleic acid adenine, and 3 unequally bonded phosphates

Question 2

What products of the ATP hydrolysis reaction?

a) Adenosine diphosphate, water, and free energy
b) Adenine , an inorganic phosphate, and free energy
c) Adenine, 3 equally bonded phosphates, and free energy
d) Adenosine diphosphate, an inorganic phosphate, and free energy

Answer 2

d) Adenosine diphosphate, an inorganic phosphate, and free energy

Question 3

What is true about NADH?

a) It oxidizes to release protons and electrons
b) It is a carrier for protons and electrons
c) It is the reduced form of the coenzyme NAD+
d) All of the above

Answer 3

d) All of the above

Question 4

What happens when Oxygen Gas changes to form Water?

a) Anabolic reactions occur and Oxygen is oxidized
b) Catabolic reactions occur and Oxygen is reduced
c) Anabolic reactions occur Oxygen is reduced
d) Catabolic reactions occur and Oxygen is oxidized

Answer 4

c) Anabolic reactions occur Oxygen is reduced

Question 5

How does glucose change at the beginning of glycolysis?

a) It changes shape of fructose
b) An atom of oxygen removed
c) A phosphate group is added
d) An atom of oxygen is added

Answer 5

c) A phosphate group is added

Question 6

Predict which of the following participants in the reactions of glycolysis will have the least potential energy.

a) Glyceraldehyde-3-phosphate
b) 3-phosphoglycerate
c) Glucose
d) Pyruvate

Answer 6

d) Pyruvate

Question 7

Which of the following is the final electron acceptor in the electron transport chain in the mitochondria of organisms such as mammals, birds, and fish?

a) Oxygen
b) Enzyme Complex IV
c) Carbon Dioxide
d) Enzyme Complex II

Answer 7

a) Oxygen

Question 8

What is true of the organic molecules that can be used in aerobic cellular respiration?

a) Lipids and proteins can be used, but carbohydrates must be in the form of monosaccharides
b) Carbohydrates and lipids can be used, but nt protein.
c) Only carbohydrates can be used.
d) Carbohydrates, proteins, and lipids can all be used, but enter the cycles at different places.

Answer 8

d) Carbohydrates, proteins, and lipids can all be used, but enter the cycles at different places.

Question 9

Which of the following terms correctly describes you (and other mammals) with respect to your requirements for oxygen?

a) Obligate anaerobe
b) Obligate Aerobe
c) Facultative Aerobe
d) Facultative Anaerobe

Answer 9

b) Obligate Aerobe

Question 10

Match each item with the correct statement:

1) inner mitochondrial matrix
2) mitochondrial matrix
3) cytoplasm
4) intermembrane space

a) site of the citric cycle
b) site of electron transport chain
c) site of maximum proton concentration
d) site of glycolysis

Answer 10

1) inner mitochondrial matrix
b) site of electron transport chain

2) mitochondrial matrix
a) site of the citric cycle

3) cytoplasm
d) site of glycolysis

4) intermembrane space
c) site of maximum proton concentration

Question 11

Where would you expect to find most chlorplasts?

a) in the upper epidermis
b) palisade mesophyll
c) spongy mesophyll tissues only
d) guard cell

Answer 11

b) palisade mesophyll

Question 12

What is true about chlorophyll a?

a) It is contained photosystem I, but not photosystem II
b) It is contained photosystem II, but not photosystem I
c) It is the primary electron acceptor
d) It absorbs light energy at wavelengths of approximately 600nm and 900nm

Answer 12

c) It is the primary electron acceptor

Question 13

Which of these best describes the action of chlorophyll b?

a) It is contained photosystem I, but not photosystem II
b) It absorbs light energy at wavelengths of approximately 400nm and 700nm
c) It is an accessory pigment, and contained within an antenna complex
d) It is contained photosystem II, but not photosystem I

Answer 13

c) It is an accessory pigment, and contained within an antenna complex

Question 14

How is the production of ATP in the chloroplast by the transfer of electrons and protons, but without the formation of NADH or Oxygen described?

a) Cyclic Cycle
b) Non-Cyclic Cycle
c) Light Independant Reactions
d) Light Dependant Reactions

Answer 14

a) Cyclic Cycle

Question 15

What is the product of carbon fixation during photosynthesis?

a) NADPH
b) ATP
c) G3P
d) Oxygen

Answer 15

c) G3P

Question 16

What is true of CAM plants?

a) Carbon fixation and the light-independant reactions do not occur at the same time of day
b) They are often desert plants
c) The carbon dioxide is fixed to produce malate
d) All of the above

Answer 16

d) All of the above