Ch.6 Pathways of Photosynthesis

Which component of white light is least necessary for photosynthesis?
A. Red B. Orange C. Green D. Blue E. Yellow

Which of the following statements is not true of autotrophs?
A. They must take in organic matter to make energy.
B. They produce their own food.
C. Plants are autotrophs.
D. They convert light energy into chemical energy.
E. Cyanobacteria are autotrophs.

A biologist wants to study heterotrophs. what would he or she be most interested in studying?
A. Producers
B. Autotrophs
C. Plants
D. Algae
E. Consumers

which of the following organisms uses organic molecules produced by photosynthesis?
A. Autotrophs only
B. Heterotrophs only
C. Heterotrophs and autotrophs
D. Only plants and algae
E. Only animals

flattened sacs within the chloroplast are known as A. chlorophyll.
B. stomata.
C. thylakoids.
D. stroma.
E. mesophyll.

what is the significance of the stroma of the chloroplast?
A. It contains metabolic enzymes used to reduce carbon dioxide to carbohydrate.
B. It is where the chlorophyll is stored.
C. It is where oxygen leaves the plant.
D. It helps plants absorb water. E. It is where carbon dioxide enters the leaf.

True or False?
The carbon atoms in the carbohydrate produced by photosynthesis come from carbon dioxide.

what happens if a molecule has been reduced?
A. It has lost electrons.
B. The number of electrons in the molecule has stayed the same.
C. It has lost oxygen.
D. It has gained electrons.
E. It has gained oxygen.

During the process of photosynthesis, which of the following products are formed? A. Carbohydrate and oxygen B. Carbon dioxide and oxygen C. Carbohydrate and water D. Carbohydrate, water, and carbon dioxide
E. Carbohydrate and carbon dioxide

True or False?
Because oxidation and reduction go hand in hand, the entire reaction is called a synthesis reaction.

A biologist is studying the raw materials tat plants use to conduct photosynthesis. what pair of molecules would s/he be studying?
A. Glucose and oxygen B. Carbon dioxide and glucose C. Carbon dioxide and water D. Carbon dioxide and oxygen E. Glucose and water

Which of the following statements is untrue of the light reactions in photosynthesis? A. They need light to work. B. They occur on the surface of the thylakoid membrane. C. They use water and pigment molecules.
D. They occur in the chloroplast.
E. They occur in the stroma of the chloroplast.

Which of the following is reduced as a result of Calvin cycle?
A. Carbon dioxide
B. Oxygen
C. Light
D. Water
E. Glucose

The substance that initially traps solar energy in photosynthesis is? A. chlorophyll.
B. RuBP.
C. water.
D. glucose.
E. pyruvate.

The reason deciduous leave turn red and yellow in fall is: A. Chlorophyll is converted into bright carotenoid pigments. B. When chlorophyll breaks down, the red and yellow pigments which are already present become visible.
C. It is a chemical reaction involving the formation of ice crystals.
D. Bright pigments are shifted up from the roots while chlorophyll moves down.
E. Red and yellow pigments can only be made when temperatures are cool.

True or False?
The reason why most leaves are green is that they absorb the green wavelengths of light.

Which of the following statements about photosynthesis electron transport chain is false?
A. The carriers are membrane-bound.
B. It occurs in the chloroplast.
C. Antenna molecules help move electrons.
D. It produces ATP.
E. ATP synthase complex is used.

Water is split and oxygen is released during which process in photosynthesis?
A. The electron transport chain
B. The cyclic electron pathway
C. The Calvin cycle
D. The light reactions
E. ATP synthesis

Why is water split during photosynthesis?
A. To replace the electron lost in photosystem II
B. To replace the electron lost in the first electron acceptor
C. To replace the electron lost in the second electron acceptor D. To replace the electron lost in photosystem I
E. To replace the electron lost in the electron transport chain

Where do light reactions begin in photosynthesis?
A. The electron transport chain B. Photosystem I
C. The Calvin cycle D. Photosystem II
E. The electron acceptor

If the electron transport chain stopped during photosynthesis what would be the direct result? A. Water would not be split. B. The plant could not absorb light.
C. ATP would not be produced.
D. No electrons would be excited in the photosystem. E. No pigment molecules would be made.

What is/are the end products of light reactions in photosynthesis?
A. ATP only
B. NADP+ and ATP
C. NADP+ and ADP
D. NADPH and ADP
E. NADPH and ATP

Electrons move from photosystem ii to photosystem i via what?
A. The electron transport chain
B. The reaction center
C. The electron acceptors
D. The pigment complexes E. The Calvin cycle

True or False?
The method of turning ADP into ATP is called chemiosmosis because ATP production is tied to a hydrogen ion gradient across a membrane.

A biologist is studying the formation of ATP & NADPH. which part of the cell would s/he be most interested in studying?
A. Chloroplast stroma
B. Outer chloroplast membrane C. Thylakoids
D. Inner chloroplast membrane E. Mitochondria

What would happen if the molecule RuBP no longer functioned in a plant?
A. The electron transport chain would stop.
B. The plant could no longer split water.
C. The plant could no longer absorb light.
D. Carbon dioxide fixation would stop.
E. Pigment production would stop.

The major goal of the Calvin cycle is to produce which of the following?
A. ATP
B. Carbohydrate
C. NADPH
D. RuBP
E. NADP+

Which of the following is not a reaction which occurs during the Calvin cycle?
A. NADPH into NADP+
B. Carbon dioxide reduction
C. Electron transport
D. RuBP regeneration
E. Carbon dioxide fixation

Which of the following is not a molecule involved in the Calvin cycle?
A. Chlorophyll
B. NADPH
C. ATP
D. RuBP
E. G3P

The last step in Calvin cycle is A. carbon dioxide fixation. B. electron transport.
C. carbon dioxide reduction. D. chemiosmosis.
E. RuBP regeneration.

A biologist is studying the formation of carbohydrate during photosynthesis. What part of chloroplast what s/he be studying?
A. The chloroplast stroma
B. The outer chloroplast membrane
C. The inner chloroplast membrane
D. The thylakoid membrane E. The thylakoid space

Calvin cycle is directly dependent upon a supply of

what molecules are directly converted to glucose & other organic molecules

it a student was studying an ecosystem where temp & rainfall are moderate, s/he would most likely find what type of plant?

what effects on C3 plants would ↑ levels of oxygen have?

when carbon dioxide is in limited supply, what type of plants would have the advantage?

statements about C4 plants

most major food plants such as wheat, oats, & rice are in what group?

the main type of Calvin cycle found in flowering succulent plants which live in hot, arid regions would be

the major advantage of the CAM pathway is

Calvin cycle in CAM plants exemplifies the term “light-independent reactions” because

if chlorophyll absorbed green wavelengths of visible light, what color would leaves not appear?

a researcher develops an herbicide that binds to and blocks the action of ATP synthase in the thylakoid membranes. why is this substance lethal to plants?

what would occur if a photosystem contained no antennae molecules?

what would occur if the thylakoid membrane was highly permeable to hydrogen ions?

what has the shortest wavelength?

what is the effect of burning trees on atmospheric levels of carbon dioxide?

what are the end products for cellular respiration?

a biologist is studying the reactants in the overall equation for cellular respiration. s/he would be studying what molecules?