ch 5 bio quiz

What are the products of photosynthesis? a) oxygen and carbohydrate b) carbohydrate and water c) water and carbon dioxide d) water and oxygen e) carbon dioxide and carbohydrate

a) oxygen and carbohydrate

In the Calvin cycle, the three-carbon molecule that will be immediately formed after carbon dioxide fixation occurs is a) glucose. b) G3P. c) 3-PGA. d) PS I. e) RuBP.

c) 3-PGA.

The "antenna" system of a plant that gathers the solar energy consists of a) the ATP synthase complex. b) the pigment complex, or photosystem. c) the grana. d) the epidermal cells of the leaf. e) the hydrogen ions (H+)

b) the pigment complex, or photosystem.

Which of the following organisms do not have a dependence on photosynthesis for their energy? a) white-tailed deer b) raccoons c) All of the answer choices will have a dependency on photosynthesis. d) squirrels e) wolves

c) All of the answer choices will have a dependency on photosynthesis.

Which statement about producers (= autotrophs) and/or consumers (= heterotrophs) is true? a) Only one species of producer and consumer can exist in any single community. b) All animals must be either producers or consumers. c) Producers produce more food than they use. d) Consumers not only feed themselves but also feed producers. e) Consumers are not dependent upon other organisms for food.

c) Producers produce more food than they use.

Why are plant leaves green? a) They reflect yellow and blue wavelengths of light. b) They absorb only green wavelengths of light. c) They reflect green wavelengths of light. d) They absorb only yellow and blue wavelengths of light. e) They reflect nearly all wavelengths of light.

c) They reflect green wavelengths of light.

Plants produce oxygen when they photosynthesize. Where does the oxygen come from? a) the electron transport chain b) ATP synthesis c) splitting water molecules d) chlorophyll

c) splitting water molecules

At the cellular level, photosynthesis occurs within a) all plant cell organelles. b) the cristae of the mitochondria. c) the chloroplast. d) both chloroplasts and mitochondria. e) the nucleus of plants but not of animals

c) the chloroplast.

How many membranes does a chloroplast have? a) four b) two c) three d) five e) one

c) three

Which molecule would you need to radioactively label in order to produce radioactive oxygen during photosynthesis? a) G3P b) carbon dioxide c) water d) glucose e) cytochrome

c) water

Which of the following is NOT a characteristic shared by cellular respiration and photosynthesis? a) Both processes use an electron transport chain located in membranes of organelles. b) Both processes produce ATP by chemiosmosis. c) One or more electron carriers are used in both processes. d) Both photosynthesis and cellular respiration occur in plant cells. e) Both processes produce oxygen.

e) Both processes produce oxygen.

What is the value of photosynthesis to humans? a) It will reduce the amount of methane in the atmosphere. b) It results in the production of proteins and oxygen. c) It results in the production of fatty acids and oxygen. d) It will convert carbohydrates into usable forms of energy for humans. e) It will reduce the amount of carbon dioxide in the atmosphere.

e) It will reduce the amount of carbon dioxide in the atmosphere.

To what does the term granum (plural = grana) refer? a) the double membrane of the chloroplast b) the cytochrome system in the membranes of the thylakoids c) the central fluid-filled space of the chloroplast d) a flattened disk or sac in the chloroplast e) a stack of thylakoid membrane structures

e) a stack of thylakoid membrane structures

The raw materials (or reactants) of the photosynthetic process include a) glucose and oxygen. b) carbon dioxide and oxygen. c) glucose and water. d) carbon dioxide and glucose. e) carbon dioxide and water.

e) carbon dioxide and water.

Which statement correctly describes carbon fixation? a) the use of ATP and NADPH to reduce CO2 b) the formation of RuBP from G3p molecules c) the use of RuBisCO to form 3-PGA d) the production of carbohydrate molecules from G3P e) the conversion of CO2 to an organic compound

e) the conversion of CO2 to an organic compound

The reservoir for hydrogen ions for chemiosmotic ATP synthesis during photosynthesis is the a) cytoplasm. b) stroma. c) thylakoid membrane. d) matrix. e) thylakoid space.

e) thylakoid space.

How many total carbons are involved in carbon dioxide fixation with 3 molecules of carbon dioxide and 3 molecules of RuBP? a) 18 b) 24 c) 12 d) 30 e) 6

a) 18

Which of the following statements comparing the ATP synthase complex in cellular respiration and photosynthesis is not true? a) Both require the movement of H+ from inside a compartment to outside of the compartment. b) Both work via chemiosmosis. c) Both produce ATP. d) Both require a H+ gradient. e) Both are located in a membrane.

a) Both require the movement of H+ from inside a compartment to outside of the compartment.

Which of the following statements is false? a) During photosynthesis, oxygen is used. b) During photosynthesis, carbon dioxide is used. c) During cellular respiration, mitochondria release carbon dioxide. d) During cellular respiration, carbohydrate energy is converted into ATP. e) During photosynthesis, energy from the sun is used to form carbohydrates.

a) During photosynthesis, oxygen is used.

In the process of photosynthesis, the light reactions follow the Calvin cycle reactions. a) False b) True

a) False

Only organisms with chloroplasts are capable of photosynthesis. a) False b) True

a) False

At the base of most food chains are autotrophs. a) True b) False

a) True

Visible light has more energy than radio waves. a) True b) False

a) True

What is the energy of a photon first used to do in photosynthesis? a) energize an electron b) synthesize glucose c) produce ATP d) split a water molecule

a) energize an electron

Which of the following is not an autotroph? a) yeast b) oak tree c) cyanobacterium d) algae e) grass

a) yeast

Some herbicides inhibit the electron transport chain in the thylakoid membrane. Without the movement of electrons, hydrogen ions would not be pumped from the stroma to the thylakoid space and the hydrogen ion gradient would not be established. How would this affect the Calvin cycle reactions? a) Sunlight could no longer be used by the chloroplast, but this would have no effect on the Calvin cycle reactions because they do not require light. b) ATP would not be produced and, as a result, the Calvin cycle reactions would not occur. c) Since the Calvin cycle reactions occur in a different part of the chloroplast, there would be no effect. d) RuBP carboxylase would not function properly, so CO2 fixation would not occur. e) CO2 would not enter the cell as a result, and the Calvin cycle reactions would not occur.

b) ATP would not be produced and, as a result, the Calvin cycle reactions would not occur.

Which of the following is a substrate in the photosynthesis equation? a) O2 b) CO2 c) C6H12O6 d) H2

b) CO2

Which part of photosynthesis does not occur inside the thylakoid membrane? a) light reactions b) Calvin cycle reactions c) electron transport chain

b) Calvin cycle reactions

At night, plants cannot run metabolic pathways because there is no sunlight. a) True b) False

b) False

There is an inverse relationship between wavelength of light and amount of energy. a) False b) True

b) True

Which molecule absorbs the energy of a photon in photosynthesis? a) glucose b) chlorophyll c) ATP d) water

b) chlorophyll

Which two organelles are most directly involved in the flow of energy from the sun through all living things? a) Golgi apparatus and mitochondria b) chloroplasts and mitochondria c) lysosomes and chloroplasts d) ribosomes and Golgi apparatus e) mitochondria and ribosomes

b) chloroplasts and mitochondria

Which color(s) of light does chlorophyll a reflect? a) red and blue b) green c) red d) blue

b) green

What are the two sets of reactions for photosynthesis? a) electron transport chain, light reactions b) light reactions, Calvin cycle reactions c) Calvin cycle reactions, citric acid cycle d) glycolysis, citric acid cycle e) light reactions, glycolysis

b) light reactions, Calvin cycle reactions

Where in plant cells does the Calvin cycle take place? a) thylakoid membrane b) stroma c) thylakoid space d) granum

b) stroma

What does the term stroma refer to? a) a flattened disk or sac in the chloroplast b) the central fluid-filled space of the chloroplast c) the double membrane of the chloroplast d) the cytochrome system in the membranes of the thylakoids e) a stack of thylakoid membrane structures

b) the central fluid-filled space of the chloroplast

NADPH and ATP are used in the a) light reactions. b) electron transport chain. c) citric acid cycle. d) Calvin cycle reactions.

d) Calvin cycle reactions.

What is the molecule that leaves the Calvic cycle to be converted into glucose? a) 3-PGA b) ADP c) RuBP d) G3P

d) G3P

Which cofactor is involved in the Calvin cycle reactions? a) NAD+ b) both NAD+ and FAD c) both FAD and NADP+ d) NADP+ e) FAD

d) NADP+

Which of these is most closely associated with the process of electron transport? a) the central fluid-filled space of the chloroplast b) a stack of thylakoid membrane structures c) the double membrane of the chloroplast d) a sequence of molecules in the membranes of the thylakoids e) a flattened disk or sac in the chloroplast

d) a sequence of molecules in the membranes of the thylakoids

The main function of stomata is to a) transport water to the chlorophyll. b) expose the chlorophyll to sunlight. c) store glucose. d) allow passage of CO2 and O2 into the leaf. e) store pyruvate and provide the site of the Calvin cycle.

d) allow passage of CO2 and O2 into the leaf.

Heterotrophs a) None of the answer choices is characteristic of heterotrophs. b) are also called autotrophs. c) have the ability to synthesize organic molecules from inorganic molecules. d) are ultimately dependent upon preformed organic molecules made by autotrophs. e) are the origin of all food for the rest of the living world.

d) are ultimately dependent upon preformed organic molecules made by autotrophs.

The Calvin cycle reactions are dependent upon a supply of a) oxygen and carbon dioxide. b) glucose and carbon dioxide. c) water and carbon dioxide. d) carbon dioxide, NADPH, and ATP. e) carbon dioxide and NADPH.

d) carbon dioxide, NADPH, and ATP.

The substance that initially traps solar energy in photosynthesis is a) water. b) glucose. c) RuBP. d) chlorophyll. e) pyruvate.

d) chlorophyll.

Which pathway is the foundation for the majority of ecosystems and food chains on Earth? a) decomposition b) anaerobic respiration c) chemosynthesis d) photosynthesis e) aerobic respiration

d) photosynthesis

Which of the following allows photosynthetic organisms to capture solar energy? a) NAD+ b) nucleus c) glucose d) pigments e) ribosomes

d) pigments

The formation of carbohydrate occurs within the a) inner chloroplast membrane. b) thylakoid membranes. c) outer chloroplast membrane. d) stroma. e) thylakoid space.

d) stroma

Water is split and oxygen is released in a) photosystem I. b) the cyclic electron pathway. c) the Calvin cycle reactions. d) the light-dependent reactions. e) the electron transport chain.

d) the light-dependent reactions.