Bio 3 Ch. 7

8. To what does the term grana refer? A. the double membrane of the chloroplast B. a flattened disk or sac in the chloroplast C. a stack of thylakoid membrane structures D. the central fluid-filled space of the chloroplast E. the cytochrome system in the membranes of the thylakoids

A stack of thylakoid membrane structures

Which of the following statements about the Calvin cycle is correct? A. The CO2 is absorbed and reduced to CH2O. B. The CO2 is absorbed and reduced to C2H2O2. C. The CO - is absorbed and reduced to CH2O. D. The CO2 is absorbed and used to form ATP.

The CO2 is absorbed and reduced to CH2O

To what does the term stroma refer? A. the double membrane of the chloroplast B. a flattened disk or sac in the chloroplast C. a stack of thylakoid membrane structures D. the central fluid-filled space of the chloroplast E. the cytochrome system in the membranes of the thylakoids

The central fluid-filled space of the chloroplast

When the stomata in a leaf close during the day, then A. carbon dioxide in the air spaces in the leaf decreases. B. oxygen in the air spaces in the leaf increases. C. C3 plants carry on photorespiration, using O2 and producing PGA and CO2 . D. all photosystems as well as photorespiration come to a halt. E. All choices but the halting of photosystems are correct.

All choices but the halting of photosystems are correct

. C-4 plants A. store carbon dioxide temporarily as oxaloacetate. B. are found in hot dry climates. C. have a net photosynthetic rate two to three times that of C-3 plants. D. All of the choices are correct.

All of the choices are correct

. What organisms are capable of photosynthesis? A. plants only B. plants and algae only C. plants and some bacteria only D. plants, algae, and some bacteria

Plants, algae, and some bacteria

Photorespiration occurs mainly in A. C3 plants. B. C4 plants. C. CAM plants. D. all of the answer choices.

C3 plants

Which of the following pairs is correct? A. C4 plants = bundle sheath cells contain chlorophyll B. C3 plants = bundle sheath cells contain chlorophyll C. CAM plants = epidermal cells that contain chlorophyll D. C4 plants = stoma that contain chlorophyll

C4 plants = bundle sheath cells contain chlorophyll

Which is most closely associated with the Calvin cycle? A. ATP production B. oxygen production C. carbon dioxide fixation D. carbon dioxide production E. removal of electrons from water for passage through an electron transport system

Carbon dioxide fixation

Which of these is NOT a major photosynthetic pigment in plants? A. chlorophyll a B. chlorophyll b C. chlorophyll c D. carotenoid pigments

Chlorophyll C

During the light reactions what structure is responsible for absorbing the solar energy? A. chloroplast B. stroma C. stoma D. bark of the tree

Chloroplast

What structure is required for an eukaryotic organism to be classified as an autotroph? A. chloroplast B. mitochondria C. nucleus D. Golgi Body

Chloroplast

The major enzyme that 'fixes' carbon dioxide is called A. ribulose bisphosphate carboxylase (rubisco). B. glyceraldehyde-3-phosphate (G3P). C. PEP carboxylase (PEPcase). D. lactate dehydrogenase.

Ribulose bisphosphate carboxylase (Rubisco)

The function of sunlight in photosynthesis is to A. reduce NADPH to NADP. B. fix O2 in the Calvin cycle. C. excite electrons in chlorophyll. D. combine carbon dioxide and water to form ATP and NADPH.

Excite the electrons in chlorophyll

Chemiosmotic ATP synthesis occurs in the cytosol of the cell

False

Photorespiration is the process by which light is used to release the stored energy in carbohydrate molecules to perform all work in plant cells

False

The light-dependent reactions of photosynthesis occur in the stroma of the chloroplast

False

A product of photosynthesis, __________, is the chief source of energy for most organisms. A. oxygen B. sucrose C. glucose D. All of the answer choices

Glucose

_______ is a product of the Calvin Cycle that is used to form glucose phosphate, amino acids or fatty acids. A. ATP B. ribulose bisphosphate (RuBP) C. glyceraldehyde-3-phospate (G3P) D. PEP carboxylase (PEPcase) E. carbon dioxide

Glyceraldehyde-3-phospate (G3P)

Which statement is NOT true about the noncyclic electron pathway? A. Electrons are boosted to higher energy level in Photosystem I. B. Sunlight excites electrons in Photosystem II. C. It produces ATP. D. It produces NADPH. E. It produces carbohydrates through carbon dioxide fixation.

It produces carbohydrates through carbon dioxide fixation

If plants were only able to undergo the Calvin cycle, which of the following would NOT be true? A. Plants would not produce oxygen. B. Carbohydrate could still be produced but in much smaller quantities. C. More NADPH would be produced during the cyclic electron pathway. D. ATP production would decrease due to a smaller amount of H + being available.

More NADPH would be produced during the cyclic electron pathway

Protons (H + ) accumulate in the thylakoid space during electron transport between photosystems I and II. The excess of protons in the thylakoid space A. enters the photorespiration pathway. B. converts NADP to NADPH and generates ATP in the process. C. is small enough to diffuse back out through the lipid bilayer. D. raises the pH of the space until the processes stop. E. moves from the thylakoid space to the stroma through an ATP synthase complex channel that generates ATP.

Moves from the thylakoid space to the stroma through an ATP synthase complex channel that generates ATP

. G3P (glyceraldehyde 3 phosphate) is used by plants for all of the following EXCEPT the formation of A. fatty acids. B. amino acids. C. oxygen. D. sucrose.

Oxygen

What are the end products of photosynthesis? A. water and carbon dioxide B. water and oxygen C. oxygen and carbohydrate D. carbohydrate and water

Oxygen and carbohydrate

Which statement is NOT true about photosystems? ev: 11_0_2012 A. Photosystem I passes electrons on to Photosystem II. B. Each photosystem contains numerous pigment molecules that act as antennas to capture light. C. Photosystem II contains a reaction center molecule that loses electrons which are then replaced by electrons from water. D. Electrons in the reaction center molecule are excited by absorbed solar energy and are passed along to an acceptor molecule.

Photosystem 1 passes electrons on to photosystem 2

Oxygen production in photosynthesis involves all of the following EXCEPT 22013 A. photosystem one. B. photosystem two. C. splitting of water. D. light reactions.

Photosystem one

Which of the following plants is an example of a CAM plant? A. pineapple B. corn C. rice D. wheat E. oak tree

Pineapple

What is the ultimate destination for the energized electrons during the light reactions of photosynthesis? A. they are taken up by NADP + to produce NADPH B. they are taken up by NADPH to produce NADP + C. they are taken up by NADH to produce NAD + D. they are taken up by NAD + to produce NADH

They are taken up by NADP + to produce NADPH

Why are plants green? A. They absorb only green wavelengths of light. B. They absorb only yellow and blue wavelengths of light. C. They reflect nearly all wavelengths of light. D. They reflect green wavelengths of light and absorb blue and red light. E. They reflect yellow and blue wavelengths of light.

They reflect green wavelengths and absorb blue and red light

Fossil fuels are full of energy stored from photosynthesis millions of years ago

True

Plants that conduct C-4 metabolism are desert plants.

True