quiz 9

Question 1

When a photon is absorbed by a pigment, the energy of the photon is transferred to _____________

Answer 1

an electron to move it from a low to a high energy orbital

Question 2

the energy transduction from solar energy to chemical energy except requires what four things?

Answer 2

-light absorption by chlorophyll
-electron flow through an electron transport system
-unidirectional proton pumping across a membrane
-an electrochemical proton gradient

Question 3

accessory pigments used to absorb photons

Answer 3

β-carotene, phycoerythrin, lutein, phycocyanin

Question 4

Carbon dioxide generally enters a plant through pores called __________

Answer 4

stomata

Question 5

direct regulation of the Calvin cycle activity to ensure maximum efficiency is done by what four things?

Answer 5

-stromal pH
-Mg2+ concentration
-NADPH concentration
-ATP concentration

Question 6

where is malate store in crassulacean acid metabolism (CAM) plants

Answer 6

large vacuoles

Question 7

Based on the comparisons of anoxygenic and oxygenic photosynthesis, the entry of oxygen into the atmosphere is most directly attributed to _____________

Answer 7

photophosphorylation

Question 8

Biosynthesis of sucrose occurs in the __________

Answer 8

cytosol

Question 9

The Calvin cycle in C3 plants occurs in [1] cells, whereas the Calvin cycle in C4 plants occurs in the [2] cells

Answer 9

1- mesophyll
2- bundle sheath

Question 10

Plastocyanin (PC) is a copper-containing protein that, like plastoquinol, is a mobile ____ carrier in photosynthesis

Answer 10

electron

Question 11

site of photosynthesis in cyanobacteria

Answer 11

photosynthetic membranes