Lab 7: Photosynthesis

Question 1

What is the end product of photosynthesis

Answer 1

glucose

Question 2

CO2 is converted into a stable organic compound through a process known as

Answer 2

carbon fixation

Question 3

what is the first step of photosynthesis

Answer 3

light reactions

Question 4

what is the second step of photosynthesis

Answer 4

dark reactions

Question 5

what pigment does photosystem I work best in

Answer 5

P700

Question 6

what pigment does photosystem II work best in

Answer 6

P680

Question 7

what kind of process is photosynthesis?

Answer 7

anabolic

Question 8

When leaf pigments absorb light, electrons are boosted to a higher energy level, providing energy to:

Answer 8

produce ATP and NADP

Question 9

Large complexes of proteins and pigments (light-absorbing molecules) that are optimized to harvest light are called:

Answer 9

photosystems

Question 10

What is the chemical equation for photosynthesis?

Answer 10

6CO2 + 6H2O + light —> C6H12O6 + 6O2

Question 11

What will happen in the experiment when light hits the chloroplasts?

Answer 11

• DPIP will be reduced
  
  • DPIP will change from blue to colorless
  • there will be an increase in light transmittance

Question 12

During the dark reactions, atmospheric carbon dioxide (CO2) is brought into the leaf through tiny pores called: __________

Answer 12

stomata

Question 13

is an important anabolic pathway that uses atmospheric carbon dioxide, water, and light energy to generate glucose and oxygen.

Answer 13

photosynthesis

Question 14

photons of light within the visible range of the electromagnetic spectrum strike a group
of pigments housed in a “photosystem.”

Answer 14

light reactions

Question 15

what happens in light dependent reactions?

Answer 15

water breaks down releasing electrons
they then move through photosystems and ETC
At the end of the 2nd ETC they pass onto NADP making NADPH

Question 16

where is the H concentrated gradient located

Answer 16

thylakoid membrane

Question 17

H+ is ultimately allowed to diffuse back across the membrane back into the stroma by what?

Answer 17

the facilitation of the enzyme ATP synthase.

Question 18

what is used to power the ATP synthase pump?

Answer 18

H+ flow

Question 19

what is used to power dark reactions

Answer 19

NADPH and ATP

Question 20

what is another word for dark reactions?

Answer 20

light -independent reactions
Calvin-Benson cycle

Question 21

carbon dioxide (CO2) is brought into the leaf through tiny pores called stomata and converted into
a stable organic compound in a process known as

Answer 21

carbon fixation

Question 22

how is glucose made by dark reactions

Answer 22

the carbon compound is phosphorylated and converted to glucose.

Question 23

what happens in dark reactions

Answer 23

in the dark carbon dioxide is brought to the leaf to be converted into a compound that is phosphorylated and converted to glucose.