Unit 3 - Photosynthesis

Question 1

Excess acetyl CoA can …?

Answer 1

can be removed and used to synthetize the fatty acids

Question 2

What is gluconeogenesis?

Answer 2

When glucose levels are low new glucose can be created by this.

Question 3

What are the three steps of glucogeneogenesis?

Answer 3

Breakdown of proteins; Glucogenic amino acids
Breakdown of lipids
Pyruvate and lactate

Question 4

What is the reverse of glycolysis?

Answer 4

Gluconeogenesis

Question 5

Plants are …?

Answer 5

the primary producers because the rest are consumers

Question 6

Light reactions and calvin cycle happens in…?

Answer 6

Chloroplasts

Question 7

Chloroplasts are descendant of ?

Answer 7

Free-living cyanobacteria

Question 8

What is differnent from the chloroplast fromthe other organelle?

Answer 8

The chloroplast have two membrane because of their endosymbiosis wit the cell.

Question 9

The intermembrane aqueous environment of a plant cell is?

Answer 9

a stroma

Question 10

In photosynthesize what is synthetizize first?

Answer 10

NADPH

Question 11

Light reactions?

Answer 11

Photosystem 1 and 2

Question 12

Dark reaction?

Answer 12

calvin cycle, hatch slack cycle and CAM photosynthesis

Question 13

What are the three options for an excited electons?

Answer 13

Ground state by emmiting a photon, ground state by being captured by pigment, ground state by transferring to another electron accpetor molecule

Question 14

Chlorophyll a and B differ by?

Answer 14

Methyl and aldehyde

Question 15

chlorophyll a strongly absorbs? and does not absorb?

Answer 15

blue and red, and green and yellow

Question 16

What surround the reaction center?

Answer 16

An antenna complex

Question 17

What is transported through the photosystem?

Answer 17

high energy electron

Question 18

By raising an electron in p680 to a higher state you get

Answer 18

P680*

Question 19

Cyclic electron transport involves only what?

Answer 19

Light absorbtion by photosystem 1, with the energy of proton-motive force and generate ATP. NADPH is not formed during Cyclic!!!

Question 20

Does cellular respiration happens in plants?

Answer 20

Yes, in all cells countaining no chloroplasts.

Question 21

G3P is used differently in both? why is that?

Answer 21

G3P is used anabolic by photosynthesis and G3p is used catabolic in respiration.

Question 22

Enzyme specificity Rubisco?

Answer 22

Rubisco is innefiucient with Co2 because it also can react with o2, therefore when the two are competing the O2 tends to be active more than the co2.

Question 23

What is photorespiration?

Answer 23

So it is when the rubisco consumes o2 and releases CO2 similar to the cellular respiration

Question 24

What is the difference between the C4 plants and the CAM plants

Answer 24

So the C4 plants uses the C4 cycle and the calvin cycle at the same time but at different locations but the CAM use it at the same location but at different time.