photosynthesis

Question 1

Photosynthesis

Answer 1

Conversion of light energy from the sun into chemical energy.

Question 2

light reactions

Answer 2

the light driven production of ATP

Question 3

Carbon fixation

Answer 3

the conversion of CO2 to carbohydrates

Question 4

Chloroplast

Answer 4

An organelle found in plant and algae cells where photosynthesis occurs

Question 5

structure of chloroplast

Answer 5

outer membrane, inter membrane space, inner membrane, stroma, thykaloid, granum (stack of thykaloid), thylakoid membrane, thylakoid lumen.

Question 6

How are energy and wavelength related

Answer 6

inversely

Question 7

What colour of light is usually absorbed by plants

Answer 7

blues and reds

Question 8

chlorophyll a

Answer 8

absorbs blue-violet and red light and reflects green

Question 9

Chlorophyll b

Answer 9

extends the absorption spectrum and acts as an accessory pigment that also participates in light absorption

Question 10

Carotenoids

Answer 10

Accessory pigments that broaden the spectrum of colors that can drive photosynthesis.

Question 11

Photosystem 1 (PS1)

Answer 11

One of two light-capturing units in a chloroplast’s thylakoid membrane or in the membrane of some prokaryotes; it has two molecules of P700 chlorophyll a at its reaction center.

Question 12

antenna complex

Answer 12

Part of a photosystem, containing an array of chlorophyll molecules and accessory pigments, that receives energy from light and directs the energy to a central reaction center during photosynthesis.

Question 13

Photosystem 2

Answer 13

(Functions 1st) Reaction Center is P680(red), a light reaction in which ATP and NADPH are formed

Question 14

Electron transport chain photosynthesis

Answer 14

Electrons move through several transmembrane proteins that are responsible for pumping H+ ions across the membrane creating the chemical gradient across the chloroplast membrane. Energy source is captured light. Part of the light reactions.

Question 15

noncyclic pathway

Answer 15

Light-dependent photosynthetic pathway that is used to generate ATP and NADPH; because the pathway is noncyclic, the electrons must be replaced by the splitting of water (photolysis).

Question 16

Photolysis

Answer 16

In the thylakoid membranes of a chloroplast during light-dependent reactions, two molecules of water are split to form oxygen, hydrogen ions, and electrons.

Question 17

final photosynthesis electron acceptor

Answer 17

NADPH

Question 18

noncyclic electron flow

Answer 18

A route of electron flow during the light reactions of photosynthesis that involves both photosystems and produces ATP, NADPH, and oxygen. The net electron flow is from water to NADP+.

Question 19

cyclic electron flow

Answer 19

A route of electron flow during the light reactions of photosynthesis that involves only photosystem I and that produces ATP but not NADPH or oxygen.

Question 20

electron donor in photosynthesis

Answer 20

H2O

Question 21

electron donor in cellular respiration

Answer 21

NADH and FADH2

Question 22

final electron acceptor cell resp

Answer 22

Oxygen

Question 23

final electron acceptor in photosynthesis

Answer 23

NADP+

Question 24

photosynthesis produces

Answer 24

NADPH, ATP, O2

Question 25

Cell Resp products

Answer 25

ATP, H2O

Question 26

Calvin Cycle

Answer 26

reactions of photosynthesis in which energy from ATP and NADPH is used to build high-energy compounds such as sugars

Question 27

How many steps are in the Calvin cycle

Answer 27

3 steps. 1.) Carbon fixation 2.) Energy consumption and carbon reduction 3.) RuBP regeneration

Question 28

Where does the Calvin cycle take place?

Answer 28

stroma of the chloroplast

Question 29

Where does the electron transport chain occur in photosynthesis

Answer 29

Thylakoid membrane

Question 30

What part of photosynthesis does not need light?

Answer 30

dark reaction/ Calvin cycle

Question 31

What part of photosynthesis needs light?

Answer 31

Light reaction/ Electron Transport Chain