Photosynthesis

Question 1

Photosynthesis

Answer 1

Process by which light energy is used to make glucose, carried out by all organisms in Plant Kingdom
It is a reduction reaction; carbon in CO2 is gaining electrons

Question 2

Grana

Answer 2

In chloroplast
Made up of membranes called thylakoids
Where light-dependent reactions occur

Question 3

Stroma

Answer 3

In chloroplast

Where Calvin cycle & light-independent reactions occur

Question 4

Photosynthetic pigments

Answer 4

Chemicals that absorb light energy & use it to carry out photosynthesis

Question 5

Pigments

Answer 5

Substances that absorb light in the visible spectrum

Different pigments absorb different wavelengths

Question 6

Chlorophyll a

Answer 6

It’s green & is the only photosynthetic pigment that can participate directly in light-dependent reactions

Question 7

Antennae or Accessory Pigments

Answer 7

Assist in photosynthesis by capturing & passing on photons of light to chlorophyll a & thus expand the range of light that can be used to produce sugar

Question 8

Chlorophyll b

Answer 8

Green & absorb all other wavelengths besides green

Question 9

Carotenoids

Answer 9

Yellow, orange, & red

Responsible for colour of carrots

Question 10

Phycobilins

Answer 10

Red & are found in red algae that live in deep ocean where there is little light

Question 11

Light-Dependent Reactions

Answer 11

Part of photosynthesis that requires light
Produces energy (ATP) & protons for the light-independent reactions
Release oxygen

Question 12

Light-Independent Reactions

Answer 12

Part of photosynthesis that doesn’t require light directly, only products of light-dependent reactions
It’s function is to make sugar (PGAL)

Question 13

Carbon Fixation

Answer 13

Incorporation of CO2 into a sugar, occurs during Calvin Cycle

Question 14

Calvin Cycle

Answer 14

Cyclical process that produce sugar (PGAL) in light-independent reactions

Question 15

Reduction

Answer 15

Gain of electrons