Lesson 10: Intro to Photosynthesis

Question 1

Photoautotroph

Answer 1

an organism that makes its own food using sunlight energy.

Question 2

Light dependant reactions

Answer 2

first stage of photosynthesis which requires light

Question 3

Calvin Cycle

Answer 3

second stage of photosynthesis that does not require light

Question 4

Chloroplast

Answer 4

plant cell organelle that is the site of photosynthesis

Question 5

Stroma

Answer 5

fluid that surrounds thylakoids

Question 6

Thylakoid

Answer 6

pancake shaped membranes inside chloroplast

Question 7

Chlorophylls

Answer 7

photosynthetic pigments found in plants

Question 8

Chlorophyll a

Answer 8

accepts energy from other pigments and transfers electrons to Primary Electron Acceptors (molecules that accept
electrons)

Question 9

Chlorophyll b

Answer 9

transfers energy to chlorophyll a

Question 10

Carotenoids

Answer 10

other plant pigments which transfer energy to chlorophyll molecules

Question 11

Antenna Complex

Answer 11

a cluster of light absorbing pigments in the thylakoid membrane

Question 12

Absorption Spectrum

Answer 12

the amount of light energy that a substance absorbs

Question 13

What colours do chlorphyll a absorb?

Answer 13

blue and red light

Question 14

What colours do chlorphyll b absorb?

Answer 14

blue-green and orange light

Question 15

What colours do Carotenoids absorb?

Answer 15

absorbs purple to green light

Question 16

Photosystem I

Answer 16

collection of pigment molecules and chlorophyll a that absorbs ight at the 700nm wavelength

Question 17

Photosystem II

Answer 17

collection of pigment molecules and chlorophyll a that absorbs light at the 680 nm wavelength