Lab Exercise #10: Photosynthesis

Question 1

Autotrophs (self-feeders)

Answer 1

Produce their own food molecules using inorganic carbon dioxide as a source of carbon

Question 2

Stoma

Answer 2

Small openings in epidermis of the leaf or stem of a plant. Allows gas exchange to occur

Question 3

Stroma

Answer 3

Fluid-filled inside the inner membrane. Location of the carbon-fixing dark reactions

Question 4

Guard Cells

Answer 4

Lie on each side of the stoma and regulate its opening and closing

Question 5

Mesophyll

Answer 5

In between the upper and lower epidermis. Location of the photosynthetic cells

Upper portion consists of tall, tightly packed cells
Lower portion consists of more rounded cells that are separated from one another by air spaces to allow circulation of gases through the leaf

Question 6

Thylakoids

Answer 6

Flattened membrane sacs

Light reactions of photosynthesis occurs here

Question 7

Lamellae

Answer 7

Membranes that connect adjacent grana together

Question 8

Grana

Answer 8

Stacks of thylakoids

Question 9

Spectroscope

Answer 9

an optical device for producing and observing a spectrum of light or radiation from any source

Question 10

ROYGBIV

Answer 10

Red (longest wavelengths)
Orange
Yellow
Green
Blue
Indigo
Violet (shortest wavelengths)

Question 11

Short wavelengths have _______ energy

Answer 11

High Energy

Question 12

Long wavelengths have _______ energy

Answer 12

Low Energy

Question 13

Which organelle does photosynthesis?

Answer 13

Chloroplasts

Question 14

Why does chlorophyll appear green?

Answer 14

Chlorophyll does not absorb green and instead reflects it

Question 15

What does the presence of starch in a portion of the leaf indicate?

Answer 15

it indicated that photosynthesis occurred in order to produce the starch

Question 16

a) . sugar molecules produced
b) . water split
c) . ATP Produced
d) . NADP+ —> NADPH
e) . NADPH —> NADP+
f) . release of oxygen gas
g) . CO2 utilization

Answer 16

a) . Dark Reaction
b) . Light Reaction
c) . Light Reaction
d) . Light Reaction
e) . Dark Reaction
f) . Light Reaction
g) . Dark Reaction

Question 17

What test did we use to determine if starch was present?

Answer 17

Iodine test