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Honors Biology Photosynthesis 2

Total questions: 35

Worksheet time: 3hrs 12mins

Name
Class
Date
1.

Which of the following is NOT a product of the light reactions?

a)

Oxygen

b)

NADPH

c)

ATP

d)

Glucose (Sugar)

2.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
3.
What is the main purpose of the light dependent reactions?
a)

To provide the energy for the Calvin cycle

b)

To capture energy and make lipids

c)
To reflect green light
d)
To make sugars
4.
What are the two products of the light reactions that are needed for the calvin cycle?
a)
NAD and NADPH
b)
NADP + and Glucose
c)
NADPH and ATP
d)
Oxygen and NADPH
5.
Thylakoids are arranged in stacks called ____.
a)
Lamellae
b)
Stroma
c)

Grana

d)
Glucose
6.
The gel-like material that surrounds the grana is called ____
a)
lamellae
b)
granum
c)
thylakoid
d)
stroma
7.

Autotrophs (producers) can perform photosynthesis because they have -

a)

Mitochondria

b)

Ribosomes

c)

A Nucleus

d)

Chloroplasts

8.

The principal chemical compound that living things use for chemical energy in cells is

a)
DNA
b)
ATP
c)
H2O
d)
CO2
9.
What supplies the electron that is lost in PS II?
a)
oxygen
b)
water
c)
glucose
d)
rubisco
10.

In the ________________________, energy from the sun is used to make ATP and NADPH.

a)
light-independent reaction
b)
dark reaction
c)
light-dependent reaction
d)
Calvin cycle
11.
If all four plants were watered daily but placed in a closet, receiving no sunlight, what process would NOT occur?
a)

DNA replication

b)
Filtration of water through the soil
c)
Photosynthesis
d)

Cellular respiration

12.

Which of the following equations represents the overall chemical reaction for photosynthesis?

a)

6O2+ 6H2O → C6H12O6+ 6O2

b)

C6H12O6 + 6H2O→ 6O2+ 6O2

c)

6CO2+ 6H2O→ C6H12O6+ 6O2

d)

6O2 + 6H2O→ C6H12O6 + 6CO2

13.

Sunlight is used during photosynthesis to-

a)

Break down the xylem

b)

Break down the stomata

c)

Break down the water

d)

Capture the water

14.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
15.
What is the main purpose of the light dependent reactions?
a)

To provide the energy for the Calvin cycle

b)
To capture energy and make sugar
c)
To reflect green light
d)
To make sugars
16.
What does ATP synthase do?
a)

Create ATP using H+ ion flow.

b)
Break down ATP in chemiosmosis.
c)
Break down NADPH. 
d)
Create NADPH.
17.
What supplies the electrons that are lost in photosystem I (PSI)?
a)
the electrons from PS II
b)

CO2

c)
glucose
d)
oxygen
18.
What is the function of NADP+?
a)
It absorbs light
b)
It is an electron carrier
c)
It is a light-reflecting pigment
d)
It acts as long-term energy storage
19.

What is the final product of Photosystem 1 (PS1)

a)
NADPH
b)
ATP
c)
NADP+
d)
glucose
20.
Water is split during
a)
photosystem 1 of the light dependent reaction
b)
photosystem 2 of the light dependent reaction
c)
calvin cycle
d)
cell respiration
21.
What are the two products of the light reactions that are needed for the calvin cycle?
a)
NAD and NADPH
b)
NADP + and Glucose
c)
NADPH and ATP
d)
Oxygen and NADPH
22.
It is important to create a concentration of H+  in the thylakoid space so that the H+ can diffuse through_________ to create ______.
a)
ATP synthase, ATP
b)
NADH, NADPH
c)
proton pump, protons
23.

Main products of the Calvin Cycle are...

a)

Oxygen, NADP+, ADP

b)

Glucose, CO2, ADP

c)

ADP, NADP+, Glucose

d)

ATP, NADPH, Oxygen

24.

The Calvin Cycle occurs in the

a)

Thylakoid

b)

Grana

c)

Inner membrane of chloroplast

d)

Stroma

25.

5 carbon molecule that combines with CO2 in the Calvin Cycle

a)

3-PGA

b)

G3P

c)

RuBP

d)

Glucose

26.

Tiny pores on the underside of leaves

a)

Stroma

b)

Stomata

c)

Thylakoids

d)

Chloroplasts

27.

Plants can close their stomata when the temperature is hot

a)

To prevent water loss

b)

To prevent loss of oxygen

c)

To prevent loss of carbon dioxide

d)

To bring in more carbon dioxide

28.

Which of the following is true of the Calvin Cycle?

a)

carbon dioxide and energy (ATP and NADPH) are used to make sugar

b)

energy is absorbed from sunlight and converted to chemical energy stored in ATP and NADPH

c)

Occurs in the thylakoid

d)

Occurs in the cytoplasm

29.

Rate of photosynthesis ________ as light intensity _________

a)

increases, increases

b)

decreases, increases

c)

increases, decreases

30.

Temperatures that are too high can slow photosynthesis because

a)

stomata stay open

b)

enzymes are ruined

c)

there is not enough CO2

d)

there is too much water

31.
The CO2 used in the Calvin Cycle originates from ___________.
a)
The light phase
b)
The breakdown of the remaining G3P's
c)
Diffusion through the stoma
d)
Lumen of the Thylakoid
32.
True or False: The Calvin Cycle returns ADP and NADP to the light dependent phase.
a)
True
b)
False
33.

The enzyme responsible for Carbon Fixation in Photosynthesis is

a)
RuBisCo
b)
PEP Carboxylase
c)
Hexokinase
d)
Pyruvate DeHydrogenase
34.
Which of the following molecules is not needed for the Calvin Cycle?
a)
CO2
b)
ATP
c)
NADPH
d)
H2O
35.

What is the first stage of the Calvin Cycle?

a)

Carbon fixation

b)

Reduction

c)

Regeneration of RUBP

d)

Primary

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