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Review: Photosynthesis & Cellular Respiration

Total questions: 65

Worksheet time: 56mins

Name
Class
Date
1.

1. What is chlorophyll and how does it help plants?

a)

A.Chlorophyll is a pigment that absorbs light energy and makes glucose.

b)

B.Chlorophyll is a protein that changes shape in the presence of sunlight.

c)

C.Chlorophyll is a receptor that binds carbon dioxide when energized by light

d)

D.Chlorophyll is an enzyme that catalyzes the production of glucose when exposed to light.

2.

How will clear-cutting of forests affect the level of carbon dioxide in the atmosphere?

a)

It will decrease because of increased respiration.

b)

It will increase because of decreased photosynthesis.

c)

It will decrease because of decreased photosynthesis.

d)

It will remain constant as respiring animals remove the carbon dioxide.

3.

Beneath the outer layer of tree bark is a layer of live tissue. The cells of this live tissue contain chloroplasts. The bark also contains structures that allow gas exchange with the environment. These characteristics allow the tree bark to perform photosynthesis. Tree bark photosynthesis occurs mostly in early spring and late fall, or in times of drought or disease. What is the MOST likely reason bark photosynthesis is higher during these conditions?

a)

Photosynthesis keeps the bark from freezing.

b)

The bark produces a different type of sugar.

c)

The angle of light is different.

d)

The tree has fewer leaves.

4.
Plants, and life forms that use photosynthesis, are called
a)
Heterotrophs
b)
Megatrophs
c)
Autotrophs
d)
Phototrophs
5.
Living things that gain energy by eating other organisms are called
a)
Megatrophs
b)
Phototrophs
c)
Autotrophs
d)
Heterotrophs
6.

What does the following equation represent?


Sunlight +6H20 + 6CO2--> C6H1206 +6O2

a)

Cellular respiration

b)

Human respiration

c)

Photosynthesis

d)

Solar energy

7.

C6H1206 +6O2--> 6H20 + 6CO2 + Energy (ATP)

This equation represents ___________________.

a)

Human Respiration

b)

Cellular Respiration

c)

DNA Replication

d)

Photosynthesis

8.

Which of the following statements is true

a)

The products of photosynthesis are the reactants of cellular respiration.

b)

The products of photosynthesis are not necessary for respiration to occur.

c)

The reactants of photosynthesis are also the reactants of cellular respiration.

d)

The products of photosynthesis are also the products of cellular respiration.

9.

In the fall, deciduous trees no longer produce ____________.

a)

Chromosomes

b)

Mitocondria

c)

Chlorophyll

d)

Endoplasmic Reticulum

10.

Occurs in plants

a)

photosynthesis only

b)

cellular respiration only

c)

photosynthesis and cell respiration

d)

all of the above

11.

Occurs in animals

a)

photosynthesis only

b)

cellular respiration only

c)

cellular respiration and photosynthesis

d)

all of the above

12.

Animals are very active and require large amounts of energy to move. The cells and tissues used for movement most likely have _______________ mitochondria when compared to other cells.

a)

less

b)

more

c)

the same

d)

missing

13.
______________ produces the most ATP.
a)
photosnthesis
b)
aerobic respiration
c)
anaerobic respiration
d)
glycolysis
14.

How does ATP provide energy for the cell?

a)

The bond between the first and second phosphate is broken to release energy.

b)

The bond between the adenine and the sugar is broken to release energy.

c)

The bond between the sugar and phosphates are broken and release energy.

d)

The bond between the second and third phosphate are broken to release energy.

15.

Why are many plants green?

a)

plant cells are green

b)

plants absorb green light

c)

chlorophyll reflects green light

d)

rigid cell walls are green

16.
What do plants give off after photosynthesis?
a)
Oxygen
b)
carbon
c)
nitrogen
d)
hydrogen
17.
Muscle cells that are used during heavy exercise often do not receive enough oxygen for energy production.  What waste product builds up in muscle cells resulting in soreness?
a)
water
b)
alcohol
c)
carbon dioxide
d)
lactic acid
18.
What is the primary function of the light-dependent reactions of photosynthesis?
a)
To produce glucose
b)
To produce NADPH and ATP
c)
To use ATP
d)
To produce RuBP
19.
Plants need carbon dioxide from their environment to produce glucose during which stage of photosynthesis? 
a)
The light-dependent stage
b)
The light-independent stage (The Calvin Cycle)
c)
The electron transport chain
d)
ATP formation
20.
What can be made from fermentation?
a)
Lactic Acid Only
b)
Alcohol Only
c)
Lactic Acid and Alcohol
d)
Lactic Acid and 36-38 ATP
21.
What is the name of the 1st step of cellular respiration?
a)
Glycolysis
b)
Kreb's Cycle
c)
ETC
d)
Anaerobic respiration
22.
Where does glycolysis take place?
a)
Cytoplasm
b)
Stroma
c)
Thylakoid
d)
Mitochondria
23.
Glucose is broken down during which process
a)
Krebs cycle
b)
Calvin cycle
c)
Glycolysis
d)
Photosynthesis
24.

Which molecule is the product of Glycolysis and the reactant of the Krebs Cycle?

a)

pyruvic acid

b)

carbon dioxide

c)

water

d)

oxygen

25.

Which molecule is the product of the Krebs Cycle?

a)

oxygen

b)

pyruvic acid

c)

carbon dioxide

d)

water

26.

What is formed at the end of the Electron Transport Chain by the combination of its reactant and hydrogen?

a)

water

b)

oxygen

c)

carbon dioxide

d)

glucose

27.

The Electron Transport Chain is a series of chemical reactions in which energy is transferred to form a large amount of what molecule?

a)

glucose

b)

oxygen

c)

pyruvic acid

d)

ATP

28.
The inner membrane of this organelle is highly folded.  What is the advantage of this folding?
a)
It increases the amount of light absorbed by the organelle.
b)
It increases the structural support of the organelle.
c)
It increases the surface area, allowing greater ATP production.
d)
It increases the surface area and the rate of glucose production.
29.
Aerobic respiration yields about  ___ ATP molecules per glucose, whereas anaerobic respiration yields ____ ATP molecules per glucose.
a)
36; 2
b)
2; 36
c)
6; 2
d)
36; 18
30.
What is the net gain of ATP during glycolysis?
a)
1
b)
2
c)
4
d)
34
31.
What is the name of the process that helps make beer and wine?
a)
Fermentation
b)
Alcoholic fermentation
c)
Lactic acid fermentation
d)
Glycolysis
32.
What is the name of the structure on a leaf that lets gasses flow in and out?
a)
Stomata
b)
Cell membrane
c)
chlorophyll
d)
chloroplast
33.
Fermentation enables glycolysis to continue under 
a)
anaerobic conditions
b)
aerobic conditions
c)
photosynthetic conditions
d)
hydrophobic conditions
34.
Which of the following processes creates the most ATP during aerobic cellular respiration?
a)
glycolysis
b)
fermentation
c)
electron transport chain
d)
Kreb's cycle
35.

Fruits grown in hot climates are less sweet than those grown in cooler climates. The warmer temperatures increase the rate of cellular respiration in the plants, reducing the sugar content in some fruits. Why does increased respiration in the plants in warmer climates reduce the amount of sugar in the fruit?

a)

Chloroplasts move from the fruit to the stem to provide energy

b)

The flow of food is directed away from the fruit

c)

Sugars are moved out of the fruit and stored for later use

d)

Sugars are used as an energy source rather than being stored in the fruit

36.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
37.
Thylakoids are arranged in stacks called ____.
a)
Lamellae
b)
Stroma
c)
Granum
d)
Glucose
38.
The gel-like material that surrounds the grana is called ____
a)
lamellae
b)
granum
c)
thylakoid
d)
stroma
39.
Where does the Calvin cycle take place?
a)
stroma of the chloroplast
b)
thylakoid membrane
c)
outer membrane of the chloroplast
d)
interior of the thylakoid membrane
40.
What supplies the electron that is lost in PS II?
a)
oxygen
b)
water
c)
glucose
d)
rubisco
41.

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

42.
What happens to NADPH and ATP after they are used in the Calvin Cycle?
a)
they recycle back to the light reactions
b)
they are used to make G3P
43.
How many G3P molecules make one molecule of glucose? 
a)
1
b)
2
c)
3
d)
4
44.
What happens to the remaining G3P molecules in the last step of the dark reactions?
a)
They are used to make glucose.
b)
They are reshuffled to make CO2 by adding ATP.
c)
They exit the cycle.
d)
They are reshuffled to make RuBP by adding ATP. 
45.
In the Calvin Cycle, carbon from CO2 is added to one molecule of RuBP to create _________.
a)
RUDP
b)
An Unstable 6 Carbon Molecule
c)
PGA
d)
2 3-carbon molecules
46.
The 5-Carbon molecules that the Calvin Cycle starts and ends with, is called _____________.
a)
PGA
b)
G3P
c)
RuBP
d)
RuDp
47.

Which enzyme joins CO2 and RuBP?

a)

NADP+ reductase

b)

RUBISCO

c)

ATP synthase

d)

none of the above

48.

To bring in nonliving carbon (CO2) and use it to make organic compounds is a process called _______________.

a)

carbon fixation

b)

cellular respiration

c)

catabolic reactions

d)

mitosis

49.
Before entering Krebs Cycle, pyruvate is:
a)
Oxidized
b)
Reduced
c)
Isomerized to Acetyl-CoA
d)
Phosphorylated
50.
The number of ATP molecules produced out of Krebs Cycle is:
a)
2
b)
3
c)
4
d)
0
51.
How many FADH2 molecules are produced by 1 molecule of glucose?
a)
1
b)
2
c)
3
d)
4
52.
How many NADH molecules are produced by a molecule of glucose through the Krebs' Cycle?
a)
2
b)
3
c)
4
d)
6
53.
How many CO2 molecules are produced by the Krebs Cycle for a molecule of glucose?
a)
2
b)
4
c)
6
d)
3
54.
Krebs Cycle takes place in the:
a)
Cytoplasm
b)
Matrix
c)
Ribsome
d)
InterMembrane Space
55.
Folds in the mitochondrion are called:
a)
Cristae
b)
Matrix
c)
Golgi Bodies
d)
Carbuncles
56.
Prior to entering the Krebs Cycle, each pyruvate molecule loses electrons, hydrogen ions, and a carbon, forming an energy-rich molecule of
a)
Acetyl-CoA
b)
Citrate
c)
Oxaloacetate
d)
Malate
57.
After the Krebs Cycle only a small portion of the energy of glucose has been converted to ATP. At this point the majority of usable energy is contained in
a)
NADH and FADH2
b)
Carbon Dioxide 
c)
Acetyl-CoA
d)
Citrate
58.

In the electron transport chain, Oxygen acts as...

a)

a carrier of electrons, passing electrons down the chain

b)

a reducing agent

c)

the final electron acceptor

d)

a coenzyme

59.

The electrons that are transferred through the electron transport chain initially belonged to

a)

NADH

b)

FADH2

c)

ATP

d)

Oxygen

e)

NADH and FADH2

60.

The process that enables ATP synthase to function is...

a)

endocytosis

b)

active transport

c)

pinocytosis

d)

osmosis

e)

diffusion

61.

The electron transport chain of photosynthesis is initiated by ____ in _____.

a)

Photosystem I; absorption of light

b)

absorption of light; Photosystem I

c)

Photosystem II; absorption of light

d)

absorption of light; Photosystem II

62.

Electron transport helps establish a _____ that powers ATP production.

a)

proton gradient

b)

vacuole

c)

peroxisome

d)

power vault

63.

As electrons travel down the electron transport chain, they release

a)

ADP

b)

Energy

c)

ATP

d)

Hydrogen ion

64.

Chemiosmosis occurs as H+ ions move through ____ in the cristae, making ATP.

a)

foldings

b)

ATP synthase

c)

protein channels

65.
Two different species of bacteria are examined. Scientists find that species X always produces CO2 and H2O during cellular respiration. Species Y always produces ethyl alcohol and CO2. Which conclusion can be made from these observations?
a)
Only species Y is aerobic.
b)
Only species Y is anaerobic
c)
Both species X and Y are aerobic.
d)
Both species X and Y are anaerobic.

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