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Unit 3 Exam 3 Review (Biology)

Total questions: 51

Worksheet time: 56mins

Name
Class
Date
1.

Organisms that make their own food

a)

Producer

b)

Consumer

c)

Decomposer

2.

Organisms that obtain energy by feeding on other organisms

a)

Producer

b)

Consumer

c)

Decomposer

3.

Organisms that break down wastes and dead organisms and return the raw materials to the environment

a)

Producer

b)

Consumer

c)

Decomposer

4.

Consumers that feed on the bodies of dead organisms

a)

Carnivores

b)

Omnivores

c)

Herbivores

d)

Scavengers

5.

Consumers that eat both plants and animals

a)

Omnivores

b)

Carnivores

c)

Herbivores

d)

Scavengers

6.

A food _______ is a series of events in which one organism eats another and obtains energy.

a)

chain

b)

web

c)

pyramid

d)

plate

7.

As you work your way up the energy pyramid, what happens to the energy?

a)

It increases

b)

It decreases

c)

It stays the same

d)

Nothing

8.

In the energy pyramid, what is the bottom level composed of?

a)

Producers

b)

First-Level Consumers

c)

Second-Level Consumers

d)

Third-Level Consumers

9.

In the energy pyramid, what comes after the producers?

a)

Producers

b)

First-Level Consumers

c)

Second-Level Consumers

d)

Third-Level Consumers

10.

How much energy is available to be passed on to the next level in a food web?

a)

100%

b)

10%

c)

50%

d)

75%

11.
This is referred to as the energy currency of the cell
a)
ADP
b)
ATP
c)
Mitochondria
d)
Nucleus
12.
This process releases chemical energy from sugars and other carbon-based molecules to make ATP when oxygen is present.
a)
photosynthesis
b)
light-independent reaction
c)
cellular respiration
d)
light-dependent reaction
13.

Glucose is broken down into pyruvic acid during which process

a)
Krebs cycle
b)
Calvin cycle
c)
Glycolysis
d)
Photosynthesis
14.
What is the correct equation for cellular respiration?
a)
6O2 + C6H12O6 -> 6CO2 + 6H2O + Energy
b)
6O2 + C6H12O6 + Energy -> 6CO2 + 6H2O
c)
6CO2 + 6H2O -> 6O2 + C6H12O6 + Energy
d)
6CO2 + 6H2O + Energy -> 6O2 + C6H12O6
15.
Where does the Krebs Cycle take place?
a)
mitochondria
b)
chloroplast
c)
cytoplasm
d)
nucleus
16.

what are the outputs of glycolysis?

a)

CO2

b)

Pyruvic acid x 2

c)

H2O

d)

ATP

17.
Where does glycolysis take place?
a)
Cytoplasm
b)
Stroma
c)
Thylakoid
d)
Mitochondria
18.

What role do NADH and FADH2 (produced during Glycolysis and Kreb's Cycle) play in cellular respiration

a)

they are energy carriers (hydrogen)that use that energy to produce massive amounts of ATP

b)

They are waste products and are pushed out of the cell

c)

They are necessary for long-term energy storage

d)

They don't play any role in cellular respiration

19.

What happens in the electron transport chain?

a)

NADH and FADH2 drop off hydrogens to form massive amounts of ATP

b)

pyruvic acid is formed from breaking down glucose

c)

CO2 is released and H2O and ATP

d)

glucose is broken down and ATP is formed

20.

Where do the reactions of photosynthesis take place in autotrophs?

a)

Chloroplast

b)

Mitochondria

c)

Cell Walls

d)

Cytoplasm

21.

Where does the energy for plants to perform photosynthesis come from?

a)

Breaking down ATP

b)

sunlight

c)

glucose metabolism

d)

None of the Above

22.

Photosynthesis is a biological process that occurs in autotrophs. Which of the following is produced as a result of photosynthesis?

a)

Water and light

b)

Glucose and chlorophyll

c)

Glucose and oxygen

d)

Carbon dioxide and water

23.

What is the chemical equation for photosynthesis? Choose the BEST answer

a)

C6H12O6 + O2 -> CO2 + H2O

b)

CO2 + H2O --> C6H12O6 + O2

c)

6 CO2 + 6 H2O --> C6H12O6 + 6 O2

d)

C6H12O6 + 6 O2 -> 6 CO2 + 6 H2O

24.

What is the pigment responsible for absorbing light energy in chloroplasts during photosynthesis?

a)

None of the Above

b)

Carotenoids

c)

Xenophylls

d)

Chlorophyll

25.

Cellular Respiration involves the chemical breakdown of _____ to form ATP Energy

a)

Fats

b)

Fructose

c)

Glucose

d)

Proteins

26.

Where do the reactions of Aerobic respiration take place? (Krebs Cycle & Electron Transport Chain)

a)

Cytoplasm

b)

Mitochondria

c)

Chloroplasts

d)

Cell Wall

27.
What are the reactants (what's needed) for photosynthesis?
a)
glucose and oxygen
b)
light, water, and carbon dioxide
c)

oxygen and carbon dioxide

d)

light and water

28.

What does aerobic mean?

a)

without ATP

b)

without oxygen

c)

with ATP

d)

with oxygen

29.

Where does anaerobic respiration occur in the cell?

a)

cytoplasm

b)

nucleus

c)

mitochondria

d)

chloroplast

30.

What does anaerobic mean?

a)

without oxygen

b)

with oxygen

c)

without ATP

d)

with ATP

31.

What does a plant take IN to start photosynthesis?

a)

oxygen

b)

carbon dioxide

c)

glucose

d)

lipids

32.

What does a plant give OFF in photosynthesis?

a)

water, sunlight

b)

glucose, oxygen

c)

oxygen, water

d)

glucose, carbon dioxide

33.

A light-dependent reaction requires sunlight AND:

a)

glucose

b)

water

c)

ATP

d)

oxygen

34.
The process of plants losing water through their leaves is called ____.
a)
condensation
b)
evaporation
c)
transpiration
d)
exhaling
35.
What converts nitrogen into a useable form for plants and animals?
a)
bacteria
b)
fungi
c)
rain
36.

What cycle are fossil fuels part of ?

a)

carbon

b)

oxygen

c)

nitrogen

d)

phosphorus

37.

What is the largest reservoir for nitrogen?

a)

the ocean

b)

rocks and minerals

c)

the atmosphere

d)

bacteria

38.

The carbon in coal, oil, and natural gas came from

a)

the combustion of fossil fuels

b)

the remains of dead organisms

c)

carbon-fixing bacteria in swamp soil

d)

carbon dioxide dissolved in ocean water

39.

Nitrogen fixation is the process in which certain bacteria convert nitrogen gas into

a)

liquid nitrogen

b)

nitrates

c)

nitrites

d)

ammonia

40.

The water cycle is driven by

a)

water

b)

wind

c)

the sun

d)

Earth's rotation

41.

A place where matter/nutrients are collected/stored.

a)

A lake

b)

A reservoir

c)

A cloud

d)

The atmosphere

42.

When water is heated in the ocean by the sun and turns into water vapor

a)

Condensation

b)

Evaporation

c)

Transpiration

43.

Human activity can increase CO2 levels in the atmosphere through

a)

Photosynthesis

b)

Burning of fossil fuels

c)

Planting more trees

d)

Removing nitrogen from fertilizer.

44.

Nitrogen in the atmosphere is unusable. What form is nitrogen in the atmosphere?

a)

Nitrites

b)

Ammonia

c)

Nitrates

d)

N2 gas

45.

Denitrifying bacteria

a)

Turn nitrogen gas into nitrates so that plants can synthesize amino acids.

b)

Turn nitrates into nitrites so that nitrogen fixing bacteria can synthesize DNA.

c)

Returns nitrogen into the atmosphere in the form of N2 gas.

d)

Use phosphorus as fertilizer.

46.
How do  animals get nitrogen?
a)
the atmosphere 
b)
eating other organisms
c)
bacteria
d)
lightning 
47.

The Carbon Cycle has the greatest impact on ______________ on Earth

a)

Living organisms

b)

Climate change

c)

Plants

d)

The sun

48.

Which of these nitrogen cycle processes converts atmospheric nitrogen to a soil form of nitrogen that is usable by plants?

a)

nitrogen fixation

b)

nitrification

c)

denitrification

d)

ammonification

e)

assimilation

49.
Nitrification happens in the ______
a)
Air 
b)
Soil 
c)
Ground Water 
d)
Plants 
50.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
51.

If the plant population decreased, the amount of carbon in the atmosphere would _________.

a)

Stay the same

b)

Increase

c)

Decrease

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