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Biology Unit 2: Review

Total questions: 96

Worksheet time: 2hrs 36mins

Name
Class
Date
1.
a)

“Steady state” maintaining the balance of life.

b)

Concentration of the solutes outside the cell are the same as inside the cell.

c)

Concentration of water molecules and lower solutes than the solution inside the cell.

d)

Concentration of water molecules and higher solutes than the solution inside the cell.

2.
a)

“Steady state” maintaining the balance of life.

b)

Concentration of the solutes outside the cell are the same as inside the cell.

c)

Concentration of water molecules and lower solutes than the solution inside the cell.

d)

Concentration of water molecules and higher solutes than the solution inside the cell.

3.
a)

“Steady state” maintaining the balance of life.

b)

Concentration of the solutes outside the cell are the same as inside the cell.

c)

Concentration of water molecules and lower solutes than the solution inside the cell.

d)

Concentration of water molecules and higher solutes than the solution inside the cell.

4.

The model shows the one-way flow of energy through a series of trophic levels in the food chain. Which mathematical relationship best describes the trends shown in the model?

a)

energy at lower trophic level = 0.1 × energy at next trophic level

b)

energy at lower trophic level = 0.15 × energy at next trophic level

c)

energy at lower trophic level = 10 × energy at next trophic level

5.

Mark all of the following activities that would add carbon to the atmosphere.

a)

a dead tree decomposing

b)

a factory burning fossil fuels

c)

a bush undergoing photosynthesis

d)

a caterpillar undergoing respiration

6.

Mark all of the following activities that would remove carbon from the atmosphere.

a)

a dead tree decomposing

b)

a factory burning fossil fuels

c)

a bush undergoing photosynthesis

d)

a caterpillar undergoing respiration

7.

The inputs of cellular respiration are glucose and (a)   , and bonds in these molecules are broken.

8.

The outputs of cellular respiration are (a)   and water, and new bonds are formed in these molecules.

9.

The energy stored in one molecule of glucose leads to many molecules of (a)   .

10.
Why is the insect a consumer?
a)
It is eaten by a mouse.
b)
It can make its own food.
c)
It eats the plant.
11.
Short Answer on Test: Why will having fewer insects affect the mice?
a)
The mice will not have enough insects to eat.
b)
It will not affect the mice.
c)
The mice will have too many insects to eat.
12.
In the food chain pictured, the source of energy for the water plant is ______.
a)
Sun
b)
Water Plant
c)
Mayfly
d)
Trout
13.
In the food chain pictured, why is the plant a producer?
a)
The plant consumes the sun.
b)
The plant makes its own food.
c)
The plant is not a producer.
14.
Which of the following organisms is a producer?
a)
Sun
b)
Water Plant
c)
Mayfly 
d)
Trout
15.
Which picture would be first to show the flow of energy through the food chain.
a)
Snake
b)
Sun
c)
Carrot
d)
Rabbit
16.
Which picture would be second to show the flow of energy through the food chain.
a)
snake
b)
sun
c)
carrot
d)
rabbit
17.
Which picture would be third to show the flow of energy through the food chain.
a)
Snake
b)
Sun
c)
Carrot
d)
Rabbit
18.
Which picture would be fourth to show the flow of energy through the food chain.
a)
Snake
b)
Sun
c)
Carrot
d)
Rabbit
19.
Short Answer on the Test: What would happen if all of the carrots died in the food chain?
a)
The rabbits would have too much to eat.
b)
The rabbits would not be able to eat carrots.
20.
Which best describes what a food chain shows you?
a)
Energy flow through an ecosystem
b)
Food flowing through an ecosystem
c)
Consumers going into other consumers
d)
Who eats who
21.
What are animals called in a food chain?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Plants
22.
What are the organisms that break down dead stuff?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Organisms
23.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
24.
What is the role of a producer?
a)
Use sunlight to make food
b)
Gain energy from eating other organisms
c)
Keep other species from overpopulating
d)
Breaking down dead stuff 
25.
a deer population has significantly increased, the best hypothesis is 
a)
the deer's main predator has been eliminated
b)
competition increased
c)
decreased water levels of local ponds
d)
organisms that rely on similar food sources migrated to the area
26.
Which event is the best example of competition between species in a pond?
a)
dragonflies landing on lily pads
b)
lizards and snakes lying in the sun
c)
hawks eating mice
d)
frogs and toads eating flies
27.

Birds eat insects off the skin of cows. If the relationship is a type of mutualism, then the organisms that will benefit are

a)

only the cattle

b)

neither the birds or the cattle

c)

both the birds and the cattle

d)

only the birds

28.
Which is the smallest level of an ecosystem?
a)
organsism
b)
population
c)
community
d)
ecosystem
29.
Which relationship describes predator/prey
a)
hawks and shrubs
b)
mountain lion and deer
c)
frogs and trees
d)
grasses and crickets
30.
A diagram that shows the amount of energy that moves from one feeding level to another is termed..
a)
energy pyramid
b)
adaptation
c)
autotroph
d)
food web
31.
a system of food chains that shows the transfer of energy  is termed
a)
food web
b)
food chain
c)
prey
d)
predator
32.
an organism that can produce its own food through photosynthesis
a)
consumer
b)
heterotroph
c)
autotroph
d)
herbivore
33.
Commensalism is
a)
one species benefits, the other is not affected
b)
both species benefit
c)
both species are harmed
d)
one species benefit, the other is harmed
34.
Biodiversity is 
a)
the variety of species within an ecosystem
b)
a large number of the same species in an ecosystem
c)
an abundant amount of the same primary consumers 
d)
the ability to have an abundant source from the same species
35.
an example of producer consumer relationship would be
a)
lion eating a deer
b)
grasshopper getting energy from grass
c)
hawk getting energy from snakes
d)
earthworm breaking down dead material
36.
__________ is an organism that only eats plants for energy.
a)
Carnivore
b)
Herbivore
c)
Omnivore
d)
Terivore
37.
__________ is an organism that only eats meat for energy.
a)
Omnivore
b)
Borivore
c)
Herbivore
d)
Carnivore
38.
__________ is an organism that eats BOTH plants and animals for energy.
a)
Omnivore
b)
Darnivore
c)
Carnivore
d)
Herbiovre
39.
Lions only eat buffalo, antelopes, zebras and crocodiles. They are called __________.
a)
Omnivore
b)
Herbivore
c)
Carnivore
d)
Delivore
40.
Elephants only eat leaves, fruit, nuts and grass. They are called __________.
a)
Omnivore
b)
Fortivore
c)
Herbivore
d)
Carnivore
41.

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

a)

There would be a decrease in the small bird population.

b)

There would be a decrease in the grass/flowers population.

c)

There would be a decrease in the mice population.

d)

There would be an increase in the grass/flowers population.

42.
A consumer that hunts is called:
a)
a producer.
b)
an omnivore.
c)
a predator.
d)
a herbivore.
43.
Which one is NOT an example of a decomposer?
a)
mushroom
b)
leaves
c)
mold
d)
worm
44.

1. What are renewable resources?

a)

. Resources that are used faster than they form

b)

resources that can replenish themselves over time

c)

resources that formed over millions of years

d)

resources that exist only in rural areas

45.

1. What would Earth be like without the greenhouse effect?

a)

The same temperature

b)

a little cooler than it is now

c)

. Too cold to live

d)

a little warmer than it is now

46.

According to the graph, what material’s recycling would reduce the largest portion of America’s trash?

a)

Metals

b)

paper

c)

plastics

d)

Yard trimmings

47.

1. Which biome has the highest biodiversity and is the most threatened?

a)

Temperate forests

b)

grasslands

c)

tropical rain forests

d)

deserts

48.

1. Why is firewood considered to be a renewable resource?

a)

It can be replenished over time.

b)

It is used up faster than it can form.

c)

It is made from coal.

d)

It can be made synthetically.

49.

1. Why has Earth's human carrying capacity increased greatly?

a)

Other organisms have been displaced by agriculture, so there is more space for humans.

b)

Humans have modified their environment due to technological advances.

c)

Humans can live closer together than other animals

d)

Humans are now eating fewer plants than they used to.

50.

1. Which of the following is not a renewable resource?

a)

coal

b)

wind energy

c)

solar energy

d)

water

51.

1. What factor does not determine the size of an individual's ecological footprint?

a)

amount and efficiency of resource use

b)

amount of waste produced

c)

size of population

d)

toxicity of waste produced

52.

What is global warming

a)

the normal temperature fluctuations of Earth's climate cycle

b)

the melting of the polar ice caps

c)

the trend of increasing temperatures on Earth

d)

the changes in Earth's biosphere that affect the atmosphere

53.

What is the carrying capacity of the graph?

a)

1000

b)

8000

c)

800

d)

600

54.

What happens if a population grows past its carrying capacity?

a)

The population keeps growing

b)

The population starts to die off

c)

The entire species will go extinct

d)

The carrying capacity just increases

55.

This may cause a population to increase

a)

increase of food supply

b)

removal of predators

c)

removal of disease

d)

all of these

56.

The largest number of individuals that an environment can support long term is...

a)

carrying capacity

b)

emigration

c)

immigration

d)

population density

57.

Something that regulates the size of a population is called...

a)

a limiting measure

b)

a limiting factor

c)

carrying capacity

d)

biodiversity

58.

What is the carrying capacity of the graph?

a)

around 500

b)

more than 800

c)

less than 300

d)

around 700

59.
Which of the following would INCREASE the carrying capacity of an ecosystem?
a)
increase in predators
b)
disease
c)
increase in available food
d)
drought
60.

When death rate is equal to birth rate...

a)

population increases

b)

population decreases

c)

population stays the same.

d)

population rapidly increases then becomes stable

61.

When the death rate rises and the birth rate lowers...

a)

population increases

b)

population decreases

c)

population stays the same

d)

all of these

62.

When birth rate is high and death rate is low...

a)

population increases

b)

population decreases

c)

population stays the same

d)

all of these

63.

This may cause a population to increase

a)

increase of food supply

b)

removal of predators

c)

removal of disease

d)

all of these

64.
If a disease destroying barley plants in a field swept through an ecosystem, what would happen to the barley eating bird population in the the field ?
a)
The bird population would stay the same
b)
The bird population would infinitely increase
c)
The bird population would decrease
65.

If the carrying capacity of a predator decreases, what will happen to the carrying capacity of the prey?

a)

Will Increase

b)

Will Decrease

c)

Will stay the same

66.
The largest number of individuals that an area can support is called its _______.
a)
limiting factor
b)
abiotic factor
c)
resource availability
d)
carrying capacity
67.

A scientist was studying a population of fish in a pond over a period of 10 years. He observed that

the population increased each year for 3 years, and then remained nearly constant for the rest of

the study. The best explanation for this observation is that the population had

a)

stopped reproducing

b)

reached carrying capacity

c)

mutated into a different species

d)

run out of food and all died

68.

What are factors that affect carrying capacity?

a)

Biotic only

b)

Biotic and abiotic

c)

Depends on the ecosystem

d)

Abiotic only

69.

Chemical process that animals and plants use to obtain energy.

a)

Transpiration

b)

Respiration

c)

Photosynthesis

d)

Percolation

e)

Denitrification

70.

One of the nutrient cycles moves from an atmospheric gaseous form to the soil through both abiotic and biotic processes, moves through the food web, then is returned to the soil or to the atmosphere. Which cycle fits this description?

a)

Nitrogen

b)

Carbon

c)

Phosphorus

d)

Water

71.

Which cycle is shown in this diagram?

a)

Nitrogen

b)

Carbon

c)

Phosphorus

d)

Water

e)

Oxygen

72.

Which cycle is shown in this diagram?

a)

Nitrogen

b)

Carbon

c)

Phosphorus

d)

Water

e)

Oxygen

73.

Which cycle is shown in this diagram?

a)

Nitrogen

b)

Carbon

c)

Phosphorus

d)

Water

e)

Oxygen

74.

Process by which liquid water turns into a vapor and is deposited into the atmosphere.

a)

Transpiration

b)

Respiration

c)

Photosynthesis

d)

Percolation

e)

Evaporation

75.

The slow settling of water through rocks and minerals in the soil.

a)

Transpiration

b)

Respiration

c)

Photosynthesis

d)

Percolation

e)

Evaporation

76.

Chemical process by which plants use sunlight to obtain sugars.

a)

Transpiration

b)

Respiration

c)

Photosynthesis

d)

Percolation

e)

Evaporation

77.

Process by which water is pulled through the xylem of plants.

a)

Transpiration

b)

Respiration

c)

Photosynthesis

d)

Percolation

e)

Evaporation

78.

Process by which water leaves the clouds and is deposited onto the ground by way of rain or snow.

a)

Weathering

b)

Run-Off

c)

Combustion

d)

Nitrogen-fixing

e)

Precipitation

79.

The burning of fossil fuels.

a)

Weathering

b)

Run-Off

c)

Combustion

d)

Nitrogen-fixing

e)

Precipitation

80.

Process by which water runs down the side of land or soil and is deposited into a body of water.

a)

Weathering

b)

Run-Off

c)

Combustion

d)

Nitrogen-fixing

e)

Precipitation

81.

Occurs when precipitation runs down rocks and mountains causing them to leech out minerals.

a)

Weathering

b)

Run-Off

c)

Combustion

d)

Nitrogen-fixing

e)

Precipitation

82.

Type of bacteria that will put Nitrogen back into the soil or transform it into a usable form.

a)

Weathering

b)

Run-Off

c)

Combustion

d)

Nitrogen-fixing

e)

Precipitation

83.

The process by which a substance moves from an area of high concentration to an area of low concentration.

a)

Diffusion

b)

Decomposers

c)

Detrivores

d)

Fossil fuels

e)

Denitrification

84.

Types of organisms that serve to break down inorganic waste and deposit into the soil.

a)

Diffusion

b)

Decomposers

c)

Detrivores

d)

Fossil fuels

e)

Denitrification

85.

Organic material (like coal and oil) that are the remnants of dead/decayed matter from millions of years ago.

a)

Diffusion

b)

Decomposers

c)

Detrivores

d)

Fossil fuels

e)

Denitrification

86.

Process by which nitrogen is extracted from the soil.

a)

Diffusion

b)

Decomposers

c)

Detrivores

d)

Fossil fuels

e)

Denitrification

87.

This is the equation for

a)

cellular respiration

b)

photosynthesis

88.
a)

Photosynthesis

b)

Cellular Respiration

89.

Deforestation means

a)

burning coal

b)

planting trees

c)

cutting down trees

d)

creating solar energy

90.

The reason why deforestation adds to the CO2 problem is that

a)

Trees use up CO2

b)

Trees release CO2

c)

Trees make energy

d)

Trees create sugar

91.

The burning of fossil fuels equations most closely resembles

a)

the photosynthesis equation

b)

the cellular respiration equation

92.
The cycling of matter is important because
a)
Matter can be created and destroyed
b)
Only a limited amount of matter is available so it has to be recycled
c)
Matter can only be found in a solution
d)
Bacteria use matter to convert organisms into solar energy
93.

Matter cycles through food webs and biogeochemical cycles.

a)

True

b)

False

94.

Matter can recycle through the biosphere because

a)

matter is passed out of the body as waste

b)

matter is assembled into chemical compounds

c)

biological systems do not use up matter, they transform it.

d)

biological systems use only carbon, oxygen, hydrogen, and nitrogen.

95.

Which of the following best describes the importance of biogeochemical cycles?

a)

They show how certain elements and compounds move through the environment and are continually used and recycled.

b)

They explain how energy moves through trophic levels of an ecosystem.

c)

They describe how the adaptations of organisms change based on environmental pressures.

d)

They chart how biotic changes destroy unstable ecosystems.

96.

The repeated movement of water between Earth’s surface and the atmosphere is called

a)

the water cycle

b)

the condensation cycle

c)

precipitation

d)

evaporation

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