Week 5: Energy Transformation Answers

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1
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Every time energy is transferred between organisms in a food web, some of the energy is lost as heat.

A
T
B
F
2
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Which individual would be the safest from a lightening strike?

A
a person standing 8 miles away
B
a person on a bike 8 miles away
C
a person in a tent 8 miles away
D
a person in a house 8 miles away
3

Which of the following is not true concerning the flow of energy through an ecosystem?

A
Most solar energy is used in photosynthesis.
B
Photosynthesis and cellular respiration are performed by plants.
C
Not all solar energy is used for photosynthesis.
D
Most of the energy from photosynthesis flows out as heat.
4

Which of the following is a product of respiration resulting from the breaking of carbon-carbon bonds?

A
glucose
B
oxygen
C
carbon dioxide
D
all of the above
5

The energy used for metabolic processes reduces the efficiency of secondary productivity.

A
T
B
F
6

The energy value listed for foods refers to the _______.

A
total amount of chemical energy in the food
B
amount of energy available as fuel for the body
C
total nutritional value of the food
D
amount of carbohydrates
7

Which of the following best describes the fate of energy in ecosystems?

A
It will ultimately be recycled back into the ecosystem.
B
It flows from secondary consumers to primary consumers.
C
It enters most ecosystems in the form of sunlight.
D
It flows through and is used by ecosystems.
8

Heterotrophs convert solar energy into chemical energy.

A
T
B
F
9

Most energy enters ecosystems in the form of sunlight.

A
T
B
F
10

Energy must be transformed in ecosystems because _______.

A
energy cannot be created or destroyed
B
an organism’s energy must go somewhere
C
an organism’s energy must come from somewhere
D
all of the above

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