Energy Transfer

Question 1

Energy in most ecosystems must flow through autotrophs because ______.a.only autotrophs can convert solar energy into chemical energyb.autotrophs are simpler organisms than heterotrophsc.heterotrophs only generate a small fraction of their energy from photosynthesis.d.all of the above

Revolt · Accepted Answer

A: A

Question 2

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

Revolt · Accepted Answer

A: T

Question 3

Explain why lightning strikes can be dangerous even when an individual is not directly
struck.

Revolt · Accepted Answer

Lightning strikes are dangerous whether an individual is or is not in the path of the discharge. The current propagated by a lightning strike is actually what is harmful and the current can pass through the ground after striking. This means that even near-misses can be dangerous as the current travels through the ground.

Question 4

Primary producers generally form the smallest trophic level of a pyramid of energy.

Revolt · Accepted Answer

B: F

Question 5

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 Please select the best answer from the choices provided

Question 6

The energy value listed for foods refers to the _______.a.total amount of chemical energy in the foodb.amount of energy available as fuel for the bodyc.total nutritional value of the foodd.amount of carbohydrates

Revolt · Accepted Answer

B: B

Question 7

Which of the following best describes the solar radiation absorbed by and radiated from earth?a.Most incoming solar energy is absorbed by the atmosphere.b.Only a small fraction of energy radiating from Earth is from the atmosphere.c.The Earth’s surface is responsible for a small fraction of heat radiation to space.d.Earth’s surface absorbs little of the energy that strikes as solar radiation.

Revolt · Accepted Answer

C: C

Question 8

Question is locked

Revolt · Accepted Answer

Organisms must gather energy to survive. This energy can come in different forms, depending upon whether the organism is an autotroph and gathers its energy from sunlight or a consumer that feeds upon autotrophs and/or other consumers. Processing plant and animal matter into usable chemical energy in this way requires transforming it. Plant matter is transformed by herbivores which are transformed by carnivores, maintaining the food webs that support an ecosystem.

Question 9

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.

Revolt · Accepted Answer

D: D

Question 10

Energy in most ecosystems must flow through autotrophs because ______.a.only autotrophs can convert solar energy into chemical energyb.autotrophs are simpler organisms than heterotrophsc.heterotrophs only generate a small fraction of their energy from photosynthesis.d.all of the above

Energy Transfer Answers

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