Question 1

A demonstration of the second law of thermodynamics is

Accepted Answer

A)  the amount of energy coming from the sun. 
B)  that carnivores require more energy than herbivores. 
C)  that there is more producer biomass than herbivore biomass in an ecosystem. 
D)  the high proportion of protein in the diets of Americans. 
A)  the amount of energy coming from the sun. 
B)  that carnivores require more energy than herbivores. 
C)  that there is more producer biomass than herbivore biomass in an ecosystem. 
D)  the high proportion of protein in the diets of Americans.

Question 2

Plants get the nitrogen they need to build additional cells from

Accepted Answer

A)  protein in the cells. 
B)  ammonia or nitrate in the soil. 
C)  denitrifying bacteria. 
D)  directly from the nitrogen in air. 
A)  protein in the cells. 
B)  ammonia or nitrate in the soil. 
C)  denitrifying bacteria. 
D)  directly from the nitrogen in air.

Question 3

In general, there is about a ______ percent loss of energy as we proceed from one trophic level to the next higher level.

Accepted Answer

A)  90 
B)  80 
C)  60 
D)  50 
A)  90 
B)  80 
C)  60 
D)  50

Question 4

Nitrites (--NO2) are converted to nitrogen gas (N2) by

Accepted Answer

A)  decomposers. 
B)  nitrogen-fixing bacteria. 
C)  nitrifying bacteria. 
D)  denitrifying bacteria. 
A)  decomposers. 
B)  nitrogen-fixing bacteria. 
C)  nitrifying bacteria. 
D)  denitrifying bacteria.

Question 5

The loss of water from the surface of plants is

Accepted Answer

A)  transpiration. 
B)  dew. 
C)  biomagnification. 
D)  bioaccumulation. 
A)  transpiration. 
B)  dew. 
C)  biomagnification. 
D)  bioaccumulation.

Question 6

An animal that eats both plants and animals is

Accepted Answer

A)  a herbivore. 
B)  an omnivore. 
C)  a carnivore. 
D)  decomposer. 
A)  a herbivore. 
B)  an omnivore. 
C)  a carnivore. 
D)  decomposer.

Question 7

The amount of rain an area gets is part of an organism's

Accepted Answer

A)  biotic factors. 
B)  abiotic factors. 
C)  community. 
D)  succession. 
A)  biotic factors. 
B)  abiotic factors. 
C)  community. 
D)  succession.

Question 8

Which of the following is part of the abiotic environment of an organism?

Accepted Answer

A)  grass 
B)  rain 
C)  food 
D)  decomposers 
A)  grass 
B)  rain 
C)  food 
D)  decomposers

Question 9

The carbon found in carnivores would follow which of the following paths?

Accepted Answer

A)  plant $\rightarrow$air $\rightarrow$carnivore 
B)  herbivore $\rightarrow$ plant $\rightarrow$ air$\rightarrow$ carnivore 
C)  air $\rightarrow$ bacteria $\rightarrow$ plant $\rightarrow$ herbivore $\rightarrow$carnivore 
D)  air $\rightarrow$ plant $\rightarrow$herbivore $\rightarrow$carnivore 
A)  plant $\rightarrow$air $\rightarrow$carnivore 
B)  herbivore $\rightarrow$ plant $\rightarrow$ air$\rightarrow$ carnivore 
C)  air $\rightarrow$ bacteria $\rightarrow$ plant $\rightarrow$ herbivore $\rightarrow$carnivore 
D)  air $\rightarrow$ plant $\rightarrow$herbivore $\rightarrow$carnivore

Question 10

____ in the figure diagram above represent consumers.

Accepted Answer

A)  Only the plants 
B)  Only the insects 
C)  Everything except trees 
D)  Spiders, frogs, fish, and humans 
A)  Only the plants 
B)  Only the insects 
C)  Everything except trees 
D)  Spiders, frogs, fish, and humans

Question 11

A pyramid of numbers gives a reasonably accurate representation of the relationship between trophic levels when

Accepted Answer

A)  all the organisms are consumers. 
B)  all the organisms are about the same size. 
C)  all the organisms are the same age. 
D)  all the animals are carnivores. 
A)  all the organisms are consumers. 
B)  all the organisms are about the same size. 
C)  all the organisms are the same age. 
D)  all the animals are carnivores.

Question 12

As represented in the diagram above, which of the following organisms are carnivores?

Accepted Answer

A)  human and fish only 
B)  human, fish, and frog only 
C)  human, fish, frog, and spider only 
D)  human, fish, frog, spider, and insect only 
A)  human and fish only 
B)  human, fish, and frog only 
C)  human, fish, frog, and spider only 
D)  human, fish, frog, spider, and insect only

Question 13

Phosphorus is needed by organisms for

Accepted Answer

A)  DNA. 
B)  bones. 
C)  cell membranes. 
D)  All of these answers are correct. 
A)  DNA. 
B)  bones. 
C)  cell membranes. 
D)  All of these answers are correct.

Question 14

Each trophic level represents approximately a _____ percent energy ____.

Accepted Answer

A)  10; loss 
B)  90; transfer 
C)  50: loss 
D)  90; loss 
A)  10; loss 
B)  90; transfer 
C)  50: loss 
D)  90; loss

Question 15

The spiders in the diagram above are

Accepted Answer

A)  tertiary consumers. 
B)  herbivores. 
C)  at the third trophic level. 
D)  omnivores. 
A)  tertiary consumers. 
B)  herbivores. 
C)  at the third trophic level. 
D)  omnivores.

Question 16

A food chain always begins with

Accepted Answer

A)  sympathetic decomposers. 
B)  photosynthetic autotrophs. 
C)  pathetic instructors. 
D)  heterotrophic consumers. 
A)  sympathetic decomposers. 
B)  photosynthetic autotrophs. 
C)  pathetic instructors. 
D)  heterotrophic consumers.

Question 17

The following sequence of organisms is not an accurate representation of a community in that frogs could actually feed upon insects or spiders, fish could feed on either frogs or insects, and humans enjoy fish, frogs, tree products, and, in some cases, even insects. A more complete representation of these interactions would be a(n) trees $\rightarrow$ insects $\rightarrow$spiders $\rightarrow$frogs $\rightarrow$ fish $\rightarrow$ human

Accepted Answer

A)  energy pyramid. 
B)  food chain. 
C)  biome schematic. 
D)  food web. 
A)  energy pyramid. 
B)  food chain. 
C)  biome schematic. 
D)  food web.

Question 18

Since snakes, people, and fish all like to eat frogs, this is an example of a

Accepted Answer

A)  food web. 
B)  food chain. 
C)  preference test. 
D)  trophic level variation. 
A)  food web. 
B)  food chain. 
C)  preference test. 
D)  trophic level variation.

Question 19

Which of the following is NOT recycled?

Accepted Answer

A)  nitrogen 
B)  water 
C)  energy 
D)  carbon 
A)  nitrogen 
B)  water 
C)  energy 
D)  carbon

Question 20

Climate change (global warming) is directly related to

Accepted Answer

A)  the amount of carbon dioxide in the atmosphere. 
B)  humans eating protein. 
C)  the loss of carbon dioxide from the oceans. 
D)  the size of the human population. 
A)  the amount of carbon dioxide in the atmosphere. 
B)  humans eating protein. 
C)  the loss of carbon dioxide from the oceans. 
D)  the size of the human population.

Exam 15: Ecosystem Dynamics: The Flow of Energy and Matter

A demonstration of the second law of thermodynamics is

Plants get the nitrogen they need to build additional cells from

In general, there is about a ______ percent loss of energy as we proceed from one trophic level to the next higher level.

Nitrites (--NO2) are converted to nitrogen gas (N2) by

The loss of water from the surface of plants is

An animal that eats both plants and animals is

The amount of rain an area gets is part of an organism's

Which of the following is part of the abiotic environment of an organism?

The carbon found in carnivores would follow which of the following paths?

____ in the figure diagram above represent consumers.

A pyramid of numbers gives a reasonably accurate representation of the relationship between trophic levels when

As represented in the diagram above, which of the following organisms are carnivores?

Phosphorus is needed by organisms for

Each trophic level represents approximately a _____ percent energy ____.

The spiders in the diagram above are

A food chain always begins with

Since snakes, people, and fish all like to eat frogs, this is an example of a

Which of the following is NOT recycled?

Climate change (global warming) is directly related to

What Is Biology

The Basics of Life: Chemistry

Organic Molecules: The Molecules of Life

Cell Structure and Function

Enzymes, Coenzymes, and Energy

Biochemical Pathways: Cellular Respiration

Biochemical Pathways: Photosynthesis

DNA and RNA: The Molecular Basis of Heredity

Cell Division: Proliferation and Reproduction

Patterns of Inheritance

Applications of Biotechnology

Diversity Within Species and Population Genetics

Evolution and Natural Selection

The Formation of Species and Evolutionary Change

Community Interactions

Population Ecology

Evolutionary and Ecological Aspects of Behavior

The Origin of Life and the Evolution of Cells

The Classification and Evolution of Organisms

The Nature of Microorganisms

The Plant Kingdom

The Animal Kingdom

Materials Exchange in the Body

Nutrition: Food and Diet

The Bodys Control Mechanisms and Immunity

Human Reproduction, Sex, and Sexuality

Filters

Nitrites (--NO₂) are converted to nitrogen gas (N₂) by

Each trophic level represents approximately a _ percent energy .