Question 1

The concentration of the pesticide DDT is likely lowest in which of the following?

Accepted Answer

A) a seagull 
B) a minnow 
C) a mosquito larvae 
D) algae 
E) plankton 
A) a seagull 
B) a minnow 
C) a mosquito larvae 
D) algae 
E) plankton

Question 2

Which of the following ecosystems has a very high net primary productivity?

Accepted Answer

A) desert 
B) tropical rain forest 
C) temperate forest 
D) boreal forest 
E) tundra 
A) desert 
B) tropical rain forest 
C) temperate forest 
D) boreal forest 
E) tundra

Question 3

As temperatures in the Arctic rise,which of the following changes may occur?

Accepted Answer

A) Tundra will be replaced by taigA. 
B) Taiga will be replaced by tundra. 
C) Temperate forest will be replaced by taiga. 
D) Tundra will be replaced by desert. 
E) Taiga will be replaced by temperate rain forest. 
A) Tundra will be replaced by taigA. 
B) Taiga will be replaced by tundra. 
C) Temperate forest will be replaced by taiga. 
D) Tundra will be replaced by desert. 
E) Taiga will be replaced by temperate rain forest.

Question 4

In the section "Investigating Life: Two Kingdoms and a Virus Team Up to Beat the Heat",how was the virus detected?

Accepted Answer

A) by the presence of antibodies to the virus 
B) by the presence of double-stranded RNA 
C) by signs of infection 
D) by the ability to grow at 65$\circ$C 
E) by the presence of viral proteins 
A) by the presence of antibodies to the virus 
B) by the presence of double-stranded RNA 
C) by signs of infection 
D) by the ability to grow at 65$\circ$C 
E) by the presence of viral proteins

Question 5

A grassland biome

Accepted Answer

A) consists of mostly coniferous trees. 
B) has nutrient-rich soil. 
C) has a long growing season. 
D) is warm and dry. 
E) consists of mosses and lichens. 
A) consists of mostly coniferous trees. 
B) has nutrient-rich soil. 
C) has a long growing season. 
D) is warm and dry. 
E) consists of mosses and lichens.

Question 6

The major types of ecosystems are termed

Accepted Answer

A) habitats. 
B) niches. 
C) biospheres. 
D) terrestrial zones. 
E) biomes. 
A) habitats. 
B) niches. 
C) biospheres. 
D) terrestrial zones. 
E) biomes.

Question 7

A coral reef is a complex ______ of calcium carbonate shells that are home to microbes,algae,invertebrates,and fishes.

Accepted Answer

A) ecosystem 
B) community 
C) biome 
D) population 
E) niche 
A) ecosystem 
B) community 
C) biome 
D) population 
E) niche

Question 8

"Net primary productivity" is

Accepted Answer

A) the amount of energy used in metabolism by producers. 
B) the amount of energy given off as heat by producers. 
C) the amount of energy trapped by the autotrophs of an ecosystem. 
D) the amount of energy available for consumers. 
E) the amount of energy used in metabolism by consumers. 
A) the amount of energy used in metabolism by producers. 
B) the amount of energy given off as heat by producers. 
C) the amount of energy trapped by the autotrophs of an ecosystem. 
D) the amount of energy available for consumers. 
E) the amount of energy used in metabolism by consumers.

Question 9

Which of the following is NOT a characteristic of tundra?

Accepted Answer

A) high latitude 
B) permafrost 
C) contains conifers 
D) contains mosses and lichens 
E) short growing season for plants 
A) high latitude 
B) permafrost 
C) contains conifers 
D) contains mosses and lichens 
E) short growing season for plants

Question 10

The diversity in a kelp forest community can be measured by

Accepted Answer

A) the number of kelp living in the community. 
B) the number of fishes living in the community. 
C) the abiotic resources utilized by the community. 
D) the number of niches in the community. 
E) the number of different species of living organisms in the community. 
A) the number of kelp living in the community. 
B) the number of fishes living in the community. 
C) the abiotic resources utilized by the community. 
D) the number of niches in the community. 
E) the number of different species of living organisms in the community.

Question 11

As you climb the mountain,why are the biomes changing?

Accepted Answer

A) The air is thinner. 
B) The latitude is changing. 
C) More rain falls in a rain shadow. 
D) Some animals live better at higher elevations. 
E) It is colder. 
A) The air is thinner. 
B) The latitude is changing. 
C) More rain falls in a rain shadow. 
D) Some animals live better at higher elevations. 
E) It is colder.

Question 12

Nitrogen-fixing bacteria in the roots of soybeans help provide a source of nitrogen to the plants,and in exchange,the bacteria obtain food from the plants.Which reaction can these bacteria catalyze?

Accepted Answer

A) nitrogen gas (N2)to nitrate (NO3) 
B) ammonium (NH4+)to nitrate (NO3) 
C) nitrogen gas (N2)to ammonium (NH4+) 
D) nitrate (NO3)to ammonium (NH4+) 
E) nitrate (NO3)to nitrogen gas (N2) 
A) nitrogen gas (N2)to nitrate (NO3) 
B) ammonium (NH4+)to nitrate (NO3) 
C) nitrogen gas (N2)to ammonium (NH4+) 
D) nitrate (NO3)to ammonium (NH4+) 
E) nitrate (NO3)to nitrogen gas (N2)

Question 13

A relationship between different species in which one species lives in or on another is

Accepted Answer

A) resource partitioning. 
B) coevolution. 
C) symbiosis. 
D) predation. 
E) niche sharing. 
A) resource partitioning. 
B) coevolution. 
C) symbiosis. 
D) predation. 
E) niche sharing.

Question 14

Biomagnification occurs with chemicals that

Accepted Answer

A) dissolve in only acidic solvents. 
B) dissolve in water. 
C) are not readily degraded and dissolve in fat. 
D) are not readily degraded and dissolve in water. 
E) dissolve in only basic solvents. 
A) dissolve in only acidic solvents. 
B) dissolve in water. 
C) are not readily degraded and dissolve in fat. 
D) are not readily degraded and dissolve in water. 
E) dissolve in only basic solvents.

Question 15

What is a challenge that organisms living in an intertidal zone face that other aquatic organisms normally do not face?

Accepted Answer

A) damage from pollution 
B) changes in temperature at different depths 
C) movement of water 
D) light penetrating only through the photic zone 
E) daily changes in water depth 
A) damage from pollution 
B) changes in temperature at different depths 
C) movement of water 
D) light penetrating only through the photic zone 
E) daily changes in water depth

Question 16

After a person has taken antibiotics to treat a yeast infection in the genitourinary tract,the yeast infection lessens and the microbes that are normally present reestablish themselves.The reason for the lessening of the yeast infection is explained by

Accepted Answer

A) predation. 
B) symbiosis. 
C) the competitive exclusion principle. 
D) the co-inclusion principle. 
E) endosymbiosis. 
A) predation. 
B) symbiosis. 
C) the competitive exclusion principle. 
D) the co-inclusion principle. 
E) endosymbiosis.

Question 17

Coral obtains energy

Accepted Answer

A) by capturing and digesting small animals and through symbiosis with photosynthetic algae. 
B) by capturing and digesting small animals. 
C) through symbiosis with photosynthetic algae. 
D) by performing photosynthesis. 
E) by performing photosynthesis and capturing and digesting small animals. 
A) by capturing and digesting small animals and through symbiosis with photosynthetic algae. 
B) by capturing and digesting small animals. 
C) through symbiosis with photosynthetic algae. 
D) by performing photosynthesis. 
E) by performing photosynthesis and capturing and digesting small animals.

Exam 19: Communities and Ecosystems

The concentration of the pesticide DDT is likely lowest in which of the following?

Which of the following ecosystems has a very high net primary productivity?

As temperatures in the Arctic rise,which of the following changes may occur?

In the section "Investigating Life: Two Kingdoms and a Virus Team Up to Beat the Heat",how was the virus detected?

A grassland biome

The major types of ecosystems are termed

A coral reef is a complex ______ of calcium carbonate shells that are home to microbes,algae,invertebrates,and fishes.

"Net primary productivity" is

Which of the following is NOT a characteristic of tundra?

The diversity in a kelp forest community can be measured by

As you climb the mountain,why are the biomes changing?

Nitrogen-fixing bacteria in the roots of soybeans help provide a source of nitrogen to the plants,and in exchange,the bacteria obtain food from the plants.Which reaction can these bacteria catalyze?

A relationship between different species in which one species lives in or on another is

Biomagnification occurs with chemicals that

What is a challenge that organisms living in an intertidal zone face that other aquatic organisms normally do not face?

After a person has taken antibiotics to treat a yeast infection in the genitourinary tract,the yeast infection lessens and the microbes that are normally present reestablish themselves.The reason for the lessening of the yeast infection is explained by

Coral obtains energy

Scientific Study of Life

The Chemistry of Life

Cells

The Energy of Life

Photosynthesis

How Cells Release Energy

DNA Structure and Gene Function

DNA Replication and Cell Division

Sexual Reproduction and Meiosis

Patterns of Inheritance

DNA Technology

Forces of Evolutionary Change

Evidence of Evolution

Speciation and Extinction

Evolution and Diversity of Microbial Life

Evolution and Diversity of Plants

Evolution and Diversity of Animals

Population Ecology

Preserving Biodiversity

Plant Form and Function

Reproduction and Development of Flowering Plants

Animal Tissues and Organ Systems

Nervous System and the Senses

The Endocrine System

The Skeletal and Muscular Systems

The Circulatory and Respiratory Systems

Regulating Temperature, nutrients, and Body Fluids

The Immune System

Animal Reproduction and Development

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