Question 1

Decomposers provide mineral nutrients for:

Accepted Answer

A)  heterotrophs. 
B)  autotrophs. 
C)  the second trophic level. 
D)  the third trophic level. 
E)  omnivores 
A)  heterotrophs. 
B)  autotrophs. 
C)  the second trophic level. 
D)  the third trophic level. 
E)  omnivores B

Question 2

Which of the following is true about human interference with the Antarctic food web?

Accepted Answer

A)  Humans have had little impact on the Antarctic food web 
B)  Whaling was only a small contributor to the decline in krill population 
C)  There is still an abundance of pack ice to provide marine algae for krill 
D)  Low krill population increases the breeding success of penguins and fur seals 
E)  None of these choices is true 
A)  Humans have had little impact on the Antarctic food web 
B)  Whaling was only a small contributor to the decline in krill population 
C)  There is still an abundance of pack ice to provide marine algae for krill 
D)  Low krill population increases the breeding success of penguins and fur seals 
E)  None of these choices is true E

Question 3

Which of the following statements about energy is true?

Accepted Answer

A)  Organisms can reuse energy for biological work 
B)  Organisms can create the energy required to live 
C)  The energy present in the universe will always be the same amount 
D)  Energy cannot change from one form to another 
E)  None of these choices is true 
A)  Organisms can reuse energy for biological work 
B)  Organisms can create the energy required to live 
C)  The energy present in the universe will always be the same amount 
D)  Energy cannot change from one form to another 
E)  None of these choices is true C

Question 4

In a pyramid of numbers, the largest number of organisms would typically be found:

Accepted Answer

A)  at the highest end of the food chain, with each lower trophic level occupied by fewer organisms. 
B)  at the highest end of the food chain, with each lower trophic level having the same number of organisms. 
C)  at the lowest end of the food chain, with each successive trophic level occupied by fewer organisms. 
D)  at the lowest end of the food chain, with each successive trophic level having the same number of organisms. 
E)  None of these choices is correct 
A)  at the highest end of the food chain, with each lower trophic level occupied by fewer organisms. 
B)  at the highest end of the food chain, with each lower trophic level having the same number of organisms. 
C)  at the lowest end of the food chain, with each successive trophic level occupied by fewer organisms. 
D)  at the lowest end of the food chain, with each successive trophic level having the same number of organisms. 
E)  None of these choices is correct

Question 5

The chlorophyll in producers captures _________, and transforms this to chemical energy stored in __________ .

Accepted Answer

A)  electrons; waste products 
B)  light energy; organic compounds such as carbohydrates 
C)  nuclear energy; chemicals such as DNA 
D)  light energy; the ozone 
E)  heat energy; the ability to do work 
A)  electrons; waste products 
B)  light energy; organic compounds such as carbohydrates 
C)  nuclear energy; chemicals such as DNA 
D)  light energy; the ozone 
E)  heat energy; the ability to do work

Question 6

Consider the city or town that you live in. Is it an example of an open system or a closed system? Explain your answer.

Accepted Answer

Cities and towns are open systems, becau

Question 7

The major biological source of oxygen, which many organisms require when they break down glucose, is actually a by-product of:

Accepted Answer

A)  cellular respiration 
B)  chemosynthesis 
C)  entropy 
D)  photosynthesis 
E)  global warming 
A)  cellular respiration 
B)  chemosynthesis 
C)  entropy 
D)  photosynthesis 
E)  global warming

Question 8

A primary consumer would eat:

Accepted Answer

A)  secondary consumers. 
B)  plants. 
C)  Bacteria. 
D)  herbivores. 
E)  rabbits. 
A)  secondary consumers. 
B)  plants. 
C)  Bacteria. 
D)  herbivores. 
E)  rabbits.

Question 9

An example of a biotic component of an ecosystem is

Accepted Answer

A)  the climate 
B)  a community 
C)  water 
D)  synthetic pesticide 
E)  rock 
A)  the climate 
B)  a community 
C)  water 
D)  synthetic pesticide 
E)  rock

Question 10

Which represents the interlocking of food chains which connects organisms in an ecosystem?

Accepted Answer

A)  community 
B)  trophic level 
C)  food web 
D)  symbiosis 
E)  saprotrophy 
A)  community 
B)  trophic level 
C)  food web 
D)  symbiosis 
E)  saprotrophy

Question 11

One _________ is the amount of energy required to raise the temperature of 1 kg of water by 1 degrees Celsius?

Accepted Answer

A)  kilojoules 
B)  molecule 
C)  atomic nuclei 
D)  thermodynamic 
E)  kilocalorie 
A)  kilojoules 
B)  molecule 
C)  atomic nuclei 
D)  thermodynamic 
E)  kilocalorie

Question 12

Briefly explain the process of cellular respiration and uses of the energy obtained from the process. Your answer should include the following terms: glucose, water, carbon dioxide, chemical energy, and oxygen. What organisms carry on this process?

Accepted Answer

Cellular respiration is the process of r

Question 13

Landscape ecology:

Accepted Answer

A)  is the study of human-designed communities. 
B)  examines the influences of human activity on natural ecosystems. 
C)  is exclusively concerned with terrestrial ecosystems. 
D)  studies spatial patterns of ecological processes operating over large areas. 
E)  None of these choices is correct 
A)  is the study of human-designed communities. 
B)  examines the influences of human activity on natural ecosystems. 
C)  is exclusively concerned with terrestrial ecosystems. 
D)  studies spatial patterns of ecological processes operating over large areas. 
E)  None of these choices is correct

Question 14

In a pyramid of energy, the lowest quantity of energy (kcal per m2), would be found in the:

Accepted Answer

A)  producers. 
B)  primary consumers. 
C)  secondary consumers. 
D)  tertiary consumers. 
E)  herbivores. 
A)  producers. 
B)  primary consumers. 
C)  secondary consumers. 
D)  tertiary consumers. 
E)  herbivores.

Question 15

Cellular respiration occurs in both plant and animal cells while photosynthesis only occurs in plant cells. How are plants and animals connected via these two processes? Be sure to include balanced chemical equations as part of your answer.

Accepted Answer

In photosynthesis: 6CO2 + 12H2O + sun's

Question 16

A species is defined as:

Accepted Answer

A)  organisms that live together. 
B)  organisms that live in the same area at the same time. 
C)  a group of similar organisms whose members freely interbreed with one another. 
D)  all of the organisms that live together in an area, plus the physical environment that they live in. 
E)  all organisms at a given trophic level within a particular community. 
A)  organisms that live together. 
B)  organisms that live in the same area at the same time. 
C)  a group of similar organisms whose members freely interbreed with one another. 
D)  all of the organisms that live together in an area, plus the physical environment that they live in. 
E)  all organisms at a given trophic level within a particular community.

Question 17

The dominant herbivores in the Antarctic food web are:

Accepted Answer

A)  baleen whales. 
B)  squid. 
C)  krill. 
D)  king and emperor penguins. 
E)  barnacles and mussels. 
A)  baleen whales. 
B)  squid. 
C)  krill. 
D)  king and emperor penguins. 
E)  barnacles and mussels.

Question 18

Energy:

Accepted Answer

A)  recycles continuously through an ecosystem. 
B)  is used over and over again. 
C)  flows in only one direction through an ecosystem. 
D)  tends to be concentrated by living organisms. 
E)  is efficiently transferred between trophic levels. 
A)  recycles continuously through an ecosystem. 
B)  is used over and over again. 
C)  flows in only one direction through an ecosystem. 
D)  tends to be concentrated by living organisms. 
E)  is efficiently transferred between trophic levels.

Question 19

The chemical energy stored in a plant is an example of:

Accepted Answer

A)  kinetic energy. 
B)  nuclear energy. 
C)  solar energy. 
D)  potential energy. 
E)  radiant energy. 
A)  kinetic energy. 
B)  nuclear energy. 
C)  solar energy. 
D)  potential energy. 
E)  radiant energy.

Question 20

Carbohydrates are not:

Accepted Answer

A)  stored potential energy. 
B)  made mostly of nitrogen and carbon. 
C)  broken down by cellular respiration. 
D)  made by producers. 
E)  used by decomposers. 
A)  stored potential energy. 
B)  made mostly of nitrogen and carbon. 
C)  broken down by cellular respiration. 
D)  made by producers. 
E)  used by decomposers.

Exam 3: Ecosystems and Energy

Decomposers provide mineral nutrients for:

Which of the following is true about human interference with the Antarctic food web?

Which of the following statements about energy is true?

In a pyramid of numbers, the largest number of organisms would typically be found:

The chlorophyll in producers captures _________, and transforms this to chemical energy stored in __________ .

Consider the city or town that you live in. Is it an example of an open system or a closed system? Explain your answer.

The major biological source of oxygen, which many organisms require when they break down glucose, is actually a by-product of:

A primary consumer would eat:

An example of a biotic component of an ecosystem is

Which represents the interlocking of food chains which connects organisms in an ecosystem?

One _________ is the amount of energy required to raise the temperature of 1 kg of water by 1 degrees Celsius?

Briefly explain the process of cellular respiration and uses of the energy obtained from the process. Your answer should include the following terms: glucose, water, carbon dioxide, chemical energy, and oxygen. What organisms carry on this process?

Landscape ecology:

In a pyramid of energy, the lowest quantity of energy (kcal per m2), would be found in the:

Cellular respiration occurs in both plant and animal cells while photosynthesis only occurs in plant cells. How are plants and animals connected via these two processes? Be sure to include balanced chemical equations as part of your answer.

A species is defined as:

The dominant herbivores in the Antarctic food web are:

Energy:

The chemical energy stored in a plant is an example of:

Carbohydrates are not:

Introducing Environmental Science and Sustainability

Environmental Laws Economic and Ethics

Ecosystems and the Physical Environment

Ecosystems and Living Organisms

Major Ecosystems of the World

Human Health and Environmental Toxicology

The Human Population

The Urban World

Energy Consumption

Fossil Fuels

Renewable Energy and Nuclear Power

Water: a Limited Resource

Soil Resources

Mineral Resources

Biological Resources

Land Resources

Food Resources

Air Pollution

Global Climate Change

Water Pollution

Pest Management

Solid and Hazardous Waste

Tomorrows Word

Filters

The chlorophyll in producers captures _, and transforms this to chemical energy stored in __ .