Question 1

The sun's energy is produced by:

Accepted Answer

A)  nuclear fission reactions. 
B)  nuclear fusion reactions. 
C)  electromagnetic radiation. 
D)  ultraviolet radiation. 
E)  infrared radiation. 
A)  nuclear fission reactions. 
B)  nuclear fusion reactions. 
C)  electromagnetic radiation. 
D)  ultraviolet radiation. 
E)  infrared radiation.

Question 2

The effect of DDT on birds is a result of which three characteristics of DDT?

Accepted Answer

A)  metabolism, persistence, and biological magnification 
B)  bioaccumulation, metabolism, and resistance 
C)  biological magnification, resistance, and persistence 
D)  persistence, bioaccumulation, and biological magnification 
E)  metabolism, resistance, and biological magnification 
A)  metabolism, persistence, and biological magnification 
B)  bioaccumulation, metabolism, and resistance 
C)  biological magnification, resistance, and persistence 
D)  persistence, bioaccumulation, and biological magnification 
E)  metabolism, resistance, and biological magnification

Question 3

Which trophic level would contain the lowest quantity of energy (kcal per m2)?

Accepted Answer

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

Question 4

How are bacteria important to the genus Rhizobium ?

Accepted Answer

A)  They provide fixed carbon dioxide to legumes. 
B)  They provide fixed nitrogen to legumes. 
C)  They carry out photosynthesis. 
D)  They carry out respiration. 
E)  They carry out decomposition.. 
A)  They provide fixed carbon dioxide to legumes. 
B)  They provide fixed nitrogen to legumes. 
C)  They carry out photosynthesis. 
D)  They carry out respiration. 
E)  They carry out decomposition..

Question 5

The organisms occupying the base of a pyramid of energy are autotrophs . 
____________________

Accepted Answer

A) True 
 B)False

Question 6

The enzyme nitrogenase is rather unique, as it specifically functions in the:

Accepted Answer

A)  absence of oxygen. 
B)  absence of nitrogen. 
C)  absence of carbon dioxide. 
D)  presence of oxygen. 
E)  presence of carbon dioxide. 
A)  absence of oxygen. 
B)  absence of nitrogen. 
C)  absence of carbon dioxide. 
D)  presence of oxygen. 
E)  presence of carbon dioxide.

Question 7

GPP, or Gross Primary Productivity:

Accepted Answer

A)  is the energy that remains in a plant after photosynthesis 
B)  is the total energy captured from the sun through photosynthesis 
C)  is the rate at which excess plant energy is converted to tissue for growth 
D)  is the amount of energy available for primary consumers 
E)  represents approximately 80% of the energy captured from the sun 
A)  is the energy that remains in a plant after photosynthesis 
B)  is the total energy captured from the sun through photosynthesis 
C)  is the rate at which excess plant energy is converted to tissue for growth 
D)  is the amount of energy available for primary consumers 
E)  represents approximately 80% of the energy captured from the sun

Question 8

In the carbon cycle, one of the ways in which carbon is returned to the atmosphere is by respiration . 
____________________

Accepted Answer

A) True 
 B)False

Question 9

Identify and describe three beneficial impacts of fire on certain ecosystems.

Accepted Answer

Fire frees the minerals locked in organi

Question 10

The clockwise gyre of surface ocean currents in the North Atlantic results in:

Accepted Answer

A)  warmer water on Atlantic beaches of North America than Pacific beaches of the same latitude. 
B)  cooler water on Atlantic beaches of North America than Pacific beaches of the same latitude. 
C)  a clockwise gyre in the South Atlantic. 
D)  a circumpolar flow of water in the Northern Hemisphere. 
E)  prevailing trade winds. 
A)  warmer water on Atlantic beaches of North America than Pacific beaches of the same latitude. 
B)  cooler water on Atlantic beaches of North America than Pacific beaches of the same latitude. 
C)  a clockwise gyre in the South Atlantic. 
D)  a circumpolar flow of water in the Northern Hemisphere. 
E)  prevailing trade winds.

Question 11

Bacteria are most essential in the cycling of:

Accepted Answer

A)  carbon. 
B)  water. 
C)  phosphorus. 
D)  nitrogen. 
E)  energy. 
A)  carbon. 
B)  water. 
C)  phosphorus. 
D)  nitrogen. 
E)  energy.

Question 12

During the cycling of phosphorus, phosphorus does not enter ____ in appreciable amounts.

Accepted Answer

A)  the atmosphere 
B)  the groundwater 
C)  organisms 
D)  marine sediments 
E)  the ocean 
A)  the atmosphere 
B)  the groundwater 
C)  organisms 
D)  marine sediments 
E)  the ocean

Question 13

Four of the five statements below apply to the phosphorus cycle. Which one does not apply?

Accepted Answer

A)  Phosphorus cycles from land to water and back again. 
B)  Phosphorus does not exist in a gaseous state. 
C)  Dissolved phosphorus enters aquatic ecosystems from the atmosphere. 
D)  Phosphorus will probably be depleted during the 21st century. 
E)  Erosion from clear-cutting and agriculture accelerate phosphorus loss. 
A)  Phosphorus cycles from land to water and back again. 
B)  Phosphorus does not exist in a gaseous state. 
C)  Dissolved phosphorus enters aquatic ecosystems from the atmosphere. 
D)  Phosphorus will probably be depleted during the 21st century. 
E)  Erosion from clear-cutting and agriculture accelerate phosphorus loss.

Question 14

The main steps of the nitrogen cycle are:

Accepted Answer

A)  nitrogen fixation, nitrification, assimilation, digestion, and denitrification. 
B)  nitrigenation, nitrification, assimilation, ammonification, and denitrification. 
C)  nitrogen fixation, nitrification, assimilation, ammonification, and dinitrification. 
D)  nitrogen fixation, nitrification, assimilation, carbonation, and denitrification. 
E)  nitrogen fixation, oxidation, assimilation, ammonification, and denitrification. 
A)  nitrogen fixation, nitrification, assimilation, digestion, and denitrification. 
B)  nitrigenation, nitrification, assimilation, ammonification, and denitrification. 
C)  nitrogen fixation, nitrification, assimilation, ammonification, and dinitrification. 
D)  nitrogen fixation, nitrification, assimilation, carbonation, and denitrification. 
E)  nitrogen fixation, oxidation, assimilation, ammonification, and denitrification.

Question 15

In considering a pyramid of biomass, explain why a large producer biomass is needed to support a population of carnivores.

Accepted Answer

Each trophic level on a biomass pyramid

Question 16

About __________ of the total energy the sun releases strikes the atmosphere.

Accepted Answer

A)  one-tenth 
B)  one-hundredth 
C)  one-thousandth 
D)  one-millionth 
E)  one-billionth 
A)  one-tenth 
B)  one-hundredth 
C)  one-thousandth 
D)  one-millionth 
E)  one-billionth

Question 17

The seasons are determined primarily by Earth's tilt . 
____________________

Accepted Answer

A) True 
 B)False

Question 18

Which process plays the most important role in the phosphorous cycle?

Accepted Answer

A)  cell respiration 
B)  evaporation 
C)  erosion 
D)  combustion 
E)  transpiration 
A)  cell respiration 
B)  evaporation 
C)  erosion 
D)  combustion 
E)  transpiration

Question 19

In a food chain, primary consumers occupy the firs t trophic level. 
____________________

Accepted Answer

A) True 
 B)False

Question 20

Organisms that manufactures their own food are known as:

Accepted Answer

A)  secondary consumers 
B)  autotrophs 
C)  primary consumers 
D)  heterotrophs 
E)  herbivores 
A)  secondary consumers 
B)  autotrophs 
C)  primary consumers 
D)  heterotrophs 
E)  herbivores

Exam 55: Ecosystems and the Biosphere

The sun's energy is produced by:

The effect of DDT on birds is a result of which three characteristics of DDT?

Which trophic level would contain the lowest quantity of energy (kcal per m2)?

How are bacteria important to the genus Rhizobium ?

The organisms occupying the base of a pyramid of energy are autotrophs . ____________________

The enzyme nitrogenase is rather unique, as it specifically functions in the:

GPP, or Gross Primary Productivity:

In the carbon cycle, one of the ways in which carbon is returned to the atmosphere is by respiration . ____________________

Identify and describe three beneficial impacts of fire on certain ecosystems.

The clockwise gyre of surface ocean currents in the North Atlantic results in:

Bacteria are most essential in the cycling of:

During the cycling of phosphorus, phosphorus does not enter ____ in appreciable amounts.

Four of the five statements below apply to the phosphorus cycle. Which one does not apply?

The main steps of the nitrogen cycle are:

In considering a pyramid of biomass, explain why a large producer biomass is needed to support a population of carnivores.

About __________ of the total energy the sun releases strikes the atmosphere.

The seasons are determined primarily by Earth's tilt . ____________________

Which process plays the most important role in the phosphorous cycle?

In a food chain, primary consumers occupy the firs t trophic level. ____________________

Organisms that manufactures their own food are known as:

A View of Life

Atoms and Molecules the Chemical Basis of Life

The Chemistry of Life Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp Energy-Releasing Pathways

Photosynthesis Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure Growth and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function an Introduction

Protection Support and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology Population Ecology

Community Ecology

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

Filters

Which trophic level would contain the lowest quantity of energy (kcal per m²)?