Conservation Biology And Global Change - Campbell Biology | Biology+

Course

General Biology

Study Pack

Set 1: Introduction: Evolution and Themes of Biology

Set 2: The Chemical Context of Life

Set 3: Water and Life

Set 4: Carbon and the Molecular Diversity of Life

Set 5: The Structure and Function of Large Biological Molecules

Set 6: A Tour of the Cell

Set 7: Membrane Structure and Function

Set 8: An Introduction to Metabolism

Set 9: Cellular Respiration and Fermentation

Set 10: Photosynthesis

Set 11: Cell Communication

Set 12: The Cell Cycle

Set 13: Meiosis and Sexual Life Cycles

Set 14: Mendel and the Gene Idea

Set 15: The Chromosomal Basis of Inheritance

Set 16: The Molecular Basis of Inheritance

Set 17: From Gene to Protein

Set 18: Regulation of Gene Expression

Set 19: Viruses

Set 20: DNA Tools and Biotechnology

Set 21: Genomes and Their Evolution

Set 22: Descent with Modification: A Darwinian View of Life

Set 23: The Evolution of Populations

Set 24: The Origin of Species

Set 25: The History of Life on Earth

Set 26: Phylogeny and the Tree of Life

Set 27: Bacteria and Archaea

Set 28: Protists

Set 29: Plant Diversity I: How Plants Colonized Land

Set 30: Plant Diversity II: The Evolution of Seed Plants

Set 32: An Overview of Animal Diversity

Set 33: An Introduction to Invertebrates

Set 34: The Origin and Evolution of Vertebrates

Set 35: Plant Structure,Growth,and Development

Set 36: Resource Acquisition and Transport in Vascular Plants

Set 37: Soil and Plant Nutrition

Set 38: Angiosperm Reproduction and Biotechnology

Set 39: Plant Responses to Internal and External Signals

Set 40: Basic Principles of Animal Form and Function

Set 41: Animal Nutrition

Set 42: Circulation and Gas Exchange

Set 43: The Immune System

Set 44: Osmoregulation and Excretion

Set 45: Hormones and the Endocrine System

Set 46: Animal Reproduction

Set 47: Animal Development

Set 48: Neurons,Synapses,and Signalling

Set 49: Nervous Systems

Set 50: Sensory and Motor Mechanisms

Set 51: Animal Behaviour

Set 52: An Introduction to Ecology and the Biosphere

Set 53: Population Ecology

Set 54: Community Ecology

Set 55: Ecosystems and Restoration Ecology

Set 56: Conservation Biology and Global Change

Set 56 Conservation Biology And Global Change

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Set 56 Conservation Biology And Global Change

(Multiple Choice)

Free

Extinction is a natural phenomenon.It is estimated that 99% of all species that ever lived are now extinct.Why then do we say that we are now experiencing an extinction (loss of biodiversity)crisis?

A)Humans are ethically responsible for protecting endangered species.
B)Scientists have finally identified most of the species on Earth and are thus able to quantify the number of species becoming extinct.
C)The current rate of extinction is high and human activities threaten biodiversity at all levels.
D)Humans have greater medical needs than at any other time in history, and many potential medicinal compounds are being lost as plant species become extinct.
E)Most biodiversity hot spots have been destroyed by recent ecological disasters.

Answer

(Multiple Choice)

Free

According to the U.S.Endangered Species Act (ESA),the difference between an endangered species and a threatened one is that

A)an endangered species is closer to extinction.
B)a threatened species is closer to extinction.
C)threatened species are endangered species outside the U.S. borders.
D)endangered species are mainly tropical.
E)only endangered species are vertebrates.

Answer

(Multiple Choice)

Free

Which of the following statements regarding extinction is (are)correct?
I.Only a small percentage of species is immune from extinction.
II.Extinction occurs whether humans interfere or not.
III.Extinctions can even be caused indirectly by humans.

A)only I
B)only II
C)only III
D)only II and III

Answer