The Chemical Context Of Life - 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 2 The Chemical Context Of Life

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Set 2 The Chemical Context Of Life

(Multiple Choice)

Free

An atom has 6 electrons in its outer shell.How many unpaired electrons does it have?

A)0
B)2
C)4
D)6
E)2 or 4

Answer

(Multiple Choice)

Free

Electrons exist only at fixed levels of potential energy.However,if an atom absorbs sufficient energy,a possible result is that

A)an electron may move to an electron shell farther away from the nucleus.
B)an electron may move to an electron shell closer to the nucleus.
C)the atom may become a radioactive isotope.
D)the atom would become a positively charged ion, or cation, and become a radioactive isotope.
E)the atom would become a negatively charged ion, or anion.

Answer

(Multiple Choice)

Free

Why is each element unique and different from other elements in chemical properties?

A)Each element has a unique atomic mass.
B)Each element has a unique atomic weight.
C)Each element has a unique number of protons in its nucleus.
D)Each element has a unique number of neutrons in its nucleus.
E)Each element has different radioactive properties.

Answer