Question 1

Carbon dioxide is an element.

Accepted Answer

A) True 
 B)False

Question 2

Solution A has a pH of 6 and solution B has a pH of 8. Therefore, ____.

Accepted Answer

A)  A has 10 times greater H+concentration than B. 
B)  B has 10 times greater H+concentration than A. 
C)  A has 100 times greater H+concentration than B. 
D)  B has 100 times greater H+concentration than A. 
E)  A has 1,000 times greater H+concentration than B. 
A)  A has 10 times greater H+concentration than B. 
B)  B has 10 times greater H+concentration than A. 
C)  A has 100 times greater H+concentration than B. 
D)  B has 100 times greater H+concentration than A. 
E)  A has 1,000 times greater H+concentration than B.

Question 3

A trace element is one found in specific organisms in ____ quantities and is ____ for normal biological functions.

Accepted Answer

A)  moderate; unnecessary 
B)  moderate; vital 
C)  small; unnecessary 
D)  large; unnecessary 
E)  small; vital 
A)  moderate; unnecessary 
B)  moderate; vital 
C)  small; unnecessary 
D)  large; unnecessary 
E)  small; vital

Question 4

Biological membranes are held together mainly by ____.

Accepted Answer

A)  hydrogen bonds between lipid molecules 
B)  hydration layers over lipid molecules 
C)  exclusion of the nonpolar regions of lipids by water 
D)  hydrogen bonds between water molecules 
E)  surface tension at the interface between layers of water molecules 
A)  hydrogen bonds between lipid molecules 
B)  hydration layers over lipid molecules 
C)  exclusion of the nonpolar regions of lipids by water 
D)  hydrogen bonds between water molecules 
E)  surface tension at the interface between layers of water molecules

Question 5

Avogadro's number represents the ____.

Accepted Answer

A)  number of grams in a mole of substance 
B)  number of moles in a gram of substance 
C)  number of atoms in one gram of substance 
D)  atomic weight of an atom divided by the weight of an atom of that element 
E)  weight of an atom of an element divided by the atomic weight of that element 
A)  number of grams in a mole of substance 
B)  number of moles in a gram of substance 
C)  number of atoms in one gram of substance 
D)  atomic weight of an atom divided by the weight of an atom of that element 
E)  weight of an atom of an element divided by the atomic weight of that element

Question 6

When added to water at neutral pH (7.0), an acid will ____.

Accepted Answer

A)  act as a proton donor, raising the pH of the solution 
B)  act as a proton acceptor, raising the pH of the solution 
C)  act as a proton donor, lowering the pH of the solution 
D)  act as a proton acceptor, lowering the pH of the solution 
E)  do nothing since the aqueous solution is neutral 
A)  act as a proton donor, raising the pH of the solution 
B)  act as a proton acceptor, raising the pH of the solution 
C)  act as a proton donor, lowering the pH of the solution 
D)  act as a proton acceptor, lowering the pH of the solution 
E)  do nothing since the aqueous solution is neutral

Question 7

Isotopes of the same element differ from each other in the number of ____.

Accepted Answer

A)  electrons and protons 
B)  neutrons only 
C)  protons and neutrons 
D)  electrons only 
E)  protons, neutrons, and electrons 
A)  electrons and protons 
B)  neutrons only 
C)  protons and neutrons 
D)  electrons only 
E)  protons, neutrons, and electrons

Exam 2: Life, Chemistry, and Water

Carbon dioxide is an element.

Solution A has a pH of 6 and solution B has a pH of 8. Therefore, ____.

A trace element is one found in specific organisms in ____ quantities and is ____ for normal biological functions.

Biological membranes are held together mainly by ____.

Avogadro's number represents the ____.

When added to water at neutral pH (7.0), an acid will ____.

Isotopes of the same element differ from each other in the number of ____.

Introduction to Biological Concepts and Research

Biological Molecules: the Carbon Compounds of Life

Cells

Membranes and Transport

Energy, Enzymes, and Biological Reactions

Cellular Respiration: Harvesting Chemical Energy

Photosynthesis

Cell Communication

Cell Division and Mitosis

Meiosis: the Cellular Basis of Sexual Reproduction

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

Dna Structure, Replication, and Organization

Gene Expression: From Dna to Protein

Regulation of Gene Expression

Bacterial and Viral Genetics

Dna Technology: Making and Using Genetically Altered Organisms, and Other Applications

Genomes and Proteomes

The Development of Evolutionary Thought

Microevolution: Genetic Changes Within Populations

Speciation

Paleobiology and Macroevolution

Systematic Biology: Phylogeny and Classification

The Origin of Life

Prokaryotes and Viruses

Protists

Seedless Plants

Seed Plants

Fungi

Animal Phylogeny, Acoelomates, and Protostomes

Deuterostomes: Vertebrates and Their Closest Relatives

The Plant Body

Transport in Plants

Plant Nutrition

Reproduction and Development in Flowering Plants

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Information Flow and the Neuron

Nervous Systems

Sensory Systems

The Endocrine System

Muscles, Bones, and Body Movements

The Circulatory System

Defenses Against Disease

Gas Exchange: the Respiratory System

Digestive Systems and Animal Nutrition

Regulating the Internal Environment: Osmoregulation, Excretion, and Thermoregulation

Animal Reproduction

Animal Development

Ecology and the Biosphere

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Biodiversity and Conservation Biology

Animal Behavior

Filters

A trace element is one found in specific organisms in quantities and is for normal biological functions.