Question 1

How does the energy of an electron relate with the distance from the nucleus?

Accepted Answer

A)  The closer an electron is from the nucleus, the greater its energy. 
B)  The farther an electron is from the nucleus, the greater its energy. 
C)  The farther a proton is from the nucleus, the greater the electron's energy. 
D)  The closer a proton is from the nucleus, the greater the electron's energy. 
E)  The closer a neutron is from the nucleus, the greater the electron's energy. 
A)  The closer an electron is from the nucleus, the greater its energy. 
B)  The farther an electron is from the nucleus, the greater its energy. 
C)  The farther a proton is from the nucleus, the greater the electron's energy. 
D)  The closer a proton is from the nucleus, the greater the electron's energy. 
E)  The closer a neutron is from the nucleus, the greater the electron's energy. B

Question 2

The ____ of an atom have no charge.

Accepted Answer

A)  electrons 
B)  protons 
C)  neutrons 
D)  ions 
E)  nuclei 
A)  electrons 
B)  protons 
C)  neutrons 
D)  ions 
E)  nuclei C

Question 3

Tracers are elements that ____.

Accepted Answer

A)  are used in minute amounts in plants 
B)  can be monitored during biochemical reactions 
C)  must be inert 
D)  have an unbalanced electrical charge 
E)  must have a stable nucleus 
A)  are used in minute amounts in plants 
B)  can be monitored during biochemical reactions 
C)  must be inert 
D)  have an unbalanced electrical charge 
E)  must have a stable nucleus B

Question 4

Figure 2.5A
  
-Based on its outer shell,the atom in the accompanying figure would be characterized as ____.

Accepted Answer

A)  very stable 
B)  somewhat stable 
C)  somewhat unstable 
D)  very unstable 
E)  radioactive 
A)  very stable 
B)  somewhat stable 
C)  somewhat unstable 
D)  very unstable 
E)  radioactive

Question 5

Classification. The various energy levels in an atom of magnesium (S1U1P124S1S1P0Mg) have different numbers of electrons. Use the numbers below to answer the following questions.
-The number of electrons in the second energy level

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 6 
E) 8 
A) 1 
B) 2 
C) 3 
D) 6 
E) 8

Question 6

Figure 2.5B
  
-Which atom is depicted in the accompanying figure?

Accepted Answer

A)  Hydrogen 
B)  Helium 
C)  Carbon 
D)  Nitrogen 
E)  Oxygen 
A)  Hydrogen 
B)  Helium 
C)  Carbon 
D)  Nitrogen 
E)  Oxygen

Question 7

Atoms with a(n)____ are more likely to form chemical bonds.

Accepted Answer

A)  filled outer orbital shell 
B)  unfilled outer orbital shell 
C)  filled inner orbital shell 
D)  unfilled inner orbital shell 
E)  large number of orbital shells 
A)  filled outer orbital shell 
B)  unfilled outer orbital shell 
C)  filled inner orbital shell 
D)  unfilled inner orbital shell 
E)  large number of orbital shells

Question 8

The bond in table salt (NaCl)is ____.

Accepted Answer

A)  polar 
B)  ionic 
C)  covalent 
D)  double 
E)  nonpolar 
A)  polar 
B)  ionic 
C)  covalent 
D)  double 
E)  nonpolar

Question 9

Classification. The following are types of chemical bonds. Answer the questions below by matching the descriptions with the most appropriate bond type.
-The bond that breaks when salts dissolve in water

Accepted Answer

A) hydrogen 
B) ionic 
C) covalent 
D) polar covalent 
E) double bond 
A) hydrogen 
B) ionic 
C) covalent 
D) polar covalent 
E) double bond

Question 10

Isotopes of atoms ____.

Accepted Answer

A)  have the same number of neutrons but a different number of protons 
B)  behave the same chemically and biologically from other isotopes 
C)  are the same physically and biologically but differ from other isotopes chemically 
D)  have the same number of protons but a different number of electrons 
E)  are produced when atoms lose electrons 
A)  have the same number of neutrons but a different number of protons 
B)  behave the same chemically and biologically from other isotopes 
C)  are the same physically and biologically but differ from other isotopes chemically 
D)  have the same number of protons but a different number of electrons 
E)  are produced when atoms lose electrons

Question 11

An atom can get rid of vacancies by participating in a ___________.

Accepted Answer

A)  cell bond 
B)  physical bond 
C)  chemical bond 
D)  magnetic bond 
E)  electric bond 
A)  cell bond 
B)  physical bond 
C)  chemical bond 
D)  magnetic bond 
E)  electric bond

Question 12

The ability of a solution to resist changes in pH depends on its ____________________ capacity.

Accepted Answer

The answer of The ability of a solution to resist...

Question 13

Classification. The following are important terms relating to acids and bases. Answer the questions below by matching the descriptions with the most appropriate word.
-Toothpaste

Accepted Answer

A) pH 
B) acid 
C) base 
D) Buffer 
A) pH 
B) acid 
C) base 
D) Buffer

Question 14

Classification. The following are important terms relating to acids and bases. Answer the questions below by matching the descriptions with the most appropriate word.
-Measure of H+ in a fluid

Accepted Answer

A) pH 
B) acid 
C) base 
D) Buffer 
A) pH 
B) acid 
C) base 
D) Buffer

Question 15

Figure 2.11B
  
-The dashed line in the accompanying figure represents a(n)____.

Accepted Answer

A)  covalent bond 
B)  ionic bond 
C)  hydrogen bond 
D)  polar covalent bond 
E)  hydrophobic interaction 
A)  covalent bond 
B)  ionic bond 
C)  hydrogen bond 
D)  polar covalent bond 
E)  hydrophobic interaction

Question 16

Tracers allow scientists to track a molecule through a biochemical process by replacing an atom in that molecule with its _________.

Accepted Answer

The answer of Tracers allow scientists to track a molecule...

Question 17

In the chemical shorthand,14C,the 14 represents the number of ____.

Accepted Answer

A)  excess neutrons 
B)  protons plus neutrons 
C)  electrons 
D)  protons plus electrons 
E)  radioactive particles 
A)  excess neutrons 
B)  protons plus neutrons 
C)  electrons 
D)  protons plus electrons 
E)  radioactive particles

Question 18

The predictable rate of ____________________ allows scientists to estimate the age of a rock or fossil by examining its isotope content.

Accepted Answer

Decay
radi

Question 19

A hydrogen bond is an attraction between a(n)____ hydrogen atom and another atom taking part in ____.

Accepted Answer

A)  covalently bonded; the same polar covalent bond 
B)  ionically bonded; the same polar covalent bond 
C)  covalently bonded; a separate polar covalent bond 
D)  ionically bonded; a separate nonpolar covalent bond 
E)  nonpolar covalently bonded; a separate nonpolar covalent bond 
A)  covalently bonded; the same polar covalent bond 
B)  ionically bonded; the same polar covalent bond 
C)  covalently bonded; a separate polar covalent bond 
D)  ionically bonded; a separate nonpolar covalent bond 
E)  nonpolar covalently bonded; a separate nonpolar covalent bond

Question 20

Classification. The following are important terms relating to acids and bases. Answer the questions below by matching the descriptions with the most appropriate word.
-Substance that releases,but does not accept,H+

Accepted Answer

A) pH 
B) acid 
C) base 
D) Buffer 
A) pH 
B) acid 
C) base 
D) Buffer

Exam 2: Life's Chemical Bases

How does the energy of an electron relate with the distance from the nucleus?

The ____ of an atom have no charge.

Tracers are elements that ____.

Figure 2.5A -Based on its outer shell,the atom in the accompanying figure would be characterized as ____.

Classification. The various energy levels in an atom of magnesium (24Mg) have different numbers of electrons. Use the numbers below to answer the following questions. -The number of electrons in the second energy level

Figure 2.5B -Which atom is depicted in the accompanying figure?

Atoms with a(n)____ are more likely to form chemical bonds.

The bond in table salt (NaCl)is ____.

Classification. The following are types of chemical bonds. Answer the questions below by matching the descriptions with the most appropriate bond type. -The bond that breaks when salts dissolve in water

Isotopes of atoms ____.

An atom can get rid of vacancies by participating in a ___________.

The ability of a solution to resist changes in pH depends on its ____________________ capacity.

Classification. The following are important terms relating to acids and bases. Answer the questions below by matching the descriptions with the most appropriate word. -Toothpaste

Classification. The following are important terms relating to acids and bases. Answer the questions below by matching the descriptions with the most appropriate word. -Measure of H+ in a fluid

Figure 2.11B -The dashed line in the accompanying figure represents a(n)____.

Tracers allow scientists to track a molecule through a biochemical process by replacing an atom in that molecule with its _________.

In the chemical shorthand,14C,the 14 represents the number of ____.

The predictable rate of ____________________ allows scientists to estimate the age of a rock or fossil by examining its isotope content.

A hydrogen bond is an attraction between a(n)____ hydrogen atom and another atom taking part in ____.

Classification. The following are important terms relating to acids and bases. Answer the questions below by matching the descriptions with the most appropriate word. -Substance that releases,but does not accept,H+

Invitation to Biology

Molecules of Life

Cell Structure

Ground Rules of Metabolism

Where it Starts—Photosynthesis

How Cells Release Chemical Energy

DNA Structure and Function

From DNA to Protein

Control of Gene Expression

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Processes of Evolution

Organizing Information about Species

Life's Origin and Early Evolution

Viruses, Bacteria, and Archaea

Protists: The Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution: The Invertebrates

Animal Evolution: The Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive System

Animal Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters

Classification. The various energy levels in an atom of magnesium (²⁴Mg) have different numbers of electrons. Use the numbers below to answer the following questions. -The number of electrons in the second energy level

Classification. The following are important terms relating to acids and bases. Answer the questions below by matching the descriptions with the most appropriate word. -Measure of H⁺ in a fluid

A hydrogen bond is an attraction between a(n) hydrogen atom and another atom taking part in .

Classification. The following are important terms relating to acids and bases. Answer the questions below by matching the descriptions with the most appropriate word. -Substance that releases,but does not accept,H⁺