Question 1

Oxygen has an atomic number of 8.This means that oxygen has 8

Accepted Answer

A)  electrons in its outer most shell. 
B)  neutrons in its nucleus. 
C)  protons and 8 neutrons in its nucleus. 
D)  protons in its nucleus. 
E)  neutrons in its outer shell. 
A)  electrons in its outer most shell. 
B)  neutrons in its nucleus. 
C)  protons and 8 neutrons in its nucleus. 
D)  protons in its nucleus. 
E)  neutrons in its outer shell.

Question 2

A(n)____ is a type of chemical bond in which a strong mutual attraction forms between ions of opposite charge.

Accepted Answer

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

Question 3

For which of the following pHs,is the hydroxide ion concentration greater than the hydrogen ion concentration?

Accepted Answer

A)  1 
B)  3 
C)  5 
D)  7 
E)  9 
A)  1 
B)  3 
C)  5 
D)  7 
E)  9

Question 4

Large polymers are formed from smaller sub-units by what type of reaction?

Accepted Answer

A)  oxidation 
B)  reduction 
C)  condensation 
D)  hydrolysis 
E)  decarboxylation 
A)  oxidation 
B)  reduction 
C)  condensation 
D)  hydrolysis 
E)  decarboxylation

Question 5

The neutral subatomic particle is

Accepted Answer

A)  the neutron. 
B)  the proton. 
C)  the electron. 
D)  both the electron and the proton. 
E)  both the neutron and the electron. 
A)  the neutron. 
B)  the proton. 
C)  the electron. 
D)  both the electron and the proton. 
E)  both the neutron and the electron.

Question 6

Classification.The following are basic building blocks of macromolecules.Answer the questions with reference to those building blocks.
-the basic unit of glycogen

Accepted Answer

A) amino acids 
B) glucose 
C) glycerol 
D) fatty acids 
E) nucleotide
F)amino acids and glucose
G)amino acids and glycerol
H)glucose and glycerol
I)glucose and fatty acids
J)glycerol and fatty acids 
A) amino acids 
B) glucose 
C) glycerol 
D) fatty acids 
E) nucleotide
F)amino acids and glucose
G)amino acids and glycerol
H)glucose and glycerol
I)glucose and fatty acids
J)glycerol and fatty acids

Question 7

Match the following letters to the number with which they best correspond.
-isotope with an unstable nucleus.

Accepted Answer

A) Mass number 
B) Atomic number 
C) Radioisotope 
D) Isotopes 
E) Ions 
A) Mass number 
B) Atomic number 
C) Radioisotope 
D) Isotopes 
E) Ions

Question 8

Denaturation of proteins will result in all EXCEPT one of the following.Which one is it?

Accepted Answer

A)  breakage of hydrogen bonds 
B)  loss of three dimensional structure 
C)  removal of R groups from amino acids 
D)  alteration of enzyme activity 
E)  endangerment of cell's life 
A)  breakage of hydrogen bonds 
B)  loss of three dimensional structure 
C)  removal of R groups from amino acids 
D)  alteration of enzyme activity 
E)  endangerment of cell's life

Question 9

The average American consumes about ____ pounds of fat per year.

Accepted Answer

A)  100 
B)  80 
C)  70 
D)  50 
E)  20 
A)  100 
B)  80 
C)  70 
D)  50 
E)  20

Question 10

Which of the following CANNOT be used to describe some aspect of polysaccharides?

Accepted Answer

A)  energy storage 
B)  glucose subunits 
C)  straight or branched chain 
D)  insoluble in water 
E)  complex 
A)  energy storage 
B)  glucose subunits 
C)  straight or branched chain 
D)  insoluble in water 
E)  complex

Question 11

Which of the following is true of water molecules when water becomes ice?

Accepted Answer

A)  the water molecules jiggle more 
B)  their structure becomes less rigid 
C)  the water molecules pack less densely 
D)  hydrogen bonds between water molecules readily break 
E)  evaporation of water molecules happens more readily 
A)  the water molecules jiggle more 
B)  their structure becomes less rigid 
C)  the water molecules pack less densely 
D)  hydrogen bonds between water molecules readily break 
E)  evaporation of water molecules happens more readily

Question 12

Fats are major components of the cell's

Accepted Answer

A)  membranes. 
B)  cytoplasm. 
C)  proteins. 
D)  ribosomes. 
E)  mitochondria. 
A)  membranes. 
B)  cytoplasm. 
C)  proteins. 
D)  ribosomes. 
E)  mitochondria.

Question 13

A liquid that can dissolve other substances is called a

Accepted Answer

A)  compound. 
B)  mixture. 
C)  solvent. 
D)  solute. 
E)  solution. 
A)  compound. 
B)  mixture. 
C)  solvent. 
D)  solute. 
E)  solution.

Question 14

Eating as little as ___ grams of trans fats can increase a person's risk for a variety of diseases.

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
E)  five 
A)  one 
B)  two 
C)  three 
D)  four 
E)  five

Question 15

Chemical bonds are based on attractions between the ____ of two atoms.

Accepted Answer

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

Question 16

Classification.The following are basic building blocks of macromolecules.Answer the questions with reference to those building blocks.
-the basic unit of cellulose

Accepted Answer

A) amino acids 
B) glucose 
C) glycerol 
D) fatty acids 
E) nucleotide
F)amino acids and glucose
G)amino acids and glycerol
H)glucose and glycerol
I)glucose and fatty acids
J)glycerol and fatty acids 
A) amino acids 
B) glucose 
C) glycerol 
D) fatty acids 
E) nucleotide
F)amino acids and glucose
G)amino acids and glycerol
H)glucose and glycerol
I)glucose and fatty acids
J)glycerol and fatty acids

Question 17

Of all the biological molecules,which ones are the most diverse in both structure and function?

Accepted Answer

A)  proteins 
B)  carbohydrates 
C)  lipids 
D)  nucleic acids 
E)  steroids 
A)  proteins 
B)  carbohydrates 
C)  lipids 
D)  nucleic acids 
E)  steroids

Question 18

The following statements related to electrons are correct,EXCEPT one.Select the EXCEPTION.

Accepted Answer

A)  Electrons closest to the nucleus are at the lowest energy level. 
B)  Electrons are negatively charged. 
C)  Electrons cannot move from the place in their orbital. 
D)  The innermost orbital holds two electrons. 
E)  At the second energy level, there are spaces for a maximum of eight electrons. 
A)  Electrons closest to the nucleus are at the lowest energy level. 
B)  Electrons are negatively charged. 
C)  Electrons cannot move from the place in their orbital. 
D)  The innermost orbital holds two electrons. 
E)  At the second energy level, there are spaces for a maximum of eight electrons.

Question 19

Which of the following would NOT strongly associated with the word "acid"?

Accepted Answer

A)  excess hydrogen ions 
B)  magnesium hydroxide 
C)  contents of the stomach 
D)  HCl 
E)  pH less than 7 
A)  excess hydrogen ions 
B)  magnesium hydroxide 
C)  contents of the stomach 
D)  HCl 
E)  pH less than 7

Question 20

Classification.The following are types of chemical bonds.Answer the questions with reference to those chemical bonds.
-the bond that is easiest to break

Accepted Answer

A) hydrogen 
B) ionic 
C) covalent 
A) hydrogen 
B) ionic 
C) covalent

Exam 2: Molecules of Life

Oxygen has an atomic number of 8.This means that oxygen has 8

A(n)____ is a type of chemical bond in which a strong mutual attraction forms between ions of opposite charge.

For which of the following pHs,is the hydroxide ion concentration greater than the hydrogen ion concentration?

Large polymers are formed from smaller sub-units by what type of reaction?

The neutral subatomic particle is

Classification.The following are basic building blocks of macromolecules.Answer the questions with reference to those building blocks. -the basic unit of glycogen

Match the following letters to the number with which they best correspond. -isotope with an unstable nucleus.

Denaturation of proteins will result in all EXCEPT one of the following.Which one is it?

The average American consumes about ____ pounds of fat per year.

Which of the following CANNOT be used to describe some aspect of polysaccharides?

Which of the following is true of water molecules when water becomes ice?

Fats are major components of the cell's

A liquid that can dissolve other substances is called a

Eating as little as ___ grams of trans fats can increase a person's risk for a variety of diseases.

Chemical bonds are based on attractions between the ____ of two atoms.

Classification.The following are basic building blocks of macromolecules.Answer the questions with reference to those building blocks. -the basic unit of cellulose

Of all the biological molecules,which ones are the most diverse in both structure and function?

The following statements related to electrons are correct,EXCEPT one.Select the EXCEPTION.

Which of the following would NOT strongly associated with the word "acid"?

Classification.The following are types of chemical bonds.Answer the questions with reference to those chemical bonds. -the bond that is easiest to break

Invitation to Biology

Cell Structure

Energy and Metabolism

Capturing and Releasing Energy

DNA Structure and Function

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Early Life Forms and the Viruses

Plants and Fungi

Animal Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Reproduction and Development

Plant Form and Function

Plant Reproduction and Development

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