Question 1

This type of lipid is the body's primary long-term energy storage molecule.

Accepted Answer

A)  steroid
B)  phospholipid
C)  cholesterol
D)  triglyceride
E)  lipoproteinF) A) and C)
G) B) and D)

Question 2

In the body fluid compartments found in of the human body,the solvent is

Accepted Answer

A)  glucose.
B)  lipids.
C)  carbon dioxide.
D)  water.
E)  electrolyte.F) D) and E)
G) None of the above

Question 3

Which of the following is a proton donor?

Accepted Answer

A)  acid
B)  base
C)  salt
D)  organic compound
E)  colloidF) All of the above
G) D) and E)

Question 4

A chemical compound that helps control the pH of a solution by adding or removing hydrogen ions is a(n)

Accepted Answer

A)  electrolyte.
B)  salt.
C)  cation.
D)  colloid.
E)  buffer.F) A) and B)
G) C) and D)

Question 5

What are the four major elements found in the chemicals that comprise the human body?

Accepted Answer

A)  nitrogen,oxygen,calcium,sodium
B)  hydrogen,carbon,phosphorus,calcium
C)  carbon,hydrogen,oxygen and nitrogen
D)  oxygen,nitrogen,potassium,calcium
E)  potassium,phosphorus,sodium,hydrogenF) A) and C)
G) C) and D)

Question 6

The nucleus of unstable _____ of an element will decay leading to emission of radiation.

Accepted Answer

A)  compounds
B)  cations
C)  anions
D)  isotopes
E)  moleculesF) A) and B)
G) A) and E) D

Question 7

In the diagram,what pH value represents an acidic Solution?

Accepted Answer

A)  12
B)  10
C)  8
D)  6
E)  None of these choices.F) A) and C)
G) A) and B)

Question 8

Which of the labeled structures are found in DNA but not RNA?
1 A
2 B
3 C
4 E

Accepted Answer

A)  1 only
B)  2 only
C)  3 only
D)  4 only
E)  1 and 4F) All of the above
G) C) and E) E

Question 9

Describe what happens to a protein's structure and function when it is denatured.

Accepted Answer

During denaturation,the folded...

Question 10

Which of the following is a common function of RNA?

Accepted Answer

A)  produces electrical impulses
B)  storage of energy transfers energy for cellular metabolism
C)  transfer information carries genetic code needed for protein synthesis
D)  long-term storage of information for carries inherited genetic code that controls protein synthesis
E)  transports of fluidsF) B) and E)
G) A) and B)

Question 11

The chemical bonds formed between the oxygen and hydrogen atoms making up a water molecule are called

Accepted Answer

A)  nonpolar covalent bonds.
B)  polar covalent bonds.
C)  hydrogen bonds.
D)  ionic bonds.
E)  atomic bonds.F) A) and B)
G) B) and E)

Question 12

This type of lipid is used by the body for insulation.

Accepted Answer

A)  phospholipids
B)  triglycerides
C)  bile salts
D)  sex hormones
E)  carotenesF) A) and B)
G) D) and E)

Question 13

Describe the functions of water in the body.

Accepted Answer

Water is a Solvent that allows transportation of Solutes.Water acts in hydrolysis reactions to split reactants.Water can transport heat in the body and can be used to release heat from the body as occurs in sweating.Water is used as a lubricant,particularly in serous fluids like those surrounding the lungs and on mucosal membranes like those lining the gastrointestinal tract.

Question 14

Choose the appropriate atomic number associated with the element.
Carbon's atomic mass (P = 6,N = 6)is [dropdown 1a].Carbon has [dropdown 2b] valence electrons.Carbon can form up to [dropdown 3c] covalent bonds.Carbon 14 is a radioactive isotope and contains [dropdown 4d] neutrons.
Dropdown choices
2
4
6
7
8
12
14

Accepted Answer

The answer of Choose the appropriate atomic number associated with...

Question 15

AB + CD → AD + BC is a general example of a(n) _____ reaction.

Accepted Answer

A)  decomposition
B)  synthesis
C)  exchange
D)  reversible
E)  catalyzedF) C) and D)
G) A) and B)

Question 16

A triple covalent bond is formed between atoms sharing _____ valence electrons.

Accepted Answer

A)  one
B)  two
C)  three
D)  six
E)  eightF) A) and E)
G) A) and D)

Question 17

Which of the following is NOT true about phospholipids?

Accepted Answer

A)  They contain a glycerol backbone.
B)  The head group is polar.
C)  The molecule is an important part of cell membranes.
D)  The tail groups are nonpolar.
E)  They are a major form of energy storage.F) C) and E)
G) A) and B)

Question 18

This refers to a weighted average of the atomic weights of all naturally occurring isotopes of an element.

Accepted Answer

A)  mass number
B)  atomic number
C)  atomic mass
D)  ionic mass
E)  covalent massF) A) and E)
G) A) and B)

Question 19

A solution with a pH value less than 7 is

Accepted Answer

A)  basic.
B)  neutral.
C)  acidic.
D)  alkaline.
E)  concentrated.F) B) and D)
G) None of the above

Question 20

The energy stored in the bonds of the molecules in the foods that humans eat is
1) a form of kinetic energy.
2) a form of potential energy.
3) referred to as chemical energy.

Accepted Answer

A)  1 only
B)  2 only
C)  3 only
D)  2 and 3
E)  All of these choicesF) A) and E)
G) A) and B)

Exam 2: The Chemical Level of Organization

This type of lipid is the body's primary long-term energy storage molecule.

Correct Answer
verified

In the body fluid compartments found in of the human body,the solvent is

Correct Answer
verified

Which of the following is a proton donor?

Correct Answer
verified

A chemical compound that helps control the pH of a solution by adding or removing hydrogen ions is a(n)

Correct Answer
verified

What are the four major elements found in the chemicals that comprise the human body?

Correct Answer
verified

The nucleus of unstable _____ of an element will decay leading to emission of radiation.

Correct Answer
verified
D

In the diagram,what pH value represents an acidic Solution?

Correct Answer
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Which of the labeled structures are found in DNA but not RNA? 1 A 2 B 3 C 4 E

Correct Answer
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E

Describe what happens to a protein's structure and function when it is denatured.

Correct Answer
verified
During denaturation,the folded...
View Answer

Which of the following is a common function of RNA?

Correct Answer
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The chemical bonds formed between the oxygen and hydrogen atoms making up a water molecule are called

Correct Answer
verified

This type of lipid is used by the body for insulation.

Correct Answer
verified

Describe the functions of water in the body.

Correct Answer
verified

AB + CD → AD + BC is a general example of a(n) _____ reaction.

Correct Answer
verified

A triple covalent bond is formed between atoms sharing _____ valence electrons.

Correct Answer
verified

Which of the following is NOT true about phospholipids?

Correct Answer
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This refers to a weighted average of the atomic weights of all naturally occurring isotopes of an element.

Correct Answer
verified

A solution with a pH value less than 7 is

Correct Answer
verified

The energy stored in the bonds of the molecules in the foods that humans eat is 1) a form of kinetic energy. 2) a form of potential energy. 3) referred to as chemical energy.

Correct Answer
verified

Exam 2: The Chemical Level of Organization

This type of lipid is the body's primary long-term energy storage molecule.

Correct AnswerverifiedShow Answer

In the body fluid compartments found in of the human body,the solvent is

Correct AnswerverifiedShow Answer

Which of the following is a proton donor?

Correct AnswerverifiedShow Answer

A chemical compound that helps control the pH of a solution by adding or removing hydrogen ions is a(n)

Correct AnswerverifiedShow Answer

What are the four major elements found in the chemicals that comprise the human body?

Correct AnswerverifiedShow Answer

The nucleus of unstable _____ of an element will decay leading to emission of radiation.

Correct AnswerverifiedD

In the diagram,what pH value represents an acidic Solution?

Correct AnswerverifiedShow Answer

Which of the labeled structures are found in DNA but not RNA? 1 A 2 B 3 C 4 E

Correct AnswerverifiedE

Describe what happens to a protein's structure and function when it is denatured.

Correct AnswerverifiedDuring denaturation,the folded...View AnswerShow Answer

Which of the following is a common function of RNA?

Correct AnswerverifiedShow Answer

The chemical bonds formed between the oxygen and hydrogen atoms making up a water molecule are called

Correct AnswerverifiedShow Answer

This type of lipid is used by the body for insulation.

Correct AnswerverifiedShow Answer

Describe the functions of water in the body.

Correct AnswerverifiedShow Answer

AB + CD → AD + BC is a general example of a(n) _____ reaction.

Correct AnswerverifiedShow Answer

A triple covalent bond is formed between atoms sharing _____ valence electrons.

Correct AnswerverifiedShow Answer

Which of the following is NOT true about phospholipids?

Correct AnswerverifiedShow Answer

This refers to a weighted average of the atomic weights of all naturally occurring isotopes of an element.

Correct AnswerverifiedShow Answer

A solution with a pH value less than 7 is

Correct AnswerverifiedShow Answer

The energy stored in the bonds of the molecules in the foods that humans eat is 1) a form of kinetic energy. 2) a form of potential energy. 3) referred to as chemical energy.

Correct AnswerverifiedShow Answer

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D

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E

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During denaturation,the folded...
View Answer

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