Question 1

When placed in water,an inorganic compound dissociates 99 percent,forming hydrogen ions and anions.This compound would be

Accepted Answer

A)  a strong base.
B)  a weak base.
C)  a strong acid.
D)  a weak acid.
E)  a salt.F) A) and E)
G) B) and D)

Question 2

An excess of hydrogen ions in the body fluids can have fatal results because this can

Accepted Answer

A)  break chemical bonds.
B)  change the shape of large complex molecules,rendering them nonfunctional.
C)  disrupt tissue functions.
D)  change body fluid pH.
E)  All of the answers are correct.F) A) and B)
G) B) and D)

Question 3

Sodium (Na) has an atomic number of 11. How many electrons are in the outer electron shell of a neutral sodium atom?

Accepted Answer

A)  1
B)  2
C)  3
D)  4
E)  8F) D) and E)
G) A) and E)

Question 4

Cholesterol,phospholipids,and glycolipids are examples of

Accepted Answer

A)  dietary fats.
B)  prostaglandins.
C)  structural lipids.
D)  lipid drugs.
E)  steroids.F) A) and B)
G) A) and E)

Question 5

Alaska Natives have a lower incidence of heart disease even though their diets are high in fat and cholesterol.This may be due to the large amount of ________ in their diets.

Accepted Answer

A)  vitamins
B)  triglycerides
C)  prostaglandins
D)  omega-3 fatty acids
E)  oleic acidF) A) and C)
G) None of the above

Question 6

Magnesium atoms have two electrons in the outermost shell.As a result,you would expect magnesium to form ions with a charge of

Accepted Answer

A)  +1.
B)  +2.
C)  -1.
D)  -2.
E)  either +2 or -2.F) B) and E)
G) D) and E)

Question 7

What role do buffer systems play in the human body?

Accepted Answer

Buffer systems help maintain p...

Question 8

An amino acid is to a protein as ________ is to a nucleic acid.

Accepted Answer

A)  a purine
B)  a nucleotide
C)  a protein
D)  a proton
E)  a neutronF) D) and E)
G) A) and D)

Question 9

Identify which of the following is both an anion and a compound:

Accepted Answer

A)  Na⁺
B)  Cl⁻
C)  K⁺
D)  HCO₃⁻
E)  NaClF) C) and D)
G) A) and E)

Question 10

When two monosaccharides undergo a dehydration synthesis,

Accepted Answer

A)  two new monosaccharides are formed.
B)  a disaccharide is formed.
C)  a polysaccharide is formed.
D)  a starch is formed.
E)  hydrolysis occurs.F) B) and E)
G) C) and D)

Question 11

In an ionic bond,the electron donor is the ________,whereas the electron acceptor is the ________.

Accepted Answer

A)  acid,base
B)  salt,ion
C)  anion,cation
D)  base,acid
E)  cation,anionF) A) and E)
G) A) and D)

Question 12

Molecules that do not readily interact with water are called ________.

Accepted Answer

The answer of Molecules that do not readily interact with...

Question 13

Elements that have atoms with full outer shells of electrons

Accepted Answer

A)  will form many compounds.
B)  will normally form anions.
C)  will normally form cations.
D)  frequently form hydrogen bonds.
E)  are inert gases.F) B) and E)
G) A) and D)

Question 14

A dust particle floating on a water surface illustrates

Accepted Answer

A)  surface tension.
B)  chemical tension.
C)  static electricity.
D)  heat capacity.
E)  hydrophilic attraction.F) C) and D)
G) A) and B)

Question 15

An example of an inorganic substance is

Accepted Answer

A)  fructose.
B)  water.
C)  glycerol.
D)  carbon dioxide.
E)  water and carbon dioxide.F) None of the above
G) B) and D)

Question 16

Carbohydrate molecules

Accepted Answer

A)  are the building blocks of cellular membranes.
B)  form the regulatory molecules known as enzymes.
C)  are the body's most readily available source of energy.
D)  are composed of C,H,O,and N atoms.
E)  contain the genetic information found in cells.F) A) and E)
G) B) and C)

Question 17

The chemical notation that indicates concentration is represented as

Accepted Answer

A)  () .
B)  .
C)  [ ].
D)  {}.
E)  ||.F) A) and D)
G) B) and D)

Question 18

The most important metabolic fuel molecule in the body is

Accepted Answer

A)  sucrose.
B)  caffeine.
C)  protein.
D)  vitamins.
E)  glucose.F) B) and D)
G) All of the above

Question 19

Electrons in an atom occupy an orderly series of electron shells or ________.

Accepted Answer

The answer of Electrons in an atom occupy an orderly...

Question 20

A solution containing equal numbers of hydrogen ions and hydroxide ions is

Accepted Answer

A)  acidic.
B)  basic.
C)  neutral.
D)  alkaline.
E)  in equilibrium.F) C) and D)
G) A) and B)

Exam 2: The Chemical Level of Organization

An excess of hydrogen ions in the body fluids can have fatal results because this can

Correct AnswerverifiedShow Answer

In an ionic bond,the electron donor is the ________,whereas the electron acceptor is the ________.

Correct AnswerverifiedShow Answer

A dust particle floating on a water surface illustrates

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Sodium (Na) has an atomic number of 11. How many electrons are in the outer electron shell of a neutral sodium atom?

Correct AnswerverifiedShow Answer

Carbohydrate molecules

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Molecules that do not readily interact with water are called ________.

Correct AnswerverifiedShow Answer

Magnesium atoms have two electrons in the outermost shell.As a result,you would expect magnesium to form ions with a charge of

Correct AnswerverifiedShow Answer

The chemical notation that indicates concentration is represented as

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Identify which of the following is both an anion and a compound:

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When placed in water,an inorganic compound dissociates 99 percent,forming hydrogen ions and anions.This compound would be

Correct AnswerverifiedShow Answer

Alaska Natives have a lower incidence of heart disease even though their diets are high in fat and cholesterol.This may be due to the large amount of ________ in their diets.

Correct AnswerverifiedShow Answer

When two monosaccharides undergo a dehydration synthesis,

Correct AnswerverifiedShow Answer

Electrons in an atom occupy an orderly series of electron shells or ________.

Correct AnswerverifiedShow Answer

The most important metabolic fuel molecule in the body is

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An amino acid is to a protein as ________ is to a nucleic acid.

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An example of an inorganic substance is

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What role do buffer systems play in the human body?

Correct AnswerverifiedBuffer systems help maintain p...View AnswerShow Answer

Cholesterol,phospholipids,and glycolipids are examples of

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A solution containing equal numbers of hydrogen ions and hydroxide ions is

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Elements that have atoms with full outer shells of electrons

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In an ionic bond,the electron donor is the ,whereas the electron acceptor is the .

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Buffer systems help maintain p...
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