Question 1

Which of the following equations depicts an exchange reaction?

Accepted Answer

A)  AB  →\rarr→  A + B
B)  A + B  →\rarr→  AB
C)  AB + CD  →\rarr→  AC + BD
D)  AB  →\rarr→  A- + B+
E)  A + B  →\rarr→  AB  →\rarr→  C + D F) B) and E)
G) A) and D)

Question 2

The breakdown of glucose to yield carbon dioxide,oxygen,and ATP can be described as __________.

Accepted Answer

A)  anabolic and endergonic
B)  catabolic and exergonic
C)  anabolic and exergonic
D)  catabolic and endergonic
E)  anabolic and exothermicF) C) and D)
G) A) and C)

Question 3

All amino acids have both a carboxyl group and an amino group attached to a central carbon.

Accepted Answer

A) True 
 B)False

Question 4

__________ are major components of cell membranes,and are said to be __________.

Accepted Answer

A)  Triglycerides; hydrophobic
B)  Steroids; hydrophilic
C)  Bile acids; fat-soluble
D)  Eicosanoids; water-soluble
E)  Phospholipids; amphiphilicF) A) and B)
G) A) and D)

Question 5

Proteoglycans are composed of __________.

Accepted Answer

A)  carbohydrates and fats
B)  nucleic acids and fats
C)  carbohydrates and proteins
D)  proteins and fats
E)  nucleic acids and proteinsF) B) and C)
G) A) and E)

Question 6

An atom with 12 electrons,13 neutrons,and 11 protons is a(n) __________.

Accepted Answer

A)  anion
B)  cation
C)  free radical
D)  isotopeE) A) and D)
F) C) and D)

Question 7

A chemical reaction that removes electrons from an atom is called a(n) __________ reaction.

Accepted Answer

A)  reduction
B)  condensation
C)  hydrolysis
D)  anabolic
E)  oxidationF) All of the above
G) None of the above

Question 8

In an exchange reaction,covalent bonds are broken and new covalent bonds are formed.

Accepted Answer

A) True 
 B)False

Question 9

Sodium has an atomic number of 11 and an atomic mass of 23.Sodium has __________.

Accepted Answer

A)  12 neutrons and 11 protons
B)  12 protons and 11 neutrons
C)  12 electrons and 11 neutrons
D)  12 protons and 11 electrons
E)  12 electrons and 11 protonsF) A) and E)
G) None of the above

Question 10

Potential energy stored in bonds is released as __________ energy.

Accepted Answer

A)  electromagnetic
B)  electrical
C)  chemical
D)  heat
E)  kineticF) C) and D)
G) A) and C)

Question 11

When jumping into water you notice resistance.This resistance is caused by water's __________.

Accepted Answer

A)  adhesiveness
B)  cohesiveness
C)  hydrophobic tension
D)  hydrophilic tension
E)  osmotic equilibriumF) B) and C)
G) A) and B)

Question 12

Minerals are organic elements extracted from the soil by plants.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following is not a nucleotide?

Accepted Answer

A)  RNA
B)  GTP
C)  ATP
D)  cAMPE) A) and B)
F) B) and D)

Question 14

__________ account for 98.5% of the body's weight.

Accepted Answer

A)  Carbon, oxygen, hydrogen, sodium, potassium, and chlorine
B)  Carbon, oxygen, iron, sodium, potassium, and chlorine
C)  Carbon, nitrogen, hydrogen, sodium, potassium, and chlorine
D)  Carbon, oxygen, hydrogen, nitrogen, sodium, and potassium
E)  Carbon, oxygen, hydrogen, nitrogen, calcium, and phosphorusF) A) and C)
G) A) and E)

Question 15

The pH of blood plasma is approximately 7.4,which is slightly acidic.

Accepted Answer

A) True 
 B)False

Question 16

Proteins perform all of the following functions except __________.

Accepted Answer

A)  catalyze metabolic reactions
B)  give structural strength to cells and tissues
C)  produce muscular and other forms of movement
D)  regulate transport of solutes into and out of cells
E)  store hereditary informationF) C) and D)
G) A) and D)

Question 17

In the following reaction,what is(are) the product(s) ? CO2 + H2O ---> H2CO3

Accepted Answer

A)  H2CO3
B)  CO2 and H2O
C)  CO2 and H2CO3
D)  H2O and H2CO3E) B) and C)
F) A) and D)

Question 18

An enzyme is substrate-specific because of the shape of its __________.

Accepted Answer

A)  active site
B)  receptor
C)  secondary structure
D)  terminal amino acid
E)  alpha chainF) A) and D)
G) B) and E)

Question 19

Which of these is a cation? Check all that apply.
_____ O2
__X__ K+
__X__ Na+
__X__ Ca2+
_____ Cl-

Accepted Answer

A cation is a positively charged ion, wh...

Question 20

ATP__________ endergonic and exergonic reactions.

Accepted Answer

A)  opposes
B)  decomposes
C)  reduces
D)  links
E)  dehydratesF) C) and E)
G) A) and E)

Exam 2: The Chemistry of Life

ATP__________ endergonic and exergonic reactions.

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Minerals are organic elements extracted from the soil by plants.

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When jumping into water you notice resistance.This resistance is caused by water's __________.

Correct AnswerverifiedShow Answer

Which of the following equations depicts an exchange reaction?

Correct AnswerverifiedShow Answer

Proteoglycans are composed of __________.

Correct AnswerverifiedShow Answer

Potential energy stored in bonds is released as __________ energy.

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The pH of blood plasma is approximately 7.4,which is slightly acidic.

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In the following reaction,what is(are) the product(s) ? CO2 + H2O ---> H2CO3

Correct AnswerverifiedShow Answer

A chemical reaction that removes electrons from an atom is called a(n) __________ reaction.

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An atom with 12 electrons,13 neutrons,and 11 protons is a(n) __________.

Correct AnswerverifiedShow Answer

__________ account for 98.5% of the body's weight.

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Which of these is a cation? Check all that apply. _____ O2 __X__ K+ __X__ Na+ __X__ Ca2+ _____ Cl-

Correct AnswerAnswered by ExamLex AIA cation is a positively charged ion, wh...View AnswerShow Answer

All amino acids have both a carboxyl group and an amino group attached to a central carbon.

Correct AnswerverifiedShow Answer

An enzyme is substrate-specific because of the shape of its __________.

Correct AnswerverifiedShow Answer

In an exchange reaction,covalent bonds are broken and new covalent bonds are formed.

Correct AnswerverifiedShow Answer

__________ are major components of cell membranes,and are said to be __________.

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Which of the following is not a nucleotide?

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The breakdown of glucose to yield carbon dioxide,oxygen,and ATP can be described as __________.

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Proteins perform all of the following functions except __________.

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Sodium has an atomic number of 11 and an atomic mass of 23.Sodium has __________.

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In the following reaction,what is(are) the product(s) ? CO₂ + H₂O ---> H₂CO₃

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Which of these is a cation? Check all that apply. _ O₂ X K+ X Na+ X Ca²⁺ _ Cl^-

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A cation is a positively charged ion, wh...
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are major components of cell membranes,and are said to be .

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