Question 1

What is the building block molecule of a protein?

Accepted Answer

A)   monosaccharide
B)   amino acid
C)   nucleic acid
D)   fatty acid
E)   glycerolF) None of the above
G) C) and E)

Question 2

Large carbohydrates are formed from smaller units called

Accepted Answer

A)   lipids.
B)   phosphate groups.
C)   amino acids.
D)   monosaccharides.
E)   steroids.F) A) and D)
G) C) and E)

Question 3

Which of the following is determined by sequence of amino acids bound by peptide bonds?

Accepted Answer

A)   primary structure of protein
B)   secondary structure of protein
C)   amino acid
D)   denaturation
E)   peptide bondF) A) and E)
G) A) and B)

Question 4

A solution that contains one osmole of solute in one kilogram (kg)  of water is called a

Accepted Answer

A)   1% solution.
B)   1 molar solution.
C)   10% solution.
D)   1 osmolal solution.
E)   None of these choices are correct.F) All of the above
G) B) and E)

Question 5

-The sodium chloride molecule breaks apart in water. What does "D" represent?

Accepted Answer

A)   chloride ion
B)   dissociation
C)   water molecule
D)   sodium ion
E)   salt crystalF) A) and B)
G) A) and C)

Question 6

Hydrogen bonds form between molecules containing _________ bonds; the hydrogen bond is between a hydrogen atom of one molecule and a partially _________ charged atom of another.

Accepted Answer

A)   polar covalent; negatively
B)   nonpolar covalent; negatively
C)   nonpolar covalent; positively
D)   polar covalent; positively
E)   ionic; positivelyF) All of the above
G) C) and E)

Question 7

An atom has an atomic number of 19 and a mass number of 39. This atom will have

Accepted Answer

A)   19 neutrons.
B)   39 neutrons.
C)   20 electrons.
D)   20 neutrons.
E)   58 neutrons.F) A) and E)
G) B) and C)

Question 8

Enzymes are proteins that increase the rate of chemical reactions by

Accepted Answer

A)   increasing the activation energy of the reaction.
B)   increasing the concentration of the reactants.
C)   decreasing the activation energy of the reaction.
D)   adjusting the temperature of the reaction.E) A) and B)
F) A) and D)

Exam 2: The Chemical Basis of Life

-The sodium chloride molecule breaks apart in water. What does "D" represent?

Correct Answer
verified

What is the building block molecule of a protein?

Correct Answer
verified

An atom has an atomic number of 19 and a mass number of 39. This atom will have

Correct Answer
verified

Hydrogen bonds form between molecules containing _ bonds; the hydrogen bond is between a hydrogen atom of one molecule and a partially _ charged atom of another.

Correct Answer
verified

Large carbohydrates are formed from smaller units called

Correct Answer
verified

A solution that contains one osmole of solute in one kilogram (kg) of water is called a

Correct Answer
verified

Which of the following is determined by sequence of amino acids bound by peptide bonds?

Correct Answer
verified

Enzymes are proteins that increase the rate of chemical reactions by

Correct Answer
verified

Exam 2: The Chemical Basis of Life

-The sodium chloride molecule breaks apart in water. What does "D" represent?

Correct AnswerverifiedShow Answer

What is the building block molecule of a protein?

Correct AnswerverifiedShow Answer

An atom has an atomic number of 19 and a mass number of 39. This atom will have

Correct AnswerverifiedShow Answer

Hydrogen bonds form between molecules containing _________ bonds; the hydrogen bond is between a hydrogen atom of one molecule and a partially _________ charged atom of another.

Correct AnswerverifiedShow Answer

Large carbohydrates are formed from smaller units called

Correct AnswerverifiedShow Answer

A solution that contains one osmole of solute in one kilogram (kg) of water is called a

Correct AnswerverifiedShow Answer

Which of the following is determined by sequence of amino acids bound by peptide bonds?

Correct AnswerverifiedShow Answer

Enzymes are proteins that increase the rate of chemical reactions by

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Hydrogen bonds form between molecules containing _ bonds; the hydrogen bond is between a hydrogen atom of one molecule and a partially _ charged atom of another.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified