Question 1

All amino acids are alike in that their R groups are polar.

Accepted Answer

A) True 
 B)False

Question 2

A solution containing 0.00001 moles of H+ has a pH of

Accepted Answer

A)   3
B)   5
C)   7
D)   9
E)   11F) None of the above
G) A) and D)

Question 3

When an ATP molecule is used to supply energy,which of the following occurs?

Accepted Answer

A)   a phosphate bond is added
B)   a phosphate bond is broken
C)   oxygen is removed
D)   oxygen is added
E)   an adenine is addedF) A) and E)
G) B) and E)

Question 4

Fats are usually of animal origin while oils are usually of plant origin.

Accepted Answer

A) True 
 B)False

Question 5

Water makes up 60-70% of total body weight.

Accepted Answer

A) True 
 B)False

Question 6

Isotopes of an element differ due to the number of

Accepted Answer

A)   protons.
B)   neutrons.
C)   electrons.
D)   both protons and electrons.
E)   neutrinos.F) A) and C)
G) B) and D)

Question 7

The main function of carbohydrates is for long-term energy storage.

Accepted Answer

A) True 
 B)False

Question 8

The function of RNA in the body is to store the genetic information in the nucleus.

Accepted Answer

A) True 
 B)False

Question 9

What is the symbol for sodium?

Accepted Answer

A)   Na
B)   S
C)   So
D)   N
E)   DmF) None of the above
G) D) and E)

Question 10

Sugars with three to seven carbon atoms are called

Accepted Answer

A)   monosaccharides.
B)   disaccharides.
C)   trisaccharides.
D)   polysaccharides.
E)   steroids.F) B) and D)
G) B) and E)

Question 11

NaCl is not an organic molecule.

Accepted Answer

A) True 
 B)False

Question 12

Radiation can produce both positive and negative effects for humans.

Accepted Answer

A) True 
 B)False

Question 13

An alpha helix or a beta sheet are examples of what level of protein structure?

Accepted Answer

A)   secondary
B)   primary
C)   tertiary
D)   quaternaryE) B) and D)
F) B) and C)

Question 14

When two amino acids combine via a dehydration reaction,

Accepted Answer

A)   a peptide bond is formed.
B)   the R groups are lost.
C)   water is added to begin the reaction.
D)   the carboxyl group of each join together.
E)   the amino group of each join together.F) B) and D)
G) C) and D)

Question 15

ATP carries energy in the form of high-energy

Accepted Answer

A)   carbohydrate bonds.
B)   peptide bonds.
C)   lipid bonds.
D)   phosphate bonds.
E)   hydrogen bondsF) A) and B)
G) All of the above

Question 16

A fat contains how many fatty acids?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5F) B) and C)
G) C) and D)

Question 17

Which of the following is not present in a nucleotide?

Accepted Answer

A)   phosphate
B)   nitrogenous base
C)   5 ring sugar
D)   an R group
E)   a pentoseF) None of the above
G) B) and E)

Question 18

Our body is capable of converting starch into glycogen.

Accepted Answer

A) True 
 B)False

Question 19

The monomer unit of a protein is

Accepted Answer

A)   fatty acids.
B)   amino acids.
C)   monosaccharides.
D)   polysaccharides.
E)   nucleic acids.F) B) and C)
G) A) and E)

Question 20

A species has 29% of its DNA composed of the nucleotide containing guanine (G) .What percent does the nitrogen base thymine (T) equal?

Accepted Answer

A)   58%
B)   42%
C)   21%
D)   67%
E)   29%F) B) and E)
G) C) and E)

Exam 2: Chemistry of Life

Fats are usually of animal origin while oils are usually of plant origin.

Correct AnswerverifiedShow Answer

The monomer unit of a protein is

Correct AnswerverifiedShow Answer

A fat contains how many fatty acids?

Correct AnswerverifiedShow Answer

The function of RNA in the body is to store the genetic information in the nucleus.

Correct AnswerverifiedShow Answer

Isotopes of an element differ due to the number of

Correct AnswerverifiedShow Answer

Radiation can produce both positive and negative effects for humans.

Correct AnswerverifiedShow Answer

An alpha helix or a beta sheet are examples of what level of protein structure?

Correct AnswerverifiedShow Answer

Sugars with three to seven carbon atoms are called

Correct AnswerverifiedShow Answer

Water makes up 60-70% of total body weight.

Correct AnswerverifiedShow Answer

Our body is capable of converting starch into glycogen.

Correct AnswerverifiedShow Answer

NaCl is not an organic molecule.

Correct AnswerverifiedShow Answer

A species has 29% of its DNA composed of the nucleotide containing guanine (G) .What percent does the nitrogen base thymine (T) equal?

Correct AnswerverifiedShow Answer

ATP carries energy in the form of high-energy

Correct AnswerverifiedShow Answer

When an ATP molecule is used to supply energy,which of the following occurs?

Correct AnswerverifiedShow Answer

All amino acids are alike in that their R groups are polar.

Correct AnswerverifiedShow Answer

What is the symbol for sodium?

Correct AnswerverifiedShow Answer

A solution containing 0.00001 moles of H+ has a pH of

Correct AnswerverifiedShow Answer

When two amino acids combine via a dehydration reaction,

Correct AnswerverifiedShow Answer

Which of the following is not present in a nucleotide?

Correct AnswerverifiedShow Answer

The main function of carbohydrates is for long-term energy storage.

Correct AnswerverifiedShow Answer

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A solution containing 0.00001 moles of H⁺ has a pH of

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