Question 1

Which of the following represents a synthesis reaction?

Accepted Answer

A)  AB → A + B
B)  A + B → AB
C)  AB + XY → AX + BY
D)  AB + XY ↔ AX + BYE) A) and B)
F) None of the above

Question 2

All of the following are lipids except

Accepted Answer

A)  cholesterol.
B)  starch.
C)  phospholipid.
D)  wax.
E)  triglyceride.F) A) and E)
G) All of the above

Question 3

Which is not true about enzymes?

Accepted Answer

A)  Enzymes are found in all cells.
B)  Enzymes are catalysts.
C)  Enzymes participate in the cell's chemical reactions.
D)  Enzymes can be denatured by heat and other agents.
E)  Enzymes have high-energy bonds between phosphates.F) B) and D)
G) B) and E)

Question 4

The only part of an amino acid that differs from other amino acids is its R group.

Accepted Answer

A) True 
 B)False

Question 5

Replication is the cellular process that copies the DNA prior to cell division.

Accepted Answer

A) True 
 B)False

Question 6

Two or more atoms bonded together are called a/an

Accepted Answer

A)  ion.
B)  isotope.
C)  element.
D)  electrolyte.
E)  molecule.F) B) and E)
G) A) and B)

Question 7

Which of the following functional groups participate in the formation of an ester bond?

Accepted Answer

A)  hydroxyl group and amino group
B)  carboxyl group and amino group
C)  hydroxyl group and carboxyl group
D)  hydroxyl group and carbonyl groupE) A) and D)
F) A) and C)

Question 8

Chemical analysis of an unidentified compound isolated from cells showed the presence of carbon, hydrogen, oxygen, nitrogen, and sulfur.This unknown compound is most likely a

Accepted Answer

A)  carbohydrate.
B)  nucleic acid.
C)  lipid.
D)  protein.E) B) and D)
F) B) and C)

Question 9

One nucleotide contains

Accepted Answer

A)  one phosphate.
B)  one pentose.
C)  one nitrogen base.
D)  All of these choices are correct.E) C) and D)
F) B) and C)

Question 10

The weak, attractive force between water molecules is due to

Accepted Answer

A)  hydrogen bonds.
B)  covalent bonds.
C)  ionic bonds.
D)  peptide bonds.
E)  glycosidic bonds.F) D) and E)
G) B) and D)

Question 11

The nucleic acid that delivers the correct amino acid to the ribosome for protein synthesis is

Accepted Answer

A)  rRNA.
B)  DNA.
C)  tRNA.
D)  mRNA.
E)  ATP.F) C) and D)
G) A) and B)

Question 12

Jim needs to prepare one liter of a 4% NaCl solution.How much NaCl should he weigh out?

Accepted Answer

A)  0.4 grams
B)  4.0 grams
C)  40 grams
D)  400 gramsE) A) and B)
F) None of the above

Question 13

A fat is called _____ if all carbons of the fatty acid chain are single bonded to 2 other carbons and 2 hydrogens.

Accepted Answer

The answer of A fat is called _____ if all...

Question 14

Which of the following is the stored form of carbohydrates in animals?

Accepted Answer

A)  glycogen
B)  maltose
C)  starch
D)  cellulose
E)  galactoseF) A) and E)
G) A) and D)

Question 15

Nucleic acids have primary, secondary, tertiary, and quaternary levels of organization.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following represents an exchange reaction?

Accepted Answer

A)  AB → A + B
B)  A + B → AB
C)  X + Y → XYD
D)  AB + XY ↔ AX + BYE) All of the above
F) B) and C)

Question 17

What is the maximum number of electrons in the second energy shell of an atom?

Accepted Answer

A)  2
B)  4
C)  8
D)  18
E)  32F) A) and D)
G) B) and E)

Question 18

The neutrons of an atom are

Accepted Answer

A)  always equal to the number of protons in an atom.
B)  found in the nucleus.
C)  used to determine atomic number.
D)  positively charged.
E)  moving in pathways called orbitals.F) None of the above
G) B) and D)

Question 19

A monosaccharide with 5 carbon atoms will have _____ hydrogen atoms and _____ oxygen atoms.

Accepted Answer

A)  10; 5
B)  5; 10
C)  5; 5
D)  10; 10
E)  2; 1F) A) and E)
G) A) and C)

Question 20

Which of the following functional groups is mismatched to the organic compound?

Accepted Answer

A)  phosphate - carbohydrates
B)  sulfhydryl - proteins
C)  amino - proteins
D)  hydroxyl - alcohols
E)  carboxyl - fatty acidsF) A) and D)
G) A) and B)

Exam 2: The Chemistry of Biology

Which of the following represents a synthesis reaction?

Correct AnswerverifiedShow Answer

Replication is the cellular process that copies the DNA prior to cell division.

Correct AnswerverifiedShow Answer

A monosaccharide with 5 carbon atoms will have _____ hydrogen atoms and _____ oxygen atoms.

Correct AnswerverifiedShow Answer

The only part of an amino acid that differs from other amino acids is its R group.

Correct AnswerverifiedShow Answer

Which of the following functional groups participate in the formation of an ester bond?

Correct AnswerverifiedShow Answer

All of the following are lipids except

Correct AnswerverifiedShow Answer

Chemical analysis of an unidentified compound isolated from cells showed the presence of carbon, hydrogen, oxygen, nitrogen, and sulfur.This unknown compound is most likely a

Correct AnswerverifiedShow Answer

A fat is called _____ if all carbons of the fatty acid chain are single bonded to 2 other carbons and 2 hydrogens.

Correct AnswerverifiedShow Answer

The weak, attractive force between water molecules is due to

Correct AnswerverifiedShow Answer

The nucleic acid that delivers the correct amino acid to the ribosome for protein synthesis is

Correct AnswerverifiedShow Answer

Which is not true about enzymes?

Correct AnswerverifiedShow Answer

What is the maximum number of electrons in the second energy shell of an atom?

Correct AnswerverifiedShow Answer

Jim needs to prepare one liter of a 4% NaCl solution.How much NaCl should he weigh out?

Correct AnswerverifiedShow Answer

Which of the following represents an exchange reaction?

Correct AnswerverifiedShow Answer

Two or more atoms bonded together are called a/an

Correct AnswerverifiedShow Answer

One nucleotide contains

Correct AnswerverifiedShow Answer

The neutrons of an atom are

Correct AnswerverifiedShow Answer

Which of the following is the stored form of carbohydrates in animals?

Correct AnswerverifiedShow Answer

Nucleic acids have primary, secondary, tertiary, and quaternary levels of organization.

Correct AnswerverifiedShow Answer

Which of the following functional groups is mismatched to the organic compound?

Correct AnswerverifiedShow Answer

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A monosaccharide with 5 carbon atoms will have _ hydrogen atoms and _ oxygen atoms.

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