Question 1

A reaction where an electron is lost is called ______.

Accepted Answer

A)  oxidation
B)  reduction
C)  ionization
D)  decomposition
E)  dissolutionF) B) and C)
G) All of the above

Question 2

A culture of an organism believed to cause intestinal symptoms is viewed under the microscope, and the microbiologist observes a cell membrane, flagella, mitochondria, and some dark unrecognizable structures within each cell.The microbiologist notes that the cells are eukaryotic because

Accepted Answer

A)  the dark structures must be the cell nuclei.
B)  only eukaryotic cells have a cell membrane.
C)  only eukaryotic cells have flagella.
D)  only eukaryotic cells have mitochondria.E) All of the above
F) A) and C)

Question 3

ATP is best described as

Accepted Answer

A)  a double helix.
B)  the energy molecule of cells.
C)  an electron carrier.
D)  an enzyme.E) B) and D)
F) B) and C)

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

NASA has published a list of criteria for identifying fossil bacteria in samples from Mars, as part of a search for evidence of life.Which of the following is good evidence for the presence of bacterial cells?

Accepted Answer

A)  Three-dimensional organization of cells in a starburst pattern
B)  No evidence of water in the surrounding mineral
C)  Cell size of 0.5 to 2 microns
D)  Absence of carbon in the materialE) C) and D)
F) A) and C)

Question 6

Hydrogen bonds

Accepted Answer

A)  result from attractive forces between molecules with polar covalent bonds.
B)  are the strongest bonds between molecules.
C)  result from attractive forces between molecules with polar ionic bonds.
D)  result from attractive forces between molecules with nonpolar ionic bonds.
E)  result from attractive forces between molecules with nonpolar covalent bonds.F) B) and E)
G) A) and B)

Question 7

Cations are

Accepted Answer

A)  atoms without protons.
B)  charged subatomic particles.
C)  atoms that have gained electrons.
D)  capable of forming ionic bonds with anions.
E)  atoms that have gained neutrons.F) A) and E)
G) A) and D)

Question 8

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

Accepted Answer

A) True 
 B)False

Question 9

Which of the following statements is incorrect regarding protein structure?

Accepted Answer

A)  Proteins, such as antibodies that are comprised of multiple polypeptide chains, have quaternary structure.
B)  The folding of a protein to form its active site creates its tertiary structure.
C)  Beta-pleated sheets are a type of protein secondary structure.
D)  The sequence of nucleotides determines the primary structure of a protein.E) None of the above
F) A) and B)

Question 10

ATP differs from the nucleotides found in DNA in the

Accepted Answer

A)  use of phosphate instead of sulfate in the backbone.
B)  use of phosphorus in the nitrogenous base portion of the molecule.
C)  sugar portion of the molecule.
D)  use of uracil in the nitrogenous base portion of the molecule.
E)  use of adenosine instead of adenine.F) A) and B)
G) A) and E)

Question 11

The concentration of a solution expresses the amount of solvent present.

Accepted Answer

A) True 
 B)False

Question 12

The lipid group that is the major component of cell membranes is the ______.

Accepted Answer

A)  waxes
B)  steroids
C)  prostaglandins
D)  triglycerides
E)  phospholipidsF) A) and C)
G) A) and E)

Question 13

Organic chemicals always have a basic framework of the element _____ bonded to other atoms.

Accepted Answer

A)  oxygen
B)  phosphorous
C)  nitrogen
D)  hydrogen
E)  carbonF) A) and B)
G) All of the above

Question 14

Burning coal produces sulfur dioxide in the atmosphere.When combined with rain that falls into bodies of water, this leads to

Accepted Answer

A)  a greater concentration of OH- ions in the water.
B)  a decrease in the pH level of the water.
C)  an increase in pH level of the water.
D)  no change in the pH level of the water.E) All of the above
F) B) and D)

Question 15

A capillary tube is used to acquire a small blood sample for CBC (complete blood count)  analysis.Suction is not required to transfer the blood from the fingertip prick to the tube in part due to

Accepted Answer

A)  covalent bonding between the water molecules.
B)  cohesive forces between the glass particles of the tube and the water molecules.
C)  ionic bonding between the water molecules.
D)  adhesive forces between the water molecules and the glass particles of the tube.E) B) and D)
F) None of the above

Question 16

Starch is the primary storage food for all of the following except ______.

Accepted Answer

A)  algae
B)  some fungi
C)  green plants
D)  animalsE) A) and D)
F) None of the above

Question 17

All of the following pertain to the atom Carbon-14 except it

Accepted Answer

A)  has 14 neutrons.
B)  is an isotope of carbon.
C)  has 6 protons.
D)  has 6 electrons.E) C) and D)
F) None of the above

Question 18

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) All of the above
G) B) and D)

Question 19

What would be the valence number of electrons in the sulfur (S)  atom? Its atomic number is 16.

Accepted Answer

A)  2
B)  6
C)  8
D)  16
E)  32F) A) and B)
G) B) and D)

Question 20

Which of the following functional groups is mismatched to the organic compound in which it is typically found?

Accepted Answer

A)  Carboxyl - fatty acids
B)  Amino - proteins
C)  Hydroxyl - alcohols
D)  Sulfhydryl - proteins
E)  Phosphate - carbohydratesF) D) and E)
G) C) and D)

Exam 2: The Chemistry of Biology

Cations are

Correct AnswerverifiedShow Answer

All of the following pertain to the atom Carbon-14 except it

Correct AnswerverifiedShow Answer

Starch is the primary storage food for all of the following except ______.

Correct AnswerverifiedShow Answer

Organic chemicals always have a basic framework of the element _____ bonded to other atoms.

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 in which it is typically found?

Correct AnswerverifiedShow Answer

Burning coal produces sulfur dioxide in the atmosphere.When combined with rain that falls into bodies of water, this leads to

Correct AnswerverifiedShow Answer

ATP differs from the nucleotides found in DNA in the

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following statements is incorrect regarding protein structure?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

NASA has published a list of criteria for identifying fossil bacteria in samples from Mars, as part of a search for evidence of life.Which of the following is good evidence for the presence of bacterial cells?

Correct AnswerverifiedShow Answer

A reaction where an electron is lost is called ______.

Correct AnswerverifiedShow Answer

What would be the valence number of electrons in the sulfur (S) atom? Its atomic number is 16.

Correct AnswerverifiedShow Answer

A culture of an organism believed to cause intestinal symptoms is viewed under the microscope, and the microbiologist observes a cell membrane, flagella, mitochondria, and some dark unrecognizable structures within each cell.The microbiologist notes that the cells are eukaryotic because

Correct AnswerverifiedShow Answer

The lipid group that is the major component of cell membranes is the ______.

Correct AnswerverifiedShow Answer

ATP is best described as

Correct AnswerverifiedShow Answer

Hydrogen bonds

Correct AnswerverifiedShow Answer

The concentration of a solution expresses the amount of solvent present.

Correct AnswerverifiedShow Answer

A capillary tube is used to acquire a small blood sample for CBC (complete blood count) analysis.Suction is not required to transfer the blood from the fingertip prick to the tube in part due to

Correct AnswerverifiedShow Answer

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