Question 1

There are some forms of life on Earth that can survive without water.

Accepted Answer

A) True 
 B)False

Question 2

Describe how the properties of phospholipids make these molecules well suited for plasma membranes.

Accepted Answer

Phospholipids are well suited for plasma

Question 3

Radioisotopes are frequently used to label molecules in a cell. The fate of atoms and molecules in a cell can then be followed. Assume Saccharomyces cerevisiae is grown in a nutrient medium containing the radioisotope 32P. After a 48-hour incubation, the majority of the 32P would be found in the S. cerevisiaeʹs

Accepted Answer

A)  cell wall. 
B)  water. 
C)  proteins. 
D)  plasma membrane. 
E)  carbohydrates. 
A)  cell wall. 
B)  water. 
C)  proteins. 
D)  plasma membrane. 
E)  carbohydrates.

Question 4

Identify the following reaction: NH4OH ⇌ NH3 + H2O

Accepted Answer

A)  dehydration synthesis reaction 
B)  hydrolysis reaction 
C)  exchange reaction 
D)  reversible reaction 
E)  ionic reaction 
A)  dehydration synthesis reaction 
B)  hydrolysis reaction 
C)  exchange reaction 
D)  reversible reaction 
E)  ionic reaction

Question 5

Most amino acids found in cells demonstrate what type of chirality?

Accepted Answer

A)  A-isomers 
B)  L-isomers 
C)  D-isomers 
D)  C-isomers 
E)  B-isomers 
A)  A-isomers 
B)  L-isomers 
C)  D-isomers 
D)  C-isomers 
E)  B-isomers

Question 6

Radioisotopes are frequently used to label molecules in a cell. The fate of atoms and molecules in a cell can then be followed. Assume Saccharomyces cerevisiae is grown in a nutrient medium containing the radioisotope 35S. After a 48-hour incubation, the 35S would most likely be found in the S. cerevisiaeʹs

Accepted Answer

A)  proteins. 
B)  nucleic acids. 
C)  lipids. 
D)  carbohydrates. 
E)  water. 
A)  proteins. 
B)  nucleic acids. 
C)  lipids. 
D)  carbohydrates. 
E)  water.

Question 7

What is the type of weak bond between the hydrogen of one molecule and the nitrogen of another molecule, where the two donʹt actively share an electron?

Accepted Answer

A)  hydrogen bond 
B)  hydrophobic bond 
C)  disulfide bond 
D)  covalent bond 
E)  ionic bond 
A)  hydrogen bond 
B)  hydrophobic bond 
C)  disulfide bond 
D)  covalent bond 
E)  ionic bond

Question 8

A scientist wants to perform a test that will indicate whether a nucleic acid sample is composed of RNA or DNA. Testing for the presence of which of the following is most appropriate in this situation?

Accepted Answer

A)  thymine 
B)  guanine 
C)  uracil 
D)  nitrogen 
E)  phosphate 
A)  thymine 
B)  guanine 
C)  uracil 
D)  nitrogen 
E)  phosphate

Question 9

The formation of ADP from ATP can be defined as a hydrolytic reaction.

Accepted Answer

A) True 
 B)False

Question 10

All chemical reactions are, in theory, reversible.

Accepted Answer

A) True 
 B)False

Question 11

What do genes consist of?

Accepted Answer

A)  carbohydrates 
B)  lipids 
C)  proteins 
D)  nucleic acids 
A)  carbohydrates 
B)  lipids 
C)  proteins 
D)  nucleic acids

Question 12

Based upon the valence numbers of the elements magnesium (2) and hydrogen (1), predict how many covalent bonds would form between these atoms to achieve the full complement of electrons in their outermost energy shells.

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
A)  one 
B)  two 
C)  three 
D)  four

Question 13

Which of the following statements is FALSE?

Accepted Answer

A)  Water freezes from the top down. 
B)  Water is formed as a part of a dehydration synthesis reaction. 
C)  Water molecules are formed by hydrolysis. 
D)  Water is a polar molecule. 
E)  Salts readily dissolve in water. 
A)  Water freezes from the top down. 
B)  Water is formed as a part of a dehydration synthesis reaction. 
C)  Water molecules are formed by hydrolysis. 
D)  Water is a polar molecule. 
E)  Salts readily dissolve in water.

Question 14

What is the type of strong chemical bond between carbon, hydrogen, and oxygen atoms in a single organic molecule?

Accepted Answer

A)  hydrogen bond 
B)  ionic bond 
C)  covalent bond 
A)  hydrogen bond 
B)  ionic bond 
C)  covalent bond

Question 15

The density of liquid water is greater than the density of ice.

Accepted Answer

A) True 
 B)False

Question 16

Covalent bonds are always shared equally.

Accepted Answer

A) True 
 B)False

Question 17

Identify the following reaction: HCl + NaHCO3 → NaCl + H2CO3

Accepted Answer

A)  dehydration synthesis reaction 
B)  hydrolysis reaction 
C)  exchange reaction 
D)  reversible reaction 
E)  ionic reaction 
A)  dehydration synthesis reaction 
B)  hydrolysis reaction 
C)  exchange reaction 
D)  reversible reaction 
E)  ionic reaction

Question 18

Which of the following is a base?

Accepted Answer

A)  H2CO 
B)  C2H5OCOOH → H+ + C2H5OCOO- 
C)  NaOH → Na+ + OH- 
D)  H2O → H+ + OH- 
E)  C2H5OH 
A)  H2CO 
B)  C2H5OCOOH → H+ + C2H5OCOO- 
C)  NaOH → Na+ + OH- 
D)  H2O → H+ + OH- 
E)  C2H5OH

Question 19

Which of the following pairs is mismatched?

Accepted Answer

A)  MgSO4 ⇌ Mg2+ + SO42-  salt 
B)  KH2PO4 ⇌ K+ + H2PO4-  acid 
C)  HF ⇌ H+ + F- ‐ acid 
D)  H2SO4 ⇌ 2H+ + SO42-  acid 
E)  NaOH ⇌ Na+ + OH-  base 
A)  MgSO4 ⇌ Mg2+ + SO42-  salt 
B)  KH2PO4 ⇌ K+ + H2PO4-  acid 
C)  HF ⇌ H+ + F- ‐ acid 
D)  H2SO4 ⇌ 2H+ + SO42-  acid 
E)  NaOH ⇌ Na+ + OH-  base

Question 20

Identify the following reaction: Glucose + Fructose → Sucrose + Water

Accepted Answer

A)  dehydration synthesis reaction 
B)  hydrolysis reaction 
C)  exchange reaction 
D)  reversible reaction 
E)  ionic reaction 
A)  dehydration synthesis reaction 
B)  hydrolysis reaction 
C)  exchange reaction 
D)  reversible reaction 
E)  ionic reaction

Exam 2: Chemical Principles

There are some forms of life on Earth that can survive without water.

Describe how the properties of phospholipids make these molecules well suited for plasma membranes.

Identify the following reaction: NH4OH ⇌ NH3 + H2O

Most amino acids found in cells demonstrate what type of chirality?

What is the type of weak bond between the hydrogen of one molecule and the nitrogen of another molecule, where the two donʹt actively share an electron?

A scientist wants to perform a test that will indicate whether a nucleic acid sample is composed of RNA or DNA. Testing for the presence of which of the following is most appropriate in this situation?

The formation of ADP from ATP can be defined as a hydrolytic reaction.

All chemical reactions are, in theory, reversible.

What do genes consist of?

Based upon the valence numbers of the elements magnesium (2) and hydrogen (1), predict how many covalent bonds would form between these atoms to achieve the full complement of electrons in their outermost energy shells.

Which of the following statements is FALSE?

What is the type of strong chemical bond between carbon, hydrogen, and oxygen atoms in a single organic molecule?

The density of liquid water is greater than the density of ice.

Covalent bonds are always shared equally.

Identify the following reaction: HCl + NaHCO3 → NaCl + H2CO3

Which of the following is a base?

Which of the following pairs is mismatched?

Identify the following reaction: Glucose + Fructose → Sucrose + Water

The Microbial World and You

Observing Microorganisms Through a Microscope

Functional Anatomy of Prokaryotic and Eukaryotic Cells

Microbial Metabolism

Microbial Growth

The Control of Microbial Growth

Microbial Genetics

Biotechnology and Dna Technology

Classification of Microorganisms

The Prokaryotes: Domains Bacteria and Archaea

The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

Viruses, Viroids, and Prions

Principles of Disease and Epidemiology

Microbial Mechanisms of Pathogenicity

Innate Immunity: Nonspecific Defenses of the Host

Adaptive Immunity: Specific Defenses of the Host

Practical Applications of Immunology

Disorders Associated With the Immune System

Antimicrobial Drugs

Microbial Diseases of the Skin and Eyes

Microbial Diseases of the Nervous System

Microbial Diseases of the Cardiovascular and Lymphatic Systems

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Disease of the Urinary and Reproductive Systems

Environmental Microbiology

Applied and Industrial Microbiology

Filters

Identify the following reaction: NH4OH ⇌ NH3 + H₂O

Identify the following reaction: HCl + NaHCO3 → NaCl + H₂CO3