Question 1

The antimicrobial drug imidazole inhibits sterol synthesis.This would most likely interfere with

Accepted Answer

A) bacterial cell walls. 
B) fungal cell walls. 
C) eukaryotic plasma membranes. 
D) prokaryotic plasma membranes. 
E) genes. 
A) bacterial cell walls. 
B) fungal cell walls. 
C) eukaryotic plasma membranes. 
D) prokaryotic plasma membranes. 
E) genes. C

Question 2

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.cerevisiae's

Accepted Answer

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

Question 3

Which of the following statements about the atom is $\begin{array} { c } 
12 \
6
\end{array}$ C FALSE?

Accepted Answer

A) It has 6 protons in its nucleus. 
B) It has 12 neutrons in its nucleus. 
C) It has 6 electrons orbiting the nucleus. 
D) Its atomic number is 6. 
E) Its atomic weight is 12. 
A) It has 6 protons in its nucleus. 
B) It has 12 neutrons in its nucleus. 
C) It has 6 electrons orbiting the nucleus. 
D) Its atomic number is 6. 
E) Its atomic weight is 12. B

Question 4

Elements only achieve the full complement of electrons in outermost energy shells by donating away or sharing electrons.

Accepted Answer

A) True 
 B)False

Question 5

Which type of molecule NEVER contains a phosphate group?

Accepted Answer

A) triglycerides 
B) phospholipid 
C) nucleic acid 
D) ATP 
A) triglycerides 
B) phospholipid 
C) nucleic acid 
D) ATP

Question 6

You put a spoonful of table salt,NaCl,into a glass of water and it dissolves.You repeat this test,but drop the spoonful of salt into a glass of vegetable oil instead.What happens,and why?

Accepted Answer

A) The salt doesn't dissolve because oil is nonpolar,and couldn't dissociate the ionic bond between the Na⁺ and Cl⁻ ions. 
B) The salt dissolves in the oil just the same as it did in the water. 
C) The salt dissolves in the oil,but takes much longer to do so because oil molecules move more slowly than water,slowing the dissolution process down. 
D) The salt doesn't dissolve because oil is polar,and only nonpolar solvents would cause the dissociation of the Na⁺ and Cl⁻ ions in the table salt. 
A) The salt doesn't dissolve because oil is nonpolar,and couldn't dissociate the ionic bond between the Na⁺ and Cl⁻ ions. 
B) The salt dissolves in the oil just the same as it did in the water. 
C) The salt dissolves in the oil,but takes much longer to do so because oil molecules move more slowly than water,slowing the dissolution process down. 
D) The salt doesn't dissolve because oil is polar,and only nonpolar solvents would cause the dissociation of the Na⁺ and Cl⁻ ions in the table salt.

Question 7

Which type of molecule is composed of (CH₂O)units?

Accepted Answer

A) carbohydrate 
B) lipid 
C) nucleic acid 
D) protein 
A) carbohydrate 
B) lipid 
C) nucleic acid 
D) protein

Question 8

Identify the two functional groups that interact to form a peptide bond.

Accepted Answer

A) amino group and carboxyl group 
B) carboxyl group and ester group 
C) amino group and ester group 
D) ester group and hydroxyl group 
E) hydroxyl group and amino group 
A) amino group and carboxyl group 
B) carboxyl group and ester group 
C) amino group and ester group 
D) ester group and hydroxyl group 
E) hydroxyl group and amino group

Question 9

A friend tells you that he recently read an article claiming that you need to work to restore the alkalinity of your blood to remain healthy.Why is this impossible and impractical (and unhealthy even if you could make it happen)?

Accepted Answer

A) The normal pH of human blood is in the acidic range,so making it alkaline would kill you. 
B) Blood is usually around the neutral (pH 7)range,not the alkaline range,in healthy human beings. 
C) Blood contains buffers that prevent the pH from changing too drastically,so trying to forcibly alter blood pH wouldn't work effectively. 
D) The normal pH of human blood is already in the alkaline range,so it isn't necessary to "restore" it to that point. 
E) Blood is usually around the neutral (pH 7)range,not the alkaline range,in healthy human beings AND blood contains buffers that prevent the pH from changing too drastically,so trying to forcibly alter blood pH wouldn't work effectively. 
A) The normal pH of human blood is in the acidic range,so making it alkaline would kill you. 
B) Blood is usually around the neutral (pH 7)range,not the alkaline range,in healthy human beings. 
C) Blood contains buffers that prevent the pH from changing too drastically,so trying to forcibly alter blood pH wouldn't work effectively. 
D) The normal pH of human blood is already in the alkaline range,so it isn't necessary to "restore" it to that point. 
E) Blood is usually around the neutral (pH 7)range,not the alkaline range,in healthy human beings AND blood contains buffers that prevent the pH from changing too drastically,so trying to forcibly alter blood pH wouldn't work effectively.

Question 10

Which of the following is a base?

Accepted Answer

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

Question 11

Carbon dioxide is an organic molecule.

Accepted Answer

A) True 
 B)False

Question 12

What is the type of weak bond between the hydrogen of one molecule and the nitrogen of another molecule,where the two don't actively share an electron?

Accepted Answer

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

Question 13

A scientist claims that when a protein is denatured,it can be expected that its secondary structure will more likely be retained when compared to all other levels of protein structure structures.Do you agree? Explain.

Accepted Answer

I do not agree with the scientist's clai

Question 14

Two glucose molecules are combined by a dehydration synthesis reaction to make a maltose molecule.What is the chemical formula for maltose?

Accepted Answer

A) C₃H₆O₃ 
B) C₆H₁₂O₆ 
C) C₁₂H₂₄O₁₂ 
D) C₁₂H₂₂O₁₁ 
E) C₁₂H₂₃O₁₀ 
A) C₃H₆O₃ 
B) C₆H₁₂O₆ 
C) C₁₂H₂₄O₁₂ 
D) C₁₂H₂₂O₁₁ 
E) C₁₂H₂₃O₁₀

Question 15

Subtle differences exist in the plasma membrane molecules of the organisms in the three Domains._______ functional groups are found in the plasma membrane molecules of bacteria and eukarya,while ________ functional groups are found in the plasma membrane molecules of archaea.

Accepted Answer

A) amino;carboxyl 
B) ether;ester 
C) ester;ether 
D) ketone;aldehyde 
E) aldehyde;ketone 
A) amino;carboxyl 
B) ether;ester 
C) ester;ether 
D) ketone;aldehyde 
E) aldehyde;ketone

Question 16

All forms of life function optimally at a pH of 7.

Accepted Answer

A) True 
 B)False

Question 17

Structurally,ATP is most like which type of molecule?

Accepted Answer

A) carbohydrate 
B) lipid 
C) protein 
D) nucleic acid 
A) carbohydrate 
B) lipid 
C) protein 
D) nucleic acid

Question 18

Which type of molecule contains -NH₂ (amino)groups?

Accepted Answer

A) carbohydrate 
B) triglycerides 
C) nucleic acid 
D) protein 
A) carbohydrate 
B) triglycerides 
C) nucleic acid 
D) protein

Question 19

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

Accepted Answer

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

Question 20

Antacids neutralize acid by the following reaction.Identify the salt in the following equation: Mg(OH)₂ + 2HCl → MgCl₂ + H₂O

Accepted Answer

A) Mg(OH)₂ 
B) HCl 
C) MgCl₂ 
D) H₂O 
E) None of the answers is correct. 
A) Mg(OH)₂ 
B) HCl 
C) MgCl₂ 
D) H₂O 
E) None of the answers is correct.

Exam 2: Chemical Principles

The antimicrobial drug imidazole inhibits sterol synthesis.This would most likely interfere with

Which of the following statements about the atom is 12 6 C FALSE?

Elements only achieve the full complement of electrons in outermost energy shells by donating away or sharing electrons.

Which type of molecule NEVER contains a phosphate group?

You put a spoonful of table salt,NaCl,into a glass of water and it dissolves.You repeat this test,but drop the spoonful of salt into a glass of vegetable oil instead.What happens,and why?

Which type of molecule is composed of (CH₂O)units?

Identify the two functional groups that interact to form a peptide bond.

A friend tells you that he recently read an article claiming that you need to work to restore the alkalinity of your blood to remain healthy.Why is this impossible and impractical (and unhealthy even if you could make it happen)?

Which of the following is a base?

Carbon dioxide is an organic molecule.

What is the type of weak bond between the hydrogen of one molecule and the nitrogen of another molecule,where the two don't actively share an electron?

A scientist claims that when a protein is denatured,it can be expected that its secondary structure will more likely be retained when compared to all other levels of protein structure structures.Do you agree? Explain.

Two glucose molecules are combined by a dehydration synthesis reaction to make a maltose molecule.What is the chemical formula for maltose?

Subtle differences exist in the plasma membrane molecules of the organisms in the three Domains._______ functional groups are found in the plasma membrane molecules of bacteria and eukarya,while ________ functional groups are found in the plasma membrane molecules of archaea.

All forms of life function optimally at a pH of 7.

Structurally,ATP is most like which type of molecule?

Which type of molecule contains -NH₂ (amino)groups?

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

Antacids neutralize acid by the following reaction.Identify the salt in the following equation: Mg(OH)₂ + 2HCl → MgCl₂ + H₂O

The Microbial World and You

Observing Microorganisms Through a Microscope

Functional Anatomy of Prokaryotic and Eukaryotic

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 Diseases of the Urinary and Reproductive Systems

Environmental Microbiology

Applied and Industrial Microbiology

Filters

Subtle differences exist in the plasma membrane molecules of the organisms in the three Domains._ functional groups are found in the plasma membrane molecules of bacteria and eukarya,while __ functional groups are found in the plasma membrane molecules of archaea.