Question 1

A basic solution is expected to contain more hydrogen ions than hydroxyl ions.

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

Starch,dextran,glycogen,and cellulose are polymers of

Accepted Answer

A) amino acids. 
B) glucose. 
C) fatty acids. 
D) nucleic acids. 
E) acids. 
A) amino acids. 
B) glucose. 
C) fatty acids. 
D) nucleic acids. 
E) acids.

Question 4

In terms of similarities,which two molecules would be isomers of each other?

Accepted Answer

A) glucose and sucrose 
B) glucose and maltose 
C) sucrose and fructose 
D) fructose and glucose 
A) glucose and sucrose 
B) glucose and maltose 
C) sucrose and fructose 
D) fructose and glucose

Question 5

What is the main/most important factor that differentiates methanol,ethanol,and isopropanol from each other?

Accepted Answer

A) the specific location of the hydroxyl functional group 
B) the number of carbon atoms in the molecule 
C) the number of hydrogen atoms in each molecule 
D) the location of the carboxyl functional group 
E) the number of hydroxyl functional groups present 
A) the specific location of the hydroxyl functional group 
B) the number of carbon atoms in the molecule 
C) the number of hydrogen atoms in each molecule 
D) the location of the carboxyl functional group 
E) the number of hydroxyl functional groups present

Question 6

Figure 2.1
  
-Which compound in Figure 2.1 is an ester?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e

Question 7

Covalent bonds are always shared equally.

Accepted Answer

A) True 
 B)False

Question 8

Which type of molecule contains the alcohol glycerol?

Accepted Answer

A) carbohydrate 
B) phospholipids 
C) DNA 
D) protein 
A) carbohydrate 
B) phospholipids 
C) DNA 
D) protein

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

Figure 2.1
  
-In Figure 2.1,which is an alcohol?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e

Question 11

Which of the following pairs is mismatched?

Accepted Answer

A) NaOH ⇌ Na⁺ + OH⁻ is a base 
B) HF ⇌ H⁺ + F⁻ is an acid 
C) MgSO₄ ⇌ Mg²⁺ + $\mathrm { SO } _ { 4 } ^ { 2 - }$ is a salt 
D) KH₂PO₄ ⇌ K⁺ + H₂ $\mathrm { PO } _ { 4 }$ is an acid 
E) H₂SO₄ ⇌ 2H⁺ + $\mathrm { SO } _ { 4 } ^ { 2 - }$ is an acid 
A) NaOH ⇌ Na⁺ + OH⁻ is a base 
B) HF ⇌ H⁺ + F⁻ is an acid 
C) MgSO₄ ⇌ Mg²⁺ + $\mathrm { SO } _ { 4 } ^ { 2 - }$ is a salt 
D) KH₂PO₄ ⇌ K⁺ + H₂ $\mathrm { PO } _ { 4 }$ is an acid 
E) H₂SO₄ ⇌ 2H⁺ + $\mathrm { SO } _ { 4 } ^ { 2 - }$ is an acid

Question 12

What is the type of bond holding hydrogen and oxygen atoms together in a single H₂O molecule?

Accepted Answer

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

Question 13

Identify the following reaction: Lactose + H₂O → Glucose + Galactose

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 14

Water has recently been discovered to be lying just underneath the soil on Mars.This means it is possible life as we know it may also exist (or may once have existed)on Mars.

Accepted Answer

A) True 
 B)False

Question 15

Figure 2.5
   
Use Figure 2.5 to answer the following.Starch,cellulose,dextran,and glycogen are polysaccharides.How are they similar? To what are their different properties due? Why can't an enzyme that hydrolyzes starch degrade cellulose?

Accepted Answer

The answer of Figure 2.5
   
Use Figure 2.5...

Question 16

Which of the following is the type of bond holding K⁺ and I⁻ ions in KI?

Accepted Answer

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

Question 17

Table 2.1 $${ } _ { 8 } ^ { 16 } \mathrm { O } \quad { } _ { 6 } ^ { 12 } \mathrm { C } \quad { } _ { 1 } ^ { 1 } \mathrm { H }$$
Using the information in Table 2.1,calculate the molecular weight of ethanol,C₂H₅OH.

Accepted Answer

A) 96 
B) 46 
C) 34 
D) 33 
E) The answer cannot be determined. 
A) 96 
B) 46 
C) 34 
D) 33 
E) The answer cannot be determined.

Question 18

An E.coli culture that has been growing at 37°C is moved to 25°C.Which of the following changes must be made in its plasma membrane to help it cope with the decrease in temperature?

Accepted Answer

A) The number of phosphate groups must increase. 
B) The viscosity must increase. 
C) The number of saturated chains must increase. 
D) The number of unsaturated chains must increase. 
E) No changes are necessary. 
A) The number of phosphate groups must increase. 
B) The viscosity must increase. 
C) The number of saturated chains must increase. 
D) The number of unsaturated chains must increase. 
E) No changes are necessary.

Question 19

Which are the primary molecules making up plasma membranes in cells?

Accepted Answer

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

Question 20

Which of the following statements is FALSE?

Accepted Answer

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

Exam 2: Chemical Principles

A basic solution is expected to contain more hydrogen ions than hydroxyl ions.

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

Starch,dextran,glycogen,and cellulose are polymers of

In terms of similarities,which two molecules would be isomers of each other?

What is the main/most important factor that differentiates methanol,ethanol,and isopropanol from each other?

Figure 2.1 -Which compound in Figure 2.1 is an ester?

Covalent bonds are always shared equally.

Which type of molecule contains the alcohol glycerol?

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

Figure 2.1 -In Figure 2.1,which is an alcohol?

Which of the following pairs is mismatched?

What is the type of bond holding hydrogen and oxygen atoms together in a single H₂O molecule?

Identify the following reaction: Lactose + H₂O → Glucose + Galactose

Water has recently been discovered to be lying just underneath the soil on Mars.This means it is possible life as we know it may also exist (or may once have existed)on Mars.

Figure 2.5 Use Figure 2.5 to answer the following.Starch,cellulose,dextran,and glycogen are polysaccharides.How are they similar? To what are their different properties due? Why can't an enzyme that hydrolyzes starch degrade cellulose?

Which of the following is the type of bond holding K⁺ and I⁻ ions in KI?

Table 2.1 816O612C11H{ } _ { 8 } ^ { 16 } \mathrm { O } \quad { } _ { 6 } ^ { 12 } \mathrm { C } \quad { } _ { 1 } ^ { 1 } \mathrm { H }816​O612​C11​H Using the information in Table 2.1,calculate the molecular weight of ethanol,C₂H₅OH.

An E.coli culture that has been growing at 37°C is moved to 25°C.Which of the following changes must be made in its plasma membrane to help it cope with the decrease in temperature?

Which are the primary molecules making up plasma membranes in cells?

Which of the following statements is FALSE?

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

Table 2.1 ${ } _ { 8 } ^ { 16 } \mathrm { O } \quad { } _ { 6 } ^ { 12 } \mathrm { C } \quad { } _ { 1 } ^ { 1 } \mathrm { H }$ Using the information in Table 2.1,calculate the molecular weight of ethanol,C₂H₅OH.