Question 1

The total number of protons in an atom is equal to its

Accepted Answer

A)  atomic weight 
B)  molecular weight 
C)  chemical weight 
D)  atomic number 
A)  atomic weight 
B)  molecular weight 
C)  chemical weight 
D)  atomic number

Question 2

Disaccharides,such as sucrose and lactose,are formed from

Accepted Answer

A)  two monosaccharides connected by a glycoside bond 
B)  chains of two amino acids 
C)  a long chain of carbon atoms and a carboxyl group at one end of the chain 
D)  three fatty acids combined with glycerol 
A)  two monosaccharides connected by a glycoside bond 
B)  chains of two amino acids 
C)  a long chain of carbon atoms and a carboxyl group at one end of the chain 
D)  three fatty acids combined with glycerol

Question 3

Fatty acids that are _________ have ___________ .

Accepted Answer

A)  saturated ; lost their secondary structure 
B)  unsaturated, a double bond between two carbons that have lost hydrogen atoms 
C)  saturated, one or more double bonds 
D)  denatured, all the hydrogen they can. 
A)  saturated ; lost their secondary structure 
B)  unsaturated, a double bond between two carbons that have lost hydrogen atoms 
C)  saturated, one or more double bonds 
D)  denatured, all the hydrogen they can.

Question 4

Which is a false statement about water?

Accepted Answer

A)  water molecules are polar 
B)  it has a high specific heat because of the extensive covalent bonds between molecules 
C)  hydrogen atoms in water form a region with a partial positive charge 
D)  water's polarity allows for many ionic compounds to be dissolved in it 
A)  water molecules are polar 
B)  it has a high specific heat because of the extensive covalent bonds between molecules 
C)  hydrogen atoms in water form a region with a partial positive charge 
D)  water's polarity allows for many ionic compounds to be dissolved in it

Question 5

Polysaccharides

Accepted Answer

A)  include ribose, fuctose and glucose 
B)  include cholesterol and vitamin D 
C)  are monosaccharides joined by glycoside bonds 
D)  are found only in eukaryotic cells 
A)  include ribose, fuctose and glucose 
B)  include cholesterol and vitamin D 
C)  are monosaccharides joined by glycoside bonds 
D)  are found only in eukaryotic cells

Question 6

Which of the following statements about solutions is false?

Accepted Answer

A)  solute is the substance dissolved in a solvent 
B)  left alone on a counter a solution will separate out 
C)  solutes can consist of atoms, ions or molecules 
D)  in cells water is typically a solvent 
A)  solute is the substance dissolved in a solvent 
B)  left alone on a counter a solution will separate out 
C)  solutes can consist of atoms, ions or molecules 
D)  in cells water is typically a solvent

Question 7

The three fundamental particles of the atom are

Accepted Answer

A)  elements, molecules, compounds 
B)  ions, cations, anions. 
C)  proteins, lipids, sugars 
D)  proton, neutron, electron 
A)  elements, molecules, compounds 
B)  ions, cations, anions. 
C)  proteins, lipids, sugars 
D)  proton, neutron, electron

Question 8

Ions with opposite charges are generally held together by

Accepted Answer

A)  covalent bonds 
B)  ionic bonds 
C)  hydrogen bonds 
D)  municipal bonds 
A)  covalent bonds 
B)  ionic bonds 
C)  hydrogen bonds 
D)  municipal bonds

Question 9

Which of the following pH's would indicate the weakest acid

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  5 
A)  2 
B)  3 
C)  4 
D)  5

Question 10

When sodium hydroxide,a strong base,is added to water,the pH of the solution

Accepted Answer

A)  goes up. 
B)  remains the same. 
C)  goes down. 
D)  cannot be determined. 
A)  goes up. 
B)  remains the same. 
C)  goes down. 
D)  cannot be determined.

Question 11

The atomic nucleus consists of:

Accepted Answer

A)  cations and anions 
B)  protons, electrons and neutrons 
C)  protons and neutrons 
D)  solutes and colloids 
A)  cations and anions 
B)  protons, electrons and neutrons 
C)  protons and neutrons 
D)  solutes and colloids

Question 12

Chemical reactions that require energy are best termed

Accepted Answer

A)  catabolic 
B)  anabolic 
C)  exergonic 
D)  endergonic 
A)  catabolic 
B)  anabolic 
C)  exergonic 
D)  endergonic

Question 13

Two or more atoms combine to form

Accepted Answer

A)  a cation. 
B)  a molecule. 
C)  a protein. 
D)  an ion. 
A)  a cation. 
B)  a molecule. 
C)  a protein. 
D)  an ion.

Question 14

Electrons that have more energy have a _______ charge and are found in the _________.

Accepted Answer

A)  positive; inner electron shell 
B)  positive; outer electron shell 
C)  negative; nucleus 
D)  negative; outer electron shell 
A)  positive; inner electron shell 
B)  positive; outer electron shell 
C)  negative; nucleus 
D)  negative; outer electron shell

Question 15

When proteins are made up of several polypeptide chains,the arrangement of these chains is referred to as:

Accepted Answer

A)  primary structure 
B)  secondary structure 
C)  tertiary structure 
D)  quaternary structure 
A)  primary structure 
B)  secondary structure 
C)  tertiary structure 
D)  quaternary structure

Question 16

Chemically stable atoms are inert or less likely to form chemical bonds. What characterizes a chemically stable element?

Accepted Answer

A)  has eight electrons in the outer shell 
B)  has the same number of protons as electrons 
C)  atomic number is equal to the atomic mass 
D)  forms hydrogen bonds 
A)  has eight electrons in the outer shell 
B)  has the same number of protons as electrons 
C)  atomic number is equal to the atomic mass 
D)  forms hydrogen bonds

Question 17

Carbohydrates

Accepted Answer

A)  are relatively insoluble in water 
B)  have a four ring structure 
C)  are used primarily for energy and cellular structures 
D)  have primary, secondary, tertiary and quaternary structure 
A)  are relatively insoluble in water 
B)  have a four ring structure 
C)  are used primarily for energy and cellular structures 
D)  have primary, secondary, tertiary and quaternary structure

Question 18

Ketones,alcohol,aldehyde and organic acid are four of the organic compounds found in all living cells. What do these four classes of organic compounds share?

Accepted Answer

A)  They contain the same atoms but differ in structure 
B)  They are chains of carbon atoms with functional groups that contain oxygen. 
C)  They are all fully oxidized. 
D)  They can only be synthesized inside a cell. 
A)  They contain the same atoms but differ in structure 
B)  They are chains of carbon atoms with functional groups that contain oxygen. 
C)  They are all fully oxidized. 
D)  They can only be synthesized inside a cell.

Exam 2: Fundamentals of Chemistry

The total number of protons in an atom is equal to its

Disaccharides,such as sucrose and lactose,are formed from

Fatty acids that are _________ have ___________ .

Which is a false statement about water?

Polysaccharides

Which of the following statements about solutions is false?

The three fundamental particles of the atom are

Ions with opposite charges are generally held together by

Which of the following pH's would indicate the weakest acid

When sodium hydroxide,a strong base,is added to water,the pH of the solution

The atomic nucleus consists of:

Chemical reactions that require energy are best termed

Two or more atoms combine to form

Electrons that have more energy have a _______ charge and are found in the _________.

When proteins are made up of several polypeptide chains,the arrangement of these chains is referred to as:

Chemically stable atoms are inert or less likely to form chemical bonds. What characterizes a chemically stable element?

Carbohydrates

Ketones,alcohol,aldehyde and organic acid are four of the organic compounds found in all living cells. What do these four classes of organic compounds share?

Scope and History of Microbiology

Microscopy and Staining

Characteristics of Prokaryotic and Eukaryotic Cells

Essential Concepts of Metabolism

Growth and Culturing of Bacteria

Microbial Genetics

Gene Transfer and Genetic Engineering

An Introduction to Taxonomy: the Bacteria

Viruses

Eukaryotic Microorganisms and Parasites

Sterilization and Disinfection

Antimicrobial Therapy

Host-Microbe Relationships and Disease Processes

Epidemiology and Nosocomial Infections

Innate Host Defenses

Immunology I: Basic Principles of Adaptive Immunity and Immunization

Immunolgy Ii: Immunological Disorders and Tests

Diseases of the Skin and Eyes; Wounds and Bites

Urogenital and Sexually Transmitted Diseases

Diseases of the Respiratory System

Oral and Gastrointestinal Diseases

Cardiovascular, lymphatic and Systemic Disease

Diseases of the Nervous System

Environmental Microbiology

Applied Microbiology

Filters

Fatty acids that are _ have ___ .

Electrons that have more energy have a _ charge and are found in the ___.