Question 1

A scientist studying the sequence of nucleotides in the rRNA
of a bacterial species is working on

Select one:

a. Determining
evolutionary relatedness

b. Bioremediation

c. Recombinant DNA

d. Nomenclature

e. Determining if
that species is the cause of a new disease

Question 2

Which of the following controls the amount of light entering
the specimen?

Select one:

a. Objective lens

b. Ocular lens

c. Condenser

d. Body

e. Iris
diaphragm

Question 3

Characteristics of shared by all cells include:

Select one:

a. a membrane serving
as a cell boundary

b. the possession of
genetic information

c. the presence of
cellular fluid

d. All of these

Question 4

Glycolysis

Select one:

a. Uses 2 ATP,
produces 2 ATP and requires oxygen

b. Uses 2 ATP,
produces 4 ATP and requires oxygen

c. Uses 2 ATP,
produces 4 ATP, without oxygen

d. Uses 2 ATP,
produces 2 ATP, without oxygen

e. None of the
choices are correct

Question 5

Which of the following will not support viral cultivation?

Select one:

a. Live lab animals

b. Embryonated bird
eggs

c. Primary cell
cultures

d. Continuous cell
cultures

e. All of the choices
will support viral cultivation

Question 6

The smallest and most significant taxon is

Select one:

a. Genus

b. Species

c. Kingdom

d. Family

e. Phylum

Question 7

Which of the following is not true of the cytoskeleton?

Select one:

a. Structural
framework for the cell

b. Anchor points for
organelles

c. Made up of
microfilaments

d. Made up of
microtubules

e. Made up of
cilia

Question 8

Which of the following is not a function of a prokaryote
cell membrane?

Select one:

a. Transport

b. Secretion

c. Cellular
respiration

d. Macromolecule
synthesis

e. Antigens and
receptors

Question 9

Ionic compounds are

Select one:

a. Hydrophobic

b. Hydrophilic

c. Are acidic in
solution

d. Are basic in
solution

e. Always form salts
in solution

Question 10

Which of the following is mismatched?

Select one:

a. Methanogens –
convert CO2 and H2 gases into methane

b. Extreme halophiles
– adapted to salty habitats

c. Psychrophiles –
adapted to very low temperatures

d. Hyperthermophiles
– adapted to high temperatures

e. Thermo plasmas –
adapted to frozen environments

Question 11

The study of the immune response to infection caused by
microorganisms is

Select one:

a. Hypersensitivity

b. Epidemiology

c. Immunology

d. Morbidity

e. Geomicrobiology

Question 12

The difference in cell wall structure of Mycobacterium and
Nocardia compared to the typical gram positive bacterial cell wall structure is

Select one:

a. More peptidoglycan

b. Predominance of
unique, waxy, lipids

c. Easily decolorized

d. Presence of
lipopolysaccharide

e. All of the choices
are correct

Question 13

A student forgot to label a beaker containing a DNA solution
and a beaker containing a glucose solution. If chemical analysis was performed
to identify the contents of each beaker, which of the following would be found
in the beaker of DNA but not in the beaker with glucose?

Select one:

a. Amino acids

b. Hydrogen and
oxygen atoms

c. Nitrogen and
phosphorus

d. Fatty acids

e. Carbon atoms

Question 14

Oncogenic viruses include all the following except

Select one:

a. Hepatitis B virus

b. Measles virus

c. Papillomavirus

d. HTLVI and HTLVII
viruses

e. Epstein-Barr virus

Question 15

Fungal asexual spores

Select one:

a. Are only produced
under harmful environmental conditions

b. Are only asexually
produced

c. Cannot be seen in
a light microscope

d. Are the products
of meiotic division by a single parent cell

e. Are used to
identify fungi

Question 16

An organism that grows slowly in the cold but has an optimum
growth temperature of 32° C is called a/an

Select one:

a. Extremophile

b. Thermophile

c. Psychrophile

d. Facultative
psychrophile

e. Thermoduric

Question 17

Reverse transcriptase synthesizes

Select one:

a. The positive RNA
strand from a negative RNA strand

b. A negative RNA
strand from a positive RNA strand

c. Viral RNA from DNA

d. Viral DNA from RNA

e. None of the
choices are correct

Question 18

In addition to electrons, which of the following is also
involved in electron transfer?

Select one:

a. ADP

b. Glucose

c. Carbon

d. Hydrogen

e. Carbon dioxide

Question 19

Which of the following functional groups is mismatched to
the organic compound?

Select one:

a.
Phosphate-carbohydrates

b.
Sulfhydryl-proteins

c. Amino-proteins

d. Hydroxyl-alcohols

e. Carboxyl-fatty
acids

Question 20

A sequence of bases on a gene that does not code for protein
is called a/an

Select one:

a. Promoter

b. Operator

c. Operon

d. Exon

e. Intron

Question 21

An important indicator of evolutionary relatedness is to
determine

Select one:

a. Size of the
periplasmic space

b. Similarities of
cell membrane proteins

c. Size of the
bacterial chromosome

d. Nitrogen base
sequence of rRNA

e. Size of the
ribosomes

Question 22

Which type of microscope is the most widely used and shows
cells against a bright background?

Select one:

a. Bright-field

b. Dark-field

c. Phase-contrast

d. Fluorescence

e. Electron

Question 23

Which is incorrect about inducible operons?

Select one:

a. Have genes turned
off by a buildup of end product

b. Are often for
catabolic pathways

c. Are normally
turned off

d. Are turned on by
the substrate of the enzyme

e. Include the lac
operon

Question 24

Enzymes are

Select one:

a. Broken down in
reactions that require energy input

b. Proteins that
function as catalysts

c. Used up in
chemical reactions

d. Not needed for
catabolic reactions

e. All of the choices
are correct

Question 25

Contractile vacuoles are

Select one:

a. Used to expel
excess water from cells

b. Found in bacterial
cells

c. Important to
certain organisms in hypertonic environments

d. Protein carriers
in cell membranes

e. Used to bring
solutes into a cell

Question 26

Which of the following magnifies the specimen to produce the
virtual image of the specimen?

Select one:

a. Objective lens

b. Ocular lens

c. Condenser

d. Body

e. Iris diaphragm

Question 27

The correct microbiological term for the tiny sample of
specimen that is put ino a nutrient medium in order to produce a culture is the

Select one:

a. Colony

b. Inoculum

c. Streak

d. Loop

e. None of the
choices are correct

Question 28

The enzymes that can proofread replicating DNA, detect
incorrect bases, excise them and correctly replace them are

Select one:

a. DNA ligases

b. DNA
polymerases

c. DNA helicases

d. DNA gyrases

e. Primases

Question 29

An organelle that is a stack of flattened, membranous sacs
and functions to receive, modify and package proteins for cell secretion is the

Select one:

a. Mitochondria

b. Lysosomes

c. Golgi
apparatus

d. Chloroplasts

e. Endoplasmic
reticulum

Question 30

A frame shift is caused by ______ mutations?

Select one:

a. Missense and
insertion

b. Missense and
nonsense

c. Nonsense and
deletion

d. Deletion and
insertion

e. Insertion and
nonsense

Question 31

Viruses that infect bacteria are specifically called

Select one:

a. Viroids

b. Prions

c.
Bacteriophages

d. Satellite viruses

e. All of the choices
infect bacteria

Question 32

Which of the following is a taxon that contains all the
other taxa listed?

Select one:

a. Species

b. Phylum

c. Kingdom

d. Genus

e. Family

Question 33

Human pathogens fall into the group

Select one:

a. Psychrophiles

b. Thermophiles

c. Halophiles

d. Mesophiles

e. Acidophiles

Question 34

What is the term for a culture made from one isolated
colony?

Select one:

a. Axenic

b. Mixed

c. Pure

d. Both axenic and
mixed

e. Both axenic and
pure

Question 35

Traditional approaches to taxonomy involved observation of
visible morphological characteristics. Today, however, new molecular methods
include the examination of:

Select one:

a. DNA

b. rRNA

c. proteins

d. All of these

Question 36

The woven, intertwining mass of hyphae that makes up the
body of a mold is a/an

Select one:

a. Septum

b. Rhizoid

c. Spore

d. Bud

e. Mycelium

Question 37

An irregular cluster of spherical cells would be called a/an

Select one:

a. Palisades

b. Sarcina

c.
Staphylococcus

d. Streptococcus

e. Spirilla

Question 38

The production of antibodies is a form of antagonism called

Select one:

a. Symbiosis

b. Satellitism

c. Antibiosis

d. Mutualism

e. Synergism

Question 39

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

Select one:

a. 2

b. 4

c. 8

d. 18

e. 32

Question 40

Enzymes that catalyze moving a phosphate from one substrate
to another are called

Select one:

a.
Phosphotransferases

b. Oxidoreductases

c. Decarboxylases

d. Aminotransferases

e. Ligases