Test 1

Question 1

The microbes commonly knows as ______ are single-celled eukaryotes that are generally motile.

Answer 1

Protozoa

Question 2

The microbial production of alcohol from sugar is known as

Answer 2

Fermentation

Question 3

The study of the body’s defense against pathogens is called?

Answer 3

Immunology

Question 4

Scientist that first develop a taxonomic system for classifying organisms.

Answer 4

Linnaeus

Question 5

The work of Lister, Nightingale, and Semmelweis all contributed to controlling infectious disease by

Answer 5

Developing methods for reducing nosocomial infections

Question 6

Using a microscope, you observe an amoeba moving toward a food source. This is an example of

Answer 6

Responsiveness

Question 7

Not a component of bacterial flagella

Answer 7

Tubulin

Question 8

Plays an important role in the creation of biofilms

Answer 8

Fimbriae and glycocalyces

Question 9

Short hairlike structures used only by eukaryote cells for movement are called

Answer 9

pseudopodia

Question 10

A bacterial cell moving toward light would be an example of

Answer 10

Positive photoaxis

Question 11

Lipid A is also known as

Answer 11

Endotoxin

Question 12

Bacteria of the genus Mycoplasma are distinguished from other bacterial cells by

Answer 12

The absence of a cell wall

Question 13

Lipid-Soluble molecules would be expected to cross the cytoplasmic membrane by which of the following proceceses?

Answer 13

Diffusion

Question 14

ATP is expended in which of the following processes

Answer 14

Group Translocation

Question 15

The glycocalyx of a eukaryotic cell performs all of the following functions except

Answer 15

protection against dehydration

Question 16

What is unique to Archea?

Answer 16

Hami

Question 17

When cells are placed in a hypertonic solution, they lose water and shrivel. This process is called

Answer 17

Crenation

Question 18

Is classified as membranous organelle of eukayotic cells?

Answer 18

Endoplasmic Reticulum

Question 19

It requires a carrier protein

Answer 19

Facilitated diffusion and Active Transport

Question 20

Chemical substances that contributes to the unique characteristics of acid-fast bacteria

Answer 20

Mycolic Acid

Question 21

The ability of a lens to gather light is called

Answer 21

Numerical Aperture

Question 22

is(are) (a) magnifying lens(es)?

Answer 22

Objective and Ocular

Question 23

Why does immersion oil improves resolution?

Answer 23

It increases numerical aperture and maintains uniform light speed

Question 24

If you were trying to visualize flagella without staining, which of the following microscope would you use/.

Answer 24

Phase contrast

Question 25

If a microbiology lab technician left the safranin out of the Gram stain procedure, what would be the result?

Answer 25

Gram positive cells would be purple and gram negative cells would be colorless

Question 26

A patient suffering from tuberculosis could be diagnose by use of the _____ stain

Answer 26

Acid-Fast

Question 27

Carl Woese proposed the concept of the domain based on differences of which of the following cellular molecules

Answer 27

Ribosomal RNA

Question 28

Which category of microbe is NOT incleded in Whittaker's taxonomic scheme

Answer 28

Viruses

Question 29

Why have some microbiologists proposed using ribosomal RNA as the basis of defining becterial species.

Answer 29

Bacteria are not interbreeding populations, and ribosomal RNA's are highly conserved genes present in all prokaryotes.

Question 30

Which of the following phenomena produces magnification

Answer 30

The refraction of radiation as it passes through a lense

Question 31

A virologist wants to observe the surface features if virus particles she is studying what kind of microscope she shouldn't use?

Answer 31

differential interference contrast

Question 32

which of the following statements about transmission electron microscopy is FALSE?

Answer 32

Glass Lenses are used

Question 33

A cell that uses organic carbon source and obtains energy from light would be called a

Answer 33

Photoheterotroph

Question 34

A(n) _______ organism is one that requires oxygen for growth.

Answer 34

Obligate

Question 35

A microbe that grows only at the bottom of a tube of thioglycollate medium is probably a(n)

Answer 35

Obligate anaerobe

Question 36

At temperature higher than the maximum growth temperature for an organism.

Answer 36

Hydrogen bonds are broken, proteins are denatured, and membranes become too

Question 37

MacConkey agar plates represent ____ medium

Answer 37

a Differential

Question 38

During which growth phase are bacteria more susceptible to antimicrobial drugs?

Answer 38

log phase

Question 39

The use of salt and sugar in preserving various types of foods is an application of which of the following concepts?

Answer 39

Osmotic Pressure

Question 40

Microbes that move by means of clia are

Answer 40

Protozoa

Question 41

A cell that contains a nucleus is called a(n) ______ cell

Answer 41

Eukaryotic Cell

Question 42

In a(n) _______ solution, an animal cell can gain so much water that it may burst

Answer 42

Hypotonic

Question 43

A(n) _____ is a type of glycocalyx that is firmly attached to the cell

Answer 43

Capsule