1-5

Question 1

T/F - Pasteurization is a process that kills all microbes present in the liquid being pasteurized.

Answer 1

False

Question 2

T/F - Rickettsia spp. and Chlamydia spp. cannot be grown on artificial media.

Answer 2

True

Question 3

T/F - All diseases caused by Rickettsia spp. are arthropod borne.

Answer 3

True

Question 4

T/F - Organisms in the genus Vibrio are curved bacilli.

Answer 4

True

Question 5

T/F - A dimorphic fungus would exist as a mould inside the human body.

Answer 5

False

Question 6

T/F - Chitin is found in the cell walls of algae, but is not found in the cell walls of any other types of microorganisms.

Answer 6

False

Question 7

T/F - Microbes probably appeared on earth about 3.5 million years ago.

Answer 7

False

Question 8

T/F - Viruses contain both DNA and RNA.

Answer 8

False

Question 9

T/F - The cell walls of archaea contain a thicker layer of peptidoglycan than bacterial cell walls.

Answer 9

False

Question 10

T/F - Pathogens greatly outnumber nonpathogens.

Answer 10

False

Question 11

T/F - Prions are infectious RNA molecules.

Answer 11

False

Question 12

T/F - Anton Von Leeuwenhoek is given credit for developing the first compound light microscope.

Answer 12

False

Question 13

T/F - Mycoplasmas cannot grow on artificial media.

Answer 13

False

Question 14

T/F - The production of endospores by bacteria is a reproductive mechanism.

Answer 14

False

Question 15

T/F - One way that archaea differ from bacteria is that archaea possess more peptidoglycan in their cell walls.

Answer 15

False

Question 16

T/F - Anton van Leeuwenhoek’s experiments helped to prove that microbes cause disease.

Answer 16

False

Question 17

T/F - Louis Pasteur and Robert Koch made significant contributions to the “germ theory of disease.”

Answer 17

True

Question 18

T/F - The wavelength of visible light limits the size of objects that can be seen with the compound light microscope.

Answer 18

True

Question 19

T/F - Primary syphilis is usually diagnosed in the clinical microbiology laboratory using a scanning electron microscope.

Answer 19

False

Question 20

T/F - Using microbes to clean up the environment is known as bioremediation.

Answer 20

True

Question 21

T/F - Tyndallization is a process that kills spores as well as vegetative cells.

Answer 21

True

Question 22

T/F - All infectious diseases are caused by pathogens.

Answer 22

True

Question 23

T/F - The internal structure of prokaryotic flagella is the same as the internal structure of eukaryotic flagella.

Answer 23

False

Question 24

T/F - Slime moulds possess characteristics of both fungi and protosoa.

Answer 24

True

Question 25

T/F - Classification of fungi is based on the type of conidia that they produce.

Answer 25

False

Question 26

T/F - The internal structure of eukaryotic cilia is the same as the internal structure of eukaryotic flagella.

Answer 26

True

Question 27

T/F - The resolving power of electron microscopes is much better than that of compound light microscopes because the wavelength of electrons is much longer than that of visible light.

Answer 27

False

Question 28

T/F - Protozoa that move by means of pseudopodia are in a category known as amebae.

Answer 28

True

Question 29

T/F - The organism that causes a "red tide" is an alga.

Answer 29

True

Question 30

T/F - Microbes contribute more oxygen to our atmosphere than plants do.

Answer 30

True

Question 31

T/F - A magnifying glass could be considered a simple microscope.

Answer 31

True

Question 32

T/F - The total magnification achieved when the oil-immersion lens is used is x1,000.

Answer 32

True

Question 33

T/F - The Three-Domain System of Classification is based on differences in the structure of transfer RNA (tRNA) molecules.

Answer 33

False

Question 34

T/F - The resolving power of compound light microscopes can be improved by adding additional magnifying lenses.

Answer 34

False

Question 35

T/F - Transmission electron microscopes are used to study surface features.

Answer 35

False

Question 36

T/F - Prokaryotic cells do not contain endoplasmic reticulum, Golgi bodies, mitochondria, plastids, or membrane-bound vesicles.

Answer 36

True

Question 37

T/F - Fungi can cause both infectious diseases and microbial intoxications.

Answer 37

True

Question 38

T/F - Fluorescence microscopy is often used in immunology laboratories.

Answer 38

True

Question 39

T/F - Sexual spores are also known as conidia.

Answer 39

False

Question 40

T/F - Protozoa in the category known as sporozoa move by means of cilia.

Answer 40

False

Question 41

T/F - Tiny marine animals are known as zooplankton.

Answer 41

True

Question 42

T/F - A diatom is a multicellular alga.

Answer 42

False

Question 43

T/F - Viruses are the smallest infectious agents.

Answer 43

False

Question 44

T/F - A brightfield microscope can be converted to a darkfield microscope by replacing the condenser on a brightfield microscope with a darkfield condenser.

Answer 44

True

Question 45

T/F - A stigma is an organelle that pumps water out of the cell.

Answer 45

False

Question 46

T/F - Bacteria never have cilia, and eukaryotic cells never have pili.

Answer 46

True

Question 47

T/F - In eukaryotic cells, ribosomal RNA (rRNA) molecules are manufactured in the nucleolus.

Answer 47

True

Question 48

T/F - HIV is an enveloped, single-stranded RNA virus.

Answer 48

True

Question 49

T/F - On entering a bacterial cell, all bacteriophages immediately initiate the lytic cycle.

Answer 49

False

Question 50

T/F - Microbes are essential in the field of genetic engineering.

Answer 50

True