Chapter 1 Worksheet

Question 1

T/F Bacterial cell walls are composed of cellulose.

Answer 1

False, Cellulose is found in
plants’ cell wall, bacteria cell wall is made of peptidoglycan

Question 2

T/F All bacteria cells have cell walls.

Answer 2

False, Mycoplasma does not have cell
wall

Question 3

T/F Bacteria and Archaea are prokaryotic and unicellular.

Answer 3

True

Question 4

T/F Archaea cell walls are made of peptidoglycan

Answer 4

False, No just peptidoglycan
it also contains other chemicals

Question 5

T/F Bacteria and archaea reproduce asexually.

Answer 5

True

Question 6

T/F Archaea are known to cause diseases in humans.

Answer 6

False, Humans do not offer
the extreme environment required by Archaea

Question 7

T/F Bacteria are known to cause disease in humans.

Answer 7

True

Question 8

T/F Bacteria are often found in extreme environments whereas
archaea are found everywhere.

Answer 8

False, Bacteria found everywhere; Archaea in
extreme environments

Question 9

T/F All bacteria can cause disease in humans.

Answer 9

False, Not all cause disease

Question 10

T/F Bacteria can degrade dead plants and animals (microbial
recyclers); and without bacteria our bodies would be much more
susceptible to disease.

Answer 10

True

Question 11

T/F Fungi are eukaryotic cells.

Answer 11

True

Question 12

T/F Fungi can degrade dead plants and animals (microbial
recyclers).

Answer 12

True

Question 13

T/F Fungi like plants can make their own food (photosynthetic).

Answer 13

False, Fungi are not photosynthetic; plants, algae and protists are photosynthetic

Question 14

T/F Microscopic fungi include some molds and yeast

Answer 14

True

Question 15

T/F Molds are multicellular, and yeast are unicellular.

Answer 15

True

Question 16

T/F Fungi are known to cause disease.

Answer 16

True

Question 17

T/F All fungi can cause disease in humans.

Answer 17

False, Not all cause disease

Question 18

T/F Fungi have cell walls.

Answer 18

True

Question 19

T/F Fungi cells walls is made of cellulose.

Answer 19

False, their cell wall is made out
of chitin.

Question 20

T/F Protozoa like bacteria are prokaryotic unicellular organisms

Answer 20

False, Protists are eukaryotic unicellular organisms

Question 21

T/F Most protozoa live in water, but some live inside animal host

Answer 21

True

Question 22

T/F Euglena, amoeba, and paramecium are examples of protozoa.

Answer 22

True

Question 23

T/F Protozoa can be categorized according to their locomotive
structures

Answer 23

True

Question 24

T/F Euglena has flagella, paramecium has pseudopods and amoeba
has cilia.

Answer 24

False, paramecium has cilia and amoeba pseudopods

Question 25

T/F Protozoa can cause disease in humans.

Answer 25

True

Question 26

T/F Protozoa have cells walls made of peptidoglycan.

Answer 26

False, Protozoa does not have cell wall. They can survive in fresh water or hypotonic environments due to the presence of the contractile vacuole

Question 27

T/F Algae are unicellular or multicellular photosynthetic eukaryotes

Answer 27

True

Question 28

T/F Large algae like seaweeds and kelps are common in the oceans

Answer 28

True

Question 29

T/F Scientists use the algae-derived chemical called agar to solidify laboratory media.

Answer 29

True

Question 30

T/F Unicellular algae provide most of the world’s oxygen as a by-product of photosynthesis

Answer 30

True

Question 31

T/F Algae can cause human diseases

Answer 31

False, algae cannot cause human diseases

Question 32

T/F Parasitic worms are the largest organisms studied by Microbiologists are often visible without a microscope, although their immature stages are microscopic

Answer 32

True

Question 33

T/F Laboratory scientists diagnose infections of parasitic worms by finding macroscopic eggs and immature stages in blood, fecal, urine, and lymph nodes

Answer 33

False, not macroscopic eggs instead microscopic eggs

Question 34

T/F Parasitic worms can cause human diseases

Answer 34

True

Question 35

T/F (Virus) Typically, much smaller than prokaryotes and not visible by light microscopy.

Answer 35

True

Question 36

T/F Viruses are the smallest microbes studied by microbiologists.

Answer 36

True

Question 37

T/F (Virus) Only can be seen under the electron microscope.

Answer 37

True

Question 38

T/F Viruses are obligate intracellular parasites.

Answer 38

True

Question 39

T/F Viruses are made of cells

Answer 39

False, they are acellular – no cells

Question 40

T/F Viruses can cause human diseases.

Answer 40

True