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Microbiology Unit 3 Review

Total questions: 40

Worksheet time: 23mins

Name
Class
Date
1.
Bacteria and Archaea are classified as?
a)
eukaryotes
b)
nucleoid
c)
prokaryotes
d)
proteins
2.
Prokaryote are?
a)
simple, mostly single-celled organism that lacks a nucleus, or any other membrane-bound organelle.
b)
have a peptidoglycan cell wall and many have polysaccharide capsules.
c)
have a true nucleus, which means the cell's DNA is surrounded by a membrane.
d)
contain membrane-bound organelles, such as the nucleus
3.
Four common components of a cell are?
a)
plasma membrane, cytoplasm, DNA, and ribosomes.
b)
archaea, bacteria, nucleoid, protiens
c)
plants, fungi, protists, and animals
4.
plasma membrane
a)
consisting of a jelly-like cytosol within the cell which other cellular components are found
b)
the genetic material of the cell
c)
an outer covering that seperates the cell's interior from its surrounding environment
d)
synthesize proteins
5.
cytoplasm....
a)
consisting of a jelly-like cytosol within the cell in which other cellular components are found.
b)
an outer covering that seperates the cell's interior from its surrounding environment
c)
the genetic material of the cell
d)
synthesize proteins
6.
DNA
a)
synthesize proteins
b)
the genetic material of the cell
c)
an outer covering that separates the cell's interior from its surrounding environment
d)
consisting of a jelly-like cytosol within the cell in which other cellular components are found
7.
ribosomes
a)
an outer covering that separates the cell's interior from its surrounding environment
b)
the genetic material of the cell
c)
consisting of a jelly-like cytosol within the cell in which other cellular components are found
d)
synthesize proteins
8.
Do most prokaryotic have a peptidoglycan cell wall and many have a polysaccharide capsule?
a)
True
b)
False
9.
What three things does the cell wall act as?
a)
nucleoid, ribosomes, membrane
b)
an exxtra layer of protection, helps the cell maintain its shape, and prevents dehydration.
c)
flagella, pili, fimbriae
d)
pathway, flagella, and prevents dehydration
10.
Eukaryotic cells ar smaller than prokaryotic cells.
a)
True
b)
False
11.
Bacteria lack fimbriae are less likely to?
a)
adhere to cell surfaces
b)
swim through bodily fluids
c)
synthesize proteins
d)
retain the ability to divide
12.
Pili
a)
Used to attach to a host cell by bacteria.
b)
Used to exchange genetic material during conjugation in prokaryotes.
c)
Used for locomotion in prokaryotes.
d)
this structure acts as an extra layer of protection, helps the cell maintain it's shape, and prevents dehydration.
13.

Flagellar motor is anchored to

a)

cell wall

b)

cell membrane

c)

both

d)

Capsule, cell wall & cell membrane

14.

This image depicts what flagellar arrangement?

a)

lophotrichous

b)

amphitrichous

c)

polar monotrichous

d)

peritrichous

e)

amphilophotrichous

15.
What type of organism is found in extreme environments
a)
Hot Springs
b)
Bacteria
c)
Viruses
d)
Archaea
16.

Bacteria contain circular chromosomes called

a)

Ribosomes

b)

Coccus

c)

Plasmids

d)

Nucleus

17.

The two types of appendages for movement are called..

a)

Coccus and bacillus

b)

Flagella and pili

c)

Spirillum and pili

d)

Flagella and bacillus

18.

Coccus shaped bacteria are

a)

rod-shaped

b)

spherical

c)

spiral

19.

During conjugation, 2 bacteria are held together by their

a)

Flaglla

b)

Pili

20.

Endospores are really easy to destroy.

a)

True

b)

False

21.
Name this bacteria shape
a)
bacillus
b)
coccus
c)
spirillum
22.
Name this bacteria shape
a)
coccus
b)
bacillus
c)
spirillum
23.

Strong outer layer that protects the bacterial cell from infection by viruses and attack from immune cells.

a)

Pilli

b)

Cell wall

c)

Capsule

d)

Flagella

24.

Layer outside the cell membrane that gives the bacterial cell a solid shape.

a)

Cytoplasm

b)

Cell wall

c)

Plasma membrane

d)

Pilli

25.

Whip-like tail that allows bacteria to move

a)

Pillus

b)

Flagella

c)

Cytoplasm

d)

Cell wall

26.

Small protrusions of cell membrane around the outside of the bacterial cell that allow bacteria to attach to one another, and share DNA.

a)

Flagella

b)

Cell membrane

c)

Pilli

d)

Cell wall

27.

Is the bacterial DNA surrounded by a nucleus?

a)

No

b)

Yes

28.

Small circular pieces of DNA that can be shared between bacteria.

a)

Cytoplasm

b)

Plasmid DNA

c)

Chromosome

d)

Ribosome

29.

The bacterial envelope includes

a)

All the layers around a cell

b)

The plasma membrane only

c)

Only the cell wall and the cell membrane

d)

The capsule only

30.

This part of a prokaryotic cell is a slime layer that helps the cell stick to things.

a)

Cell Wall

b)

Capsule

c)

Plasma Membrane

d)

Nucleus

31.

The membrane bound food and other items are called

a)

Vacoles

b)

Inclusions

c)

Granules

d)

Storehouse

32.

Fimbrea

a)

Help in locomotion

b)

Help in conjugation

c)

Help in reproduction

d)

Help in sticking to surfaces

33.

Why are cells with capsules harder to get rid of?

a)

The cells are so sticky you can't unstick them

b)

The cell's capsule prevents the immune system from eating them

c)

The immune system becomes buddies with them

d)

The capsule makes the cell invisible

34.

What molecule on the outer membrane is dangerous to humans?

a)

Phospholipid

b)

Capsule

c)

Lipopolysaccharide

d)

Pepdidoglycan

35.

Bacteria that are metabolically active

a)

Vegetative cells

b)

Spores

36.

Bacteria that are highly resistant and metabolically inactive

a)

Vegetative cells

b)

Spores

37.

Bacterial spores are resistant to damage by which of the following?

a)

Heat

b)

Freezing

c)

Radiation

d)

Chemicals and stains

e)

All answers are correct

38.

Process of a free spore reverting back into a vegetative cell

a)

Sporogenesis

b)

Reproduction

c)

Germination

d)

Vegetation

39.

The primary stain used during spore staining that stains the spore and not the vegetative cell

a)

Water

b)

Malachite Green

c)

Safranin

d)

Crystal Violet

40.

What is one component that makes the endospore resistant?

a)

It contains calcium

b)

It contains bones

c)

It contains a super cell wall

d)

It doesn't help

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