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Unit 2 Review

Total questions: 109

Worksheet time: 2hrs 57mins

Name
Class
Date
1.

How are eukaryotic cells different from prokaryotic cells?

a)

Eukaryotic cells have nuclei; prokaryotic cells don't

b)

Eukaryotic cells are microscopic; prokaryotic cells are not

c)

Eukaryotic cells contain genetic material; prokaryotic cells don't

d)

Eukaryotic cells include bacteria; prokaryotic cells don't Prokaryotic

2.

Tiny structures that produce proteins inside bacteria

a)

bacteria

b)

ribosomes

c)

cytoplasm

d)

endospore

3.

Bacteria are....(select all that apply)

a)

Single-celled organisms

b)

Multi-cellular organisms

c)

Eukaryotes

d)

Prokaryotes

4.
Prokaryotic and eukaryotic cells have many differences, but they also share some common features.  Which of the following may be found in either type of cell?
a)
Golgi bodies
b)
ribosomes
c)
mitochondria
d)
nucleus
5.
If a cell contains a cell membrane, a cell wall, and ribosomes, what kind of cell could it be?
a)
either a eukaryotic or a prokaryotic cell
b)
a prokaryotic cell only
c)
an eukaryotic cell only
d)
neither a eukaryotic nor a prokaryotic cell
6.

What type of ribosomes are used by prokaryotes?

(a)  

7.

Which term is used to describe a rod-shaped bacterium?

a)

coccus

b)

spirillum

c)

bacillus

d)

streptococcus

8.

Identify the shape and arrangement of this bacterium.

a)

coccus - single

b)

bacillus - single

c)

diplo coccus

d)

spirriulium

9.

Identify the shape and arrangement of this bacterium.

a)

single bacillus

b)

single spirrillium

c)

strepto bacillius

d)

strepto coccus

10.

What shape are these bacteria?

a)

cocci

b)

bacilli

c)

spirilla

d)

fusilli

11.

What shape are these bacteria?

a)

cocci

b)

bacilli

c)

spirilla

d)

tortellini

12.
The bacteria seen in the picture is
a)
bacillus
b)
cocci
c)
spirilla
13.

Where do bacteria store their DNA?

a)

Nucleus

b)

Nucleoid Region

c)

Mitochondria

d)

Chloroplast

14.

The cell wall can be found in (select all that apply)

a)

Prokaryotic Cells

b)

Plant Cells

c)

Animal Cells

d)

Fungi Cells

e)

Some Protists

15.
Eukaryotic cells have...
a)

70S ribosomes (simple)

b)

80S ribosomes (complex)

16.
Prokaryotic cell walls are composed of ______.
a)
Cellulose
b)
Peptidoglycan
c)
Either cellulose or peptidogylcan
d)
Neither of these
17.

Thick peptidoglycan in cell wall

a)

Gram positive bacteria

b)

Gram negative bacteria

18.

Thin peptidoglycan in cell wall

a)

Gram positive bacteria

b)

Gram negative bacteria

19.

Has an outer membrane (2nd cell membrane)

a)

Gram positive bacteria

b)

Gram negative bacteria

20.

What is the plant cell wall made from?

(a)  

21.

What is the fungal cell wall made from?

(a)  

22.
Which is true of prokaryotic and eukaryotic cells?
a)
Prokaryotic cells are larger than eukaryotic cells.
b)
Eukaryotic cells do not have nuclei, and prokaryotic cells do have nuclei.
c)
Prokaryotic cells lack membrane-bound organelles, and eukaryotic cells contain membrane-bound organelles.
d)
Eukaryotic cells are simpler than prokaryotic cells.
23.
Commensalism is where one organism is benefiting and the other organism is _____________________. 
a)
not effected
b)
helped
c)
harmed
d)
hurt
24.
Which is an example of commensalism?
a)
Two different kinds of organisms harming each other. 
b)
Two different kinds of organisms are neither helping nor harming each other. 
c)
One kind of organism is being helped, but the other one is not harmed or helped. 
d)
One kind of organism is being helped, but the other is harmed. 
25.

A relationship between two organisms in which both organisms benefit

a)

Mutualism

b)

Competition

c)

Parasitsm

d)

Commensalism

26.

Hookworms can enter the body of animals or even humans. The hookworm attaches to the lining of the intestinal wall and feeds on blood. Its eggs are ejected into the digestive tract and the larvae (young hookworms) that hatch live off of the host’s blood. The host can suffer from blood loss, anemia and iron deficiency.

a)

commensalism

b)

mutualism

c)

parasitism

d)

predation

27.

A relationship between 2 organisms in which one organism benefits and the other is harmed

a)

commensalism

b)

parasitism

c)

mutualism

d)

predation

28.

Hummingbirds feed on nectar from flowers. The flowers are pollinated by hummingbirds as they move from flower to flower.

a)

commensalism

b)

mutualism

c)

parasitism

d)

predation

29.
Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.
a)
mutualism
b)
commensalism
c)
competition
d)
parasitism
30.

Skunks often live in burrows that have been dug and abandoned by woodchucks.

a)

commensalism

b)

mutualism

c)

parasitism

d)

predation

31.

Red-billed oxpeckers are birds that often feed on parasites that infest impala. This is an example of ....

a)

commensalism

b)

mutualism

c)

paratisism

d)

predation

32.

Which symbols best describe parasitism?

a)

+,+

b)

+,-

c)

+,0

d)

-,0

33.

This organism is unicellular, an photosynthetic autotroph, has a nucleus, and some of them can be heterotrophic. What is the classification of this organism?

a)

Bacteria

b)

Fungi

c)

Viruses

d)

Protists

34.

Fungi digest their food....

a)

with the assistance of microbes

b)

externally by excreting digestive enzymes and then absorbing the nutrients

c)

by engulfing the food source

d)

internally by producing digestive enzymes within an organelle or organ and absorbing the nutrients

35.

Which of the following is not a cell but can reproduce within a living cell?

a)

bacteria

b)

virus

c)

alga

d)

yeast

36.

What is special about viruses and their host cell

a)

viruses can attach to any type of cell

b)

viruses are bigger than their host cells

c)

viruses are living things

d)

viruses can only attach to specific host cells

37.
Which symbols best describe mutualism?
a)
+,+
b)
+,-
c)
+,0
d)
-,0
38.

In this interaction, one species is harmed, whereas the other species is neither harmed nor benefitted

a)

commensalism

b)

Parasitism

c)

Amensalism

39.

Which of the following is likely NOT found living on or in humans as part of a microbiome?

a)

bacteria

b)

fungi

c)

microscopic animals

d)

microscopic plants

40.
The microbes in a particular environment including the body or part of the body are called...
a)
Bacteria
b)
Viruses
c)
Microbiome
d)
Cooties
41.

What happens to the microbiome from birth to early adulthood

a)

It becomes less diverse

b)

It becomes more diverse

c)

There is no change

42.

What is the role of the microbiome in human health?

a)

It helps in digestion and nutrient absorption

b)

It regulates the immune system

c)

It synthesizes vitamins and minerals

d)

All of the above

43.

What is the name of the phylum of gram-negative bacteria?

a)

Protibacteria

b)

Protobacteria

c)

Proteobacteria

d)

Proteonbacteria

44.

What class of proteobacteria that are oligotrophs, an organisms capable of living in low-nutrient environments such as deep oceanic sediments, glacial ice, or deep undersurface soil?

a)

Alphaproteobacteria

b)

Gammaproteobacteria

c)

Betaproteobacteria

d)

Deltaproteobacteria

45.

What class of proteobacteria which survive on a minimal amount of nutrients and also are eutrophs?  

a)

Alphaproteobacteria

b)

Gammaproteobacteria

c)

Betaproteobacteria

d)

Deltaproteobacteria

46.

What class of proteobacteria is the most diverse class of gram-negative bacteria and it includes a number of human pathogens?

a)

Alphaproteobacteria

b)

Gammaproteobacteria

c)

Betaproteobacteria

d)

Deltaproteobacteria

47.

What class of proteobacteria that has a small class of gram-negative Proteobacteria that includes sulfate-reducing bacteria?

a)

Alphaproteobacteria

b)

Gammaproteobacteria

c)

Betaproteobacteria

d)

Deltaproteobacteria

48.

What is the smallest class of proteobacteria which are gram-negative microaerophilic bacteria?

a)

Alphaproteobacteria

b)

Epsilonproteobacteria

c)

Betaproteobacteria

d)

Deltaproteobacteria

49.

What class of proteobacteria that genus Bordetella belong?

a)

Alphaproteobacteria

b)

Epsilonproteobacteria

c)

Betaproteobacteria

d)

Deltaproteobacteria

50.

What class of proteobacteria that genus Helicobacter belong?

a)

Alphaproteobacteria

b)

Epsilonproteobacteria

c)

Betaproteobacteria

d)

Deltaproteobacteria

51.

Which of the following bacterial phyla is known for having a high cytosine and guanine content in their DNA?

a)

Firmacutes

b)

Actinobacteria

c)

Nonproteobacteria

d)

Alphaproteobacteria

52.

How many Svedberg units is the prokaryotic ribosome?

a)

70S

b)

80S

c)

50S

d)

30S

53.

What is the cell wall of prokaryotes composed of?

a)

Lipopolysaccharides

b)

Glycogen

c)

Starch

d)

Peptidoglycan

54.

Which of the following bacteria are CFBs? Select all that apply

a)

Clostridium

b)

Fusobacterium

c)

Bacteroides

d)

Bacillus

e)

Cytophaga

55.

What traits describe CFBs?

a)

Gram +

b)

Gram -

c)

Live in anaerobic environments

d)

Live in aerobic environments

56.

Cyanobacteria are

a)

Photoheterotrophs

b)

Photoautotrophs

c)

Chemoautotrophs

d)

Chemoheterotrophs

57.

High G+C and Low G+C bacteria are both Gram

(a)  

58.

Which domain has organisms that live in harsh environments?

a)

Bacteria

b)

Archaea

c)

Both

59.

Which domain has DNA with no histone proteins?

a)

Bacteria

b)

Archaea

c)

Eukarya

60.

Which of the following statements is not true?

a)

Archaea and bacteria have different membrane lipids.

b)

Both archaea and bacteria generally lack membrane-enclosed organelles

c)

The cell walls of archaea lack peptidoglycan

d)

Only bacteria have histones associated with DNA.

61.

Which of the following makes archaea different from bacteria?

a)

absence of peptidoglycan

b)

two chromosomes

c)

existence of organelles

d)

aerobic

62.

Archaean cell membranes have (a)   linkages.

63.
All protists are __________________________.
a)
Prokaryotic
b)
Eukaryotic
c)
Unicellular
d)
Multicellular
64.
Why is Kingdom Protista known as the "Junk Drawer Kingdom?"
a)
The kingdom contains a wide variety of organisms.
b)
Protists are more unusual than organisms in other kingdoms.
c)
The kingdom contains organisms that do not meet the characteristics of living things.
d)
Protists are prokaryotic, but also multicellular.
65.

In this supergroup, many species lack plastids, have reduced mitochondria because they live in anaerobic environments, and have unique flagella.

a)

SAR

b)

Excavata

c)

Archaeplastida

d)

Unikonta

66.
What structure do amoebas have to help them move through their watery environment?
a)
Cilia
b)
Flagella
c)
Pseudopod
d)
Hair-like
67.
A collective mass of hyphae are referred to as ------------
a)
Parasitic
b)
Fruiting
c)
Mycelium
d)
Spores
68.
Which of the following protists move using "false feet", also known as pseudopods?
a)
Amoebas
b)
Paramecium
c)
Euglena
d)
Slime Molds
69.
Kingdom Fungi is considered a ___ group of organisms.
a)
prokaryotic
b)
eukaryotic
70.
_____ is a unicellular fungi.
a)
Yeast
b)
A mushroom
c)
Mold
71.
Which protist is this?
a)
Amoeba
b)
Euglena
c)
Water mold
d)
Paramecium
72.
What are Protists?
a)
Mainly single-celled organisms that have a nucleus
b)
Plant-like organisms
c)
Organisms that lack a nucleus
d)
Decomposers that must find their own food
73.

Plasmodium, a protist parasite causing malaria, is classified in the phylum

a)

Ciliophora

b)

Apicomplexa

c)

Rhizopoda

d)

Euglenophyta

74.

Apicomplexans are known for what? Select all that apply

a)

Absorbing food with a pseudopod

b)

Living inside of a host cell

c)

Having a collection of organelles bundled towards one end of the cell

d)

Having more or more flagella to aid in traveling through a host

75.

Excavata are known for what? Select all that apply

a)

Absorbing food with a pseudopod

b)

Living inside of a host cell

c)

Having a collection of organelles bundled towards one end of the cell

d)

Having more or more flagella to aid in traveling through a host

76.

Identify the protist.

a)

Nematode

b)

Apicomplexan

c)

Excavata

d)
Amoeba
77.

Identify the protist.

a)

Nematode

b)

Apicomplexan

c)

Excavata

d)
Amoeba
78.

Identify the protist.

a)

Nematode

b)

Apicomplexan

c)

Excavata

d)
Amoeba
79.

Parasitic worms that cause infection

a)

protozoa

b)

prions

c)

fungi

d)

helminths

80.

In general, how are helminth infections transmitted?

a)

arthropod vectors

b)

healthcare acquired infections

c)

inhalation of spores

d)

ingestion of eggs

81.

In general, how are helminth infections diagnosed?

a)

serum samples

b)

presence of eggs in feces

c)

appearance of rash

d)

biochemical tests

82.

Nematodes are long and thin (a)   worms

83.

Cestodes are large (a)   worms

84.

Identify the worm pictured

a)

Nematode

b)

Trematode

c)

Cestode

d)

Apicomplexan

85.

Identify the worm pictured

a)

Nematode

b)

Trematode

c)

Cestode

d)

Apicomplexan

86.

Identify the worm pictured

a)

Nematode

b)

Trematode

c)

Cestode

d)

Apicomplexan

87.

Fungi's cell wall is made of

(a)  

88.

What unique chemical is found in fungal cell membranes?

(a)  

89.

These are obligate intracellular parasites that lack mitochondria.

a)

Apicomplexa

b)

ciliates

c)

dinoflagellates

d)

Microsporidia

90.

Which of the following are the identifying characteristics of a dinoflagellate?

a)

Unicellular, cilia, nucleus

b)

Unicellular, two flagella, cellulose plates

c)

Unicellular, multiple flagella

d)

Multicellular, nucleus, cell wall

91.
What feature do viruses have in common with animal cells?
a)
ability to form proteins at the ribosomes
b)
existence of lipids in cell membranes
c)
presence of genetic code in nucleic acid
d)
production of energy by a mitochondrion
92.
The purpose of the protein coat surrounding a virus, other than to protect the virus, is to-
a)
react with the cell wall of the host cell
b)
release hereditary information into the host cell
c)
produce proteins within the host cell
d)
destroy the nucleus of the host cell
93.
A virus acts like a...
a)
leukocyte
b)
parasite
c)
parachute
d)
paramedic
94.

Genetic material found in virus

a)

DNA

b)

RNA

c)

BOTH

d)

NON OF THE ABOVE

95.

Viruses have a protein shell called a

(a)  

96.

A structural component that is found in ALL virions is:

a)

Tail fibers

b)

Capsid

c)

DNA

d)

envelope

97.

A lipid membrane which surrounds some virions is a(n)

a)

envelope

b)

capsid

c)

nucleocapsid

d)

glycoprotein spike

98.

Which of the following infectious agents do not have nucleic acid (DNA or RNA)?

a)

 Protozoa

b)

Prions

c)

Bacteria

d)

Viruses

99.

Which of the following is true regarding viral spikes? (choose all that apply)

a)

they are often made of protein and carbohydrates

b)

they are located inside the capsid

c)

they may act as antigens to trigger an immune response

d)

they may help the virion attach to host cells

100.

Which of the following is TRUE regarding growing viruses? (choose all that apply)

a)

they must be grown in living cells

b)

they can be grown in beef broth media

c)

some can be grown in cell culture

d)

some can be grown in eggs

101.

When a viral infection causes cells to be sick or die, this is called

a)

viral sick day

b)

lysogenic effect

c)

capsid toxicity

d)

cytophathic effect

102.

In retroviral infections, what happens to the DNA complement that is made from the RNA genome?

a)

the DNA complement acts as a toxin in the host cells

b)

the DNA complement is packaged into new retroviral virions

c)

the DNA complement is used to make more proteins

d)

the DNA complement integrates into the host DNA

103.

After infection with chicken pox, the virus remains asymptomatic in the body for years before reactivating to cause shingles. This form of dormancy is called

a)

oncogenesis

b)

persistant infection

c)

latency

d)

acute infection

104.

An infectious, misfolded protein is a

a)

virion

b)

prion

c)

denaturion

d)

phage

105.

Prion diseases primarily affect the

a)

gastrointestinal system

b)

respiratory system

c)

vascular system

d)

brain/neurological system

106.

Which of the following are TRUE of prion diseases? (select all that apply)

a)

prion proteins are inactivated by irradiating the DNA genome of the prion

b)

prion proteins clump together to form holes/sponginess in the brain

c)

prion proteins are easily inactivated with heat

d)

PrP ^Sc is the misfolded infectious form of the normal cellular PrP protein

e)

prion diseases affect animals and humans

107.

During a virus replication cycle, new virions get their envelopes when (select all that apply)

a)

they bud into the plasma membrane to be released from the cell

b)

bind to the plasma membrane for entry

c)

they bud into organelle membranes

d)

synthesize their DNA in the nucleus

108.

In general, animal viruses can only infect cells if the virus can

a)

inject it's DNA/RNA into the cell

b)

cause cancer

c)

bind to receptors on those cells

d)

cause lysis of those cells

109.

A positive EIA test result

(a)