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Unit #3 Bacteria & Viruses

Total questions: 42

Worksheet time: 1hrs 1mins

Name
Class
Date
1.
What do viruses need to replicate?
a)
food
b)
a partner
c)
a cell
d)
moisture
2.
A disease causing organism
a)
pathogen
b)
poison
c)
vaccine
3.
What does invading the host cell enable the virus to do?
a)
increase its size
b)
synthesize needed oxygen
c)
obtain nutrients
d)
reproduce
4.
The graph represents the results of an investigation of the growth of three identical bacterial cultures incubated at different temperatures. Which inference can be made from this graph?
a)
Temperature is unrelated to the reproductive rate of bacteria
b)
Bacteria cannot grow at a temperature of 5°C.
c)
Life activities in bacteria slow down at high temperatures.
d)
Refrigeration will most likely slow the growth of these bacteria.
5.

How would you describe the size of a virus?

a)

Smaller than bacteria

b)

Larger than a parasite

c)

About the size of a dime

d)

Smaller than a proton

6.
What does a virus have on the inside?
a)
DNA, but never RNA
b)
RNA but never DNA
c)
DNA or RNA
d)
neither DNA or RNA
7.
Which BEST compares bacteria and viruses?
a)
bacteria are smaller than viruses
b)
bacteria cause disease, but viruses do not
c)
bacteria are living organisms, but viruses are not
d)
bacteria have genetic material, but viruses do not
8.
Bacteria are prokaryotes which means they
a)
have a nucleus on their capsule
b)
do not contain a nucleus
c)
can live in environments with and without oxygen
9.
Name this bacteria shape
a)
coccus
b)
spirillum
c)
bacillus
10.
Name this bacteria shape
a)
bacillus
b)
coccus
c)
spirillum
11.
Name this bacteria shape
a)
coccus
b)
bacillus
c)
spirillum
12.
True or False: Some types of bacteria eat and clean up oil spills
a)
True
b)
False
13.
Live bacteria are found in milk, cheese and yogurt
a)
True
b)
False
14.
How do bacteria move?
a)
flagella
b)
cilia
c)
they don't
15.
If a bacterial shape is described as being "strepto" smart patients know  the bacteria is growing in a  
a)
clump
b)
cluster
c)
chain
16.
All bacteria are
a)
unicellular
b)
multicellular
c)
eukaryotic
17.

Which statement about bacteria is true?

a)

Bacteria help you breathe

b)

Bacteria help you digest your food

c)

Bacteria help add carbon dioxide to the atmosphere

d)

All bacteria need sunlight to make food

18.
Bacteria cells share which of the following organelles in common with plant and animal cells?
a)
cell membrane, RER
b)
cell wall, mitochondria
c)
nucleus, ribosomes
d)
ribosomes, cytoplasm
19.
Which viral life cycle allows viral genetic material to lay dormant while the host cell reproduces?
a)
lytic
b)
mitosis
c)
lysogenic
d)
S phase
20.
Which can be treated with antibiotics?
a)
Virus
b)
Bacteria
c)
Mutagen
d)
Parasite
21.
What do viruses have in common with living cells? They both...
a)
store genetic information
b)
have chloroplasts
c)
use glucose for cellular respiration
d)
have endoplasmic reticulum
22.

What part of the virus is number 1 (the orange part)?

a)

Capsid

b)

DNA

c)

Surface Markers

d)

Envelope

23.

A vaccine triggers your body to produce _____________ which help fight infections.

a)

antibiotics

b)

antibodies

c)

antigens

24.
What is the last step in the viral reproduction cycle?
a)
A virus attaches to the surface of a host cell
b)
The proteins and genetic material start to assemble in the cell
c)
The host cell bursts open, releasing the new viruses
d)
The virus injects its genetic material into the cell
25.

Which is bigger, a bacterium or a virus?

a)

Bacteria

b)

Virus

26.
Anything that triggers an immune response is a/n
a)
lymph cell
b)
antigen
c)
antibody
d)
neutrop
27.
The picture below illustrates one internal part of the body’s immune system. What process is illustrated in the picture?  
a)
a skin cell destroying germs.
b)
inflammation near an opened wound
c)
a white blood cell destroying pathogens
d)
mucus in the lungs destroying pathogens
28.
 Like all other body systems, the immune system helps the body maintain homeostasis.  Which statement best describes how the immune system does this?  
a)
it protects other organs and tissues from infection and disease
b)
it breaks down food to provide cells with nutrients
c)
it gathers information through the senses and controls all other body systems
d)
 it transports oxygen and carbon dioxide
29.
What are Lymphocytes?
a)
A type of red blood cell
b)
A nucleus 
c)
A type of white blood cell
d)
Bone Marrow
30.
Out of t-cells and b-cells which is the helper cell?
a)
b-cells
b)
t-cells
c)
neither
d)
both
31.

Which of the following are considered internal defenses? (there may be more than one correct answer)

a)

Mucus

b)

Inflammation

c)

Tears

d)

Hair

e)

Tcells

32.

What happens after the second time you are exposed to a pathogen?

a)

The body will not be able to fight off the pathogen quickly, because it knows how to get into the body easier.

b)

The body's immune system will react the same was as it did during the first exposure.

c)

The body can only be exposed to a pathogen a second time if you do not have a vaccine.

d)

The body will know how to fight off the pathogen quickly, because memory cells have been created after the first encounter.

33.

Some examples of external defenses are...

a)

Skin

b)

Mucus

c)

Inflammation

d)

Saliva

e)

Sweat

34.

Which of the following can challenge the immune system?

a)

Allergies

b)

Antibodies

c)

Vaccines

d)

Macrophage

35.

Which of the following statements is TRUE about someone's immune system that has allergies?

a)

Body cells are dividing at an uncontrolled rate.

b)

The body is reacting to foreign antigens that are not dangerous to most people.

c)

T cells and B cells in the body cannot be activated.

d)

The body is mistaking its own cells for foreign antigens.

36.

This is the practice of producing a genetically identical cell or organism

a)

Cloning

b)

Gel Electrophoresis

c)

Genetic Engineering

d)

DNA Fingerprinting

37.

What is the name of the international effort to sequence a human's DNA sequence?

a)

The Gene Sequencing Project

b)

The DNA Fingerprinting Project

c)

The Nuremberg Trials

d)

The Human Genome Project

38.

What does transgenic mean?

a)

An organism that can change its genes at will

b)

A stem cell that can differentiate into anything

c)

An organism that has had another species' DNA put in it

d)

A bacteria that reproduces asexually

39.

Which of the following is used to cut DNA from organisms?

a)

Gel Electrophoresis

b)

Restriction Enzymes

c)

Karyotypes

d)

Haplotypes

40.

A DNA molecule produced by combining DNA from different sources is called?

a)

Mutant DNA

b)

Polyploid DNA

c)

Diploid DNA

d)

Recombinant DNA

41.

What is gene therapy?

a)

Inserting copies of a healthy gene directly into cells with a mutated gene

b)

Producing organisms with identical copies of DNA

c)

Crossing two individuals that have similar desirable characteristics or traits

d)

Crossing two individuals that have different characteristics or traits

42.

If scientists engineer the DNA of tomatoes to make them survive in cold temperatures, what do those tomatoes become?

a)

Human Genome Project

b)

Genetically Modified Organisms

c)

Punnett Squares

d)

Gene Therapy

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