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WorksheetsScience lesson 1 + 2
Total questions: 36
Worksheet time: 18mins
Name
Class
Date
1.
1. A nanometer is the measurement unit for viruses = One billionth of a meter.
a)
true
b)
false
2.
2. A micrometer is the measurement unit for viruses = One-millionth of a meter.
a)
true
b)
false
3.
3. Gene therapy is a technique whereby scientists deliver needed genetic material to certain cells. An example is a human condition known as AIDS
a)
true
b)
false
4.
DNA viruses are fairly stable over time (good for making vaccines). Examples: Smallpox and polio.
a)
true
b)
false
5.
RNA viruses never mutate readily (not good for making vaccines). Examples: Influenza and HIV/AIDS.
a)
true
b)
false
6.
6. Viruses also cause diseases in dogs and cats (rabies & distemper) and plants (tobacco mosaic and apple mosaic viruses).
a)
true
b)
false
7.
Dr. Jonas Salk– Smallpox vaccine
a)
true
b)
fase
8.
Polio vaccine - Edward Jenner
a)
true
b)
false
9.
What are the three basic shapes of bacteria
a)
spheres (coccus)
b)
rods (bacillus),
c)
spirals (spirilla).
d)
all of the above
10.
Anaerobic bacteria – do need oxygen for respiration.
a)
true
b)
false
11.
Pasteurization – milk and juice.
a)
true
b)
false
12.
Salmonella can happen in eptiles
a)
true
b)
false
13.
Typhoid fever - handwashing isn't important
a)
true
b)
false
14.
Nitrogen-fixing bacteria provide nutrients for plants – in legumes (peas, peanuts, and soybeans).
a)
true
b)
false
15.
The stucter of bacteria from outisde in is cell wall, cell membrane, cytoplasm, geneticmaterial and ribosomes.
a)
true
b)
false
16.
Autotrophic bacteria release ____________ into the air.
a)
carbon dioxide
b)
nitrogen
c)
oxygen
17.
Tiny structures called _____________ produce proteins inside bacteria.
a)
cilia
b)
ribosomes
c)
flagella
18.
Bacteria are
a)
prokaryotes
b)
eukaryotes.
c)
karyotes.
19.
True or False: Bacteria live almost everywhere, excluding in the ocean and in the human body. *
a)
true
b)
false
20.
Scientists use bacteria to make
a)
ketchup
b)
computer chips
c)
medicines.
21.
. True or False: Most bacteria are harmless or helpful to people. *
a)
true
b)
false
22.
____________________ is a method of slowing down food spoilage.
a)
Conjugation
b)
Pasteurization
c)
Respiration
23.
Some bacteria ____________ other organisms or the food of those organisms.
a)
consume
b)
play with
c)
reproduce with
24.
What is the name of the whip-like structure that helps a bacterial cell to move?
a)
cilia
b)
flagellum
c)
oral groove
25.
_______________ is the process of breaking down food to release energy.
a)
Reproduction
b)
Excretion
c)
cellular Resperation
26.
A tiny nonliving particle that enters and then reproduces inside a living cell is defined as a
a)
parasite
b)
protozoa
c)
virus
27.
An organism that lives on or in a host and causes it harm is called a
a)
parasite
b)
protozoa
c)
virus
28.
An organism that lives on or in a host and causes it harm is called a
a)
parasite
b)
protozoa
c)
virus
29.
A substance introduced in the body to help produce chemicals that destroy specific viruses is a
a)
parasite
b)
vaccine
c)
virus
30.
An organism that provides a source of energy for a virus or another organism is called a
a)
parasite
b)
protozoa
c)
host
31.
The outer layer of a virus is the
a)
cell membrane
b)
cell wall
c)
protein coat
32.
. All viruses have an inner core of
a)
cytoplasm
b)
genetic material
c)
a protein coat
33.
. Viruses are quite small and measured in
a)
millimeters
b)
micrometers
c)
nanometers
34.
TRUE OR FALSE: Viruses are living but cannot reproduce on their own.
a)
true
b)
false
35.
9. TRUE OR FALSE: Vaccines help the body produce substances that allow viruses to multiply. *
a)
true
b)
false
36.
TRUE OR FALSE: Viruses are known to infect plants such as apples and tulips. *
a)
true
b)
false
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