WorksheetsVirus Structure
Total questions: 15
Worksheet time: 26mins
Name
Class
Date
1.
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
2.
All viruses contain-
a)
nucleic acids
b)
ribosomes
c)
mitochondria
d)
cytoplasm
3.
Which best describes the basic structure of a virus?
a)
nucleic acid strand surrounded by a protein coat
b)
a tail surrounded by a protein coat
c)
a tail surrounded by a carbohydrate coat
d)
nucleic acid strand surrounded by a carbohydrate coat
4.
What part of a virus is the protein capsule that houses the genetic material (DNA/RNA)?
a)
tail
b)
nucleus
c)
capsid
d)
glycoprotein
5.
A(n) _____ is a virus that enters a bacterial cell.
a)
endospore
b)
decomposer
c)
plasmid
d)
bacteriophage
6.
When a virus invades a living cell, its _______
takes over the cell's functions.
takes over the cell's functions.
a)
outer coat
b)
genetic material
c)
core
d)
cytoplasm
7.
What do viruses need to reproduce?
a)
they need genetic material
b)
They need a host cell
c)
They need bacteria
d)
They need insulin
8.
Viruses are made up of
a)
Nucleus, membrane
b)
Capsid, nucleus
c)
Capsid, nucleic acid
d)
Mitochondria, nucleus
9.
Why do viruses have projections on the outside?
a)
To send signals to other viruses.
b)
To maintain their structure.
c)
To attach to the host cell.
d)
To reproduce.
10.
Viruses are much smaller that even the smallest bacterial cell. For this reason, they must be measured in units called:
a)
decimeters (dm)
b)
centimeters (cm)
c)
nanometers (nm)
d)
micrometers (um)
11.
Observe the diagram of the two viruses.
Part C is the ______________
a)
Genetic material
b)
Capsid
c)
Ligand
d)
Envelope
12.
Observe the diagram of the two viruses.
Part B is the ______________
a)
Genetic material
b)
Capsid
c)
Ligand
d)
Envelope
13.
What is another word for those antigens, labeled by "A"?
a)
Glycoproteins
b)
Phospholipids
c)
Osmoregulators
d)
ATPase
14.
Which of the following correctly describes viruses?
a)
non-living because they grow and develop
b)
living because they can use energy
c)
non-living because they cannot reproduce on their own
d)
living because they can maintain homeostasis
15.
Which of the following is a trait that a virus shares with a living organism?
a)
They use oxygen
b)
They have genetic material
c)
They grow
d)
They digest food
100 %
