1.
Viruses are not considered living because they are not made of __________ and do not_________
A
cells, reproduce without a host
B
protein, make DNA
C
phospholipid bilayer, make energy using photosynthesis
2.
True or False: Nearly all forms of life—from bacteria and archaea to eukaryotes such as plants, animals, and fungi—have viruses that infect them.
A
true
B
false
C
neither true or false
3.
Viruses may use either _______or ________as their genetic material
A
sugars or phosphates
B
Proteins or lipids
C
DNA or RNA
4.
True or False: Viruses are much smaller than bacterial cells
A
true
B
false
C
neither
5.
The protein shell that surrounds the virus genetic material (either RNA or DNA) is called a ____________
A
collar
B
coffin
C
capsid
6.
True or False: Viruses will interact with specific hosts because the outer proteins on the virus must match the proteins on the host cell membrane. This is similar to a lock and key. If the proteins don't match, the virus can't infect the cell.
A
true
B
false
C
neither
7.
Why must viruses take over cells to reproduce?
A
They lack the organelles needed to reproduce on their own
B
Using host cells is quicker.
C
Viruses are lazy
8.
Once an infection occurs, viruses can reproduce ________________
A
very rapidly
B
very slowly
C
without using any energy
9.
what is the most effective way to prevent virus infection?
A
wash your hands regularly
B
there is no way to prevent it
C
touch as many dirty objects as possible, then make sure to touch your face and eyes.
10.
Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. Once a virus gains entry to the body, it invades a host cell in order to --
A
deactivate the host cell's defenses
B
access cellular processes for replication
C
metabolize host proteins and grow
11.
Which of the following diseases are non-living and need a host cell to replicate? (aka a virus)
A
Influenza (Flu), HIV/AIDS, Covid-19
B
Warts, Food Poisoning, UTI
C
All are viral infections
12.
Which structure is found in prokaryotes but not in viruses?
A
cell membrane
B
DNA
C
surface proteins
13.
What is the protein structure that surrounds and protects the genetic material of a virus?
