2022 Biology Final Exam- Bacteria & Viruses

What does invading the host cell enable the virus to do?

• increase its size
• synthesize needed oxygen
• obtain nutrients
• reproduce

When a new viral infection appears in a population, scientists usually try to develop a vaccine against the virus. Which substances would most likely be contained in the new vaccine?

• live bacteria that ingest viruses
• white blood cells from an infected individual
• weakened viruses associated with the infection
• a variety of microbes that will attack the virus

Which of the following is true for both bacteria and viruses?

• both contain genetic material

• can be killed using antibiotics

• have a cell membrane

• have a protein coat

What type of cells contain a nucleus?

• bacterial cells

• virus cells

• prokaryotic cells

• eukaryotic cells

A bacterium reproduces asexually by dividing to form two new bacterial cells. What is the name of the process by which bacteria reproduce?

• meiosis

• mitosis

• budding

• binary fission

Bacteria come in which of the following shapes?

• rod, cone, spiral

• rod, sphere, spiral

• rod, sphere, cone

• sphere, cone, spiral

Which viral life cycle kills its host cell by lysing (bursting)t he cell rapidly?

• Lysogenic Cycle

• Lytic Cycle

• Binary Fission

• Conjugation

True or False
The flu is caused by a virus.

• true
• false

Some bacteria move by using a long, whip-like structure called a(n) ____________________

• tail
• cillia
• organs
• flagellum

What is one thing that viruses have in common with living cells?

• Have DNA 
• Can reproduce on its own 
• Can grow and develop
• Can obtain and use energy