Pop Quiz- Microbes and Disease

The diagram shows four different microbes.

Which microbe would best be characterized as nonliving?

• 1

• 2

• 3

• 4

The diagram shows one common shape for a virus.

What is the principle role of the structures indicated by the arrows?

• disease transmission

• viral movement

• to help attach to a host cell

• to recognize a foreign virus

A student became ill on three occasions throughout the year. Each time, he was prescribed the same antibiotics since he was diagnosed with the same illness. What will likely happen if the student becomes ill again, and the same antibiotics are prescribed?

• The antibiotics which were effective before will still work because bacteria never alter their DNA sequences.

• The antibiotics which were effective before may not work this time because bacteria undergo mutations.

• The student will not require the prescription because the antibiotics helped him build up immunity.

• The student will need twice the dosage of antibiotics to fight the same level of infection due to resistance.

Use the diagram to answer the question.

The previously uninfected human becomes infected with Malaria. Which term best describes the mosquito?

• carrier (is infected with the virus)

• mutagen

• parasite

• vector (not infected with the virus, but can transmit it)

Ben became sick with the symptoms of a runny nose, sore throat, and fever. His doctor prescribed antibiotics to help him recover. What most likely caused Ben's illness?

• bacteria

• fungi

• a mutagen

• a virus

Which statement about viruses is true?

• A virus is a prokaryotic microbe.

• A virus requires a host cell to reproduce.

• A virus is a eukaryotic microbe.

• A virus moves by cilia or flagella.

Penicillin is an antibiotic that destroys bacteria by attacking the cell wall. Which statement describes why penicillin is ineffective on viruses?

• Penicillin helps viruses multiply.

• Viruses can use penicillin as a nutrient.

• Viruses do not have cell walls.

• Penicillin makes viruses more virulent.

What important role do bacteria called decomposers play?

• They return basic chemicals to the environment.
•  They produce vitamins
• They slow down food spoilage.
• They kill harmful bacteria.

Tags

NGSS.MS-LS2-3

Which viral reproductive cycle is displayed in the image?

• Lytic Cycle
• Lysogenic Cycle
• Active Cycle
• Passive Cycle

Virus that contains RNA and used the enzyme called reverse transcriptase to make a DNA copy

• Retrovirus
• Bacteriophage
• Virus
• Capsid