Pathology

Which of the following is a true statement about bacteria?

• Bacteria exist in only a few environments on earth

• Bacteria are typically larger than eukaryotic cells

• Most bacteria are harmful to humans

• Bacteria can be both harmful and helpful to humans

What do all bacteria have in common?

• They all have cell nuclei.

• They're all multi-cellular organisms.

• They're all single-celled organisms.

• They can all be found inside the human body

Which is usually the smallest of these options

• bacteria

• virus

• eukaryotic cells

• prokaryotic cells

What would happen to a virus if it couldn't find a host cell to invade?

• It wouldn't be able to reproduce

• It wouldn't be able to travel through the air

• Its genetic information would wither away

• . It would survive indefinitely

What do viruses have in common with your body's cells?

• Their genetic material is surrounded by a nucleus

• They contain many complex organelles

• They contain DNA or RNA

• They are surrounded by capsids

What does a virus do once it's inside one of your cells?

• It stays inside the cell for a while, and then leaves

• It eats up all of the machinery in the cell

• It uses the cell's machinery to make copies of itself

• It prevents the mitochondria from converting glucose to ATP

Bacteria are prokaryotes, meaning they ________.

• lack a nucleus

• are very large

• contain no DNA

• have a cytoplasm

Microorganisms or infectious agents that cause disease are called __________.

• pathogens

• capsids

• fungi

• microbes

Which microbes are typically larger in size?

• Viruses

• Bacteria

• Both viruses and bacteria are about the same size

Antibiotics ________ treat viral infections.

• can

• cannot