Viruses and Bacteria

All viruses are different, but what are two parts that a virus must have?

• Genetic Information (DNA or RNA)

• a lipid membrane

• a nucleus

• a protein coat

Which of these statements is true?

• A virus is unicellular, it has only one cell.

• A virus may sometimes be multicellular, have many cells.

• A virus has no cells

Which statement is true?

• A virus has a nucleus, but no other organelles.

• A virus has a nucleus and ribosomes.

• A virus has no organelles, because it has no cells, and it is non-living.

The little sticks poking out of the sides of these viruses are called

• sugar sticks

• spike proteins

• covid claws

Place the steps of binary fission in order

• Two bacteria

• Cell membrane pinches in two

• One bacterium

• DNA replicates

Tags

NGSS.MS-LS3-2

What is one way to help avoid getting a viral disease?

• Washing hands

• Getting vaccinated

• Avoiding people

• Coughing into your elbow

What is the purpose of a bacterium's flagellum?

• to help it move

• to swish in the wind

• to look pretty

• to make the bacterium camouflage

Tags

NGSS.MS-LS1-2

Bacteria are prokaryotes, meaning they ________.

• lack a nucleus

• are very large

• contain no DNA

• have a cytoplasm

A viruses are considered

• Living

• Non-living

Viruses require a host cell to

• Breathe and eat

• Replicate

• Move and sleep

• Make protein and carbohydrates