Bacteria and Viruses

The three main shapes of bacteria are all of the following EXCEPT

• rod shaped (bacilli)
• spherical (cocci)
• octagon (octilli)
• spiral (spirilla)

The flagella on a bacteria serve what purpose? 

• helps the bacteria find a mate
• cleans the bacteria
• helps the bacteria to move
• protects the bacteria

In a newly colonized area, certain bacteria play a crucial role in the ecosystem. What is the primary function of producer bacteria in such environments?

• make their own food through photosynthesis.

• consume other organisms.

• break down decayed organisms. 

• break down chemicals. 

Tags

NGSS.MS-LS2-3

Consumer bacteria get their food through

• photosynthesis.
• mutualism.
• chemotrophic processes.
• consuming other organisms.

Which statement about bacteria is true?

• All bacteria are prokaryotes
• All bacteria are eukaryotes
• All bacteria are autotrophs
• All bacteria are heterotrophs

In the context of human colonization of the gut, which statement about bacteria is true?

• Bacteria help you breath

• Bacteria help you digest your food

• Bacteria help add carbon dioxide to the atmosphere

• All bacteria need sunlight to make food

Tags

NGSS.MS-LS2-3

Imagine you are preparing for a trip to a region with common infectious diseases: a vaccine triggers your body to produce _____________ which help fight infections.

• antibiotics

• antibodies

• antigens

During a medical examination, a doctor prescribes antibiotics to a patient. Antibiotics only work against what organisms?

• viruses

• bacteria

• prions

During a visit to the doctor, you learn that influenza is caused by a:

• virus

• bacteria

• prion

Imagine a scenario where a virus enters a cell: it immediately makes copies of itself. This process is called _______________________________.

• remediation

• replica

• replication