Bacteria and Viruses

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

Producer bacteria

• make their own food through photosynthesis.
• consume other organisms.
• break down decayed organisms. 
• break down chemicals. 

Archaea love harsh environments. 

• true
• false

Bacteria are....(select all that apply)

• Single-celled organisms

• Multi-cellular organisms

• Eukaryotes

• Prokaryotes

Antibiotics only work against what organisms ?

• viruses

• bacteria

• prions

Bacteria come in which of the following shapes?

• rod, cone, spiral

• rod, sphere, spiral

• rod, sphere, cone

• sphere, cone, spiral

Which of the following is a true statement about bacteria?

• Bacteria exist in only a few environments on earth

• Bacteria can grow to extremely large sizes

• Most bacteria are harmful to humans

• Bacteria can be both harmful and helpful to humans

What might happen if you didn't have bacteria in your digestive tract?

• Your intestines would shut down

• Your body couldn't break down certain types of food

• You would never get sick

• You wouldn't be able to eat vegetables

What does Tim mean when he says bacteria are the most abundant form of life on earth?

• They're the smallest form of life on earth

• They're the most commonplace form of life on earth

• They're the most diverse form of life on earth

• They're the most specialized form of life on earth

How did bacteria make complex life on Earth possible?

• By releasing oxygen into the atmosphere

• By destroying life-inhibiting volcanoes

• By evolving rapidly into multi-celled organisms

• All of the above