What is the function of the structure identified by the red arrow?

The image shows bacteria with thick cell walls. The red arrow points to these cell walls.

Food capture

Mobility

DNA transfer

Protection

There are only about 250,000 known fossil species. true or false

Which group of protists would be most likely to have cilia as adults and why? (1 point)the sporozoan protists would since they have to spread their spores around. the heterotrophic protists would since they use them to gather food. the parasitic protists would since they need to find other organisms to attack. the autotrophic protists would since they must move to find light.

In the induced-fit model of enzymes, a substrate associates itself with which part of an enzyme? a. the denatured site b. the amino acid site c. the active site