Describe the R groups of the amino acids that make up the domain of the RCK protein that allows it to extend from the cytosol to the extracellular
space.

Chicken pox and hepatitis are bacterial diseases. true or false?

The climate on the leeward side of a mountain differs from that on the windward side mostly in

Which of the following must be true for a fossil organism to be useful as an index fossil? a. the fossil organism must be widespread geographically. b. the fossil organism must be abundant. c. the fossil organism must be limited to a short span of geologic time. d. all of the above.