Which best describes a virus? A. A shell that surrounds a capsid
B. A microscope thing with a nucleic acid code
C. A living organism that attacks bacteria
D. A unicellular prokaryotes

Look at the figure above. which atmospheric layer has around 80 percent of the mass of the earth's atmosphere? (hint: it's where the clouds seen on earth are formed.) a. exosphere b. troposphere c. stratosphere d. thermosphere

What statements describe a host organism?

The reactions that occur in the ribosome, where amino acids are combined to form proteins are anabolic or catabolic?