When hiv causes a lysogenic infection, it can remain dormant for years. when it becomes a lytic infection, a. causes no symptoms. b. destroys white blood cells. c. mutates infrequently. d. can no longer cause aids.

Which is not a characteristic of bacteria? a. they are unicellular. b. they are prokaryotic. c. they are the smallest form of life on earth. d. they are multicellular.

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.

If an organ has six haploid chromosomes,how many chromosomes are present. 6 12