Which of the following characterizes the Domain Bacteria?
A) Prokaryotic cells; ether linkages in phospholipids
B) Eukaryotic cells; ester linkages in phospholipids
C) Prokaryotic cells; ester linkages in phospholipids
D) Complex cellular structures
E) Multicellular

C)

Explanation:

Bacteria are prokaryotic, which means they (generally) don't have organelles or a nuclear envelope around their nucleus.  They have ester linkages in the phospholipids in their cell membranes, while archea, which are also prokaryotic, have ether linkages.  Ether linkages are more chemically stable than ester linkages, and since archea live in extreme environments this is helpful.  

Bacteria are not multicellular and do not have organelles (complex cellular structures) besides ribosomes.

it's     c       this is a cell (b) with a nucleus (c) containing dna (a). the dna is organized into chromosomes (d). a section of the chromosome that codes for a trait is called a gene (e).

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!