Me no know the ans, pls hlp meh!

what is a difference between prokaryotic and eukaryotic cells?

a.
prokaryotic cells do not have a nucleus, but eukaryotic cells do.
b.
eukaryotic cells do not have membrane-bound organelles, but prokaryotic cells do.
c.
prokaryotic cells always have cell walls, but eukaryotic cells do not.
d.
organisms with eukaryotic cells are always multicellular, but organisms with prokaryotic cells are not.

Why do mutations in genes affect traits? o a. genes determine what type of mutagens an organism has. o b. genes produce proteins that cause traits. o c. genes affect how many chromosomes an organism has o d. genes code for carbohydrates that influence traits.

You have a solution that contains phospholipid vesicles in a test tube. these vesicles have phospholipid bilayers, but do not contain any membrane transporters. you add a number of different molecules to the solution, and wait a period of time for them to equilibrate. if you could measure the concentration of each molecule, for which of the following would you expect to measure equal concentrations inside and outside of the vesicles? assume for this question that the overall osmolarity inside and outside the vesicles is the same (that is, there is no appreciable diffusion of water across the membrane). (select two answers) an amino acid with a hydrophobic side-chain a small non-polar molecule a negatively charged ion a small polar molecule a small lipid hormone

What volume of a 0.25 m solution can be made using 0.55 moles of ca(oh)2