The greenhouse effect refers to what?

answers:
gases absorbing harmful radiation traveling from the sun to earth

gases producing their own heat energy as they are formed from chemical reactions

gases trapping heat energy reflected from the earth's surface

none of these

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

One of the purposes of transcription is to produce a sequence of bases that

Will give ! ! widentify the advantages and disadvantages of renewable and nonrenewable energy resources.