Several science students were about to conduct an experiment on electricity. the teacher passed on the science activity which clearly stated the procedures for the experiment. one student did not understand the instructions. what should the student do now? a) he could look at what the others are doing. b) he could ask his friends to explain it to him. c) he should ask the teacher to explain it to him. d) he should try to figure out what to do by himself..

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

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute

What kind of bond is created by the attraction between atomic particles of opposite charge? ionic bond hydrogen bond covalent bond nuclear bond