20. a comet's tail always points away from the sun because
dust; the solar wind pushes the particles away from the comet's head
ion; the solar wind pulls the particles towards the comet's head
dust; the solar wind pulls the particles towards the comet's head
ion; the solar wind pushes the particles away from the comet's head

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

Aresident is five feet tall.what is the measurements in iches

Which of the following statements is true of cells