The ear bone name the ___1___ strikes the 2___(oval or round) window, setting up waves in the ___3__ (endolymph or perilymph). This pushes on the floor of the upper (scala vestibuli or scala tympani). As a result the cochlear duct is moved, and so is the perilymph in the lower canal, the (scala vestibuli or scala tympani). The pressure of the perilymph is finally expended by bulging out the 6___ (oval or round) window.

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

The body is protected against harmful flu viruses by

Which of these has happened to your food by the time it reaches your small intestine? a. all the macromolecules have been broken down completely. b. lipids and starches have been partially broken down. c. starches and proteins have been partially broken down. d. proteins and lipids have been broken down into subunits.