Build atoms just as you did before. as you add protons and electrons to the atom, noticed that the electrical charge changes. if the atom is charged, it's called an ion. determine how to make positive and negative ions. click the plus sign on the net charge window. based on your exploration, which subatomic particle is positive? which subatomic particle is negative?

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

Monitor and apply fix up strategies

What are the student's observations and inferences before he starts his investigation?