The diagram shows the trophic levels in a lake on a farm
Large-Sized
Fishes
Fishes, Crabs
(Larvae)
Zooplankton
Diatoms/Algae
Suppose the farmer sprays a field with a
chemical fertilizer. Based on the flow of energy in
the lake, which organisms would contain the
highest concentration of the chemical fertilizer?
A diatoms and algae
B. zooplankton
C. fishes and crabs
D. large-sized fishes

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

Using the periodic table, determine which material is most likely a good conductor

If the dimensions of a cube-shaped cell with a length,height, and width of 1 micrometer were to double, what would be the cell's new ratio of surface area to volume? a.3 to 1 b.4 to 3 c.1 to 2 d1 to 6