Which of the following is true about the sun’s radiation?

a)it reaches the earth with a wide range of wavelengths.

b)it reaches the earth with several frequencies and one wavelength.

c) it reaches the earth with several wavelengths and one frequency.

d) it reaches the earth only as an ultraviolet light

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

Isolated volcanic peaks on the ocean floor are

The normal shape of an enzyme is as shown in structure a. if the enzyme’s shape changes to that shown in structure b, what are two consequences of this change?