Which means of particle transport requires input of energy from the cell?
a. diffusion
b. osmosis
c. facilitated diffusion
d. active transport

Which of the following statements regarding anfinsen's denaturing experiments with ribonuclease a (rnase a) are valid? exposing the denatured protein to air oxidation and then dialysis to remove urea restored the protein to its original functionality. removing urea by dialysis and then allowing air oxidation of the denatured protein restored the protein to its original functionality. denaturing the protein with both urea and β-mercaptoethanol yielded an inactive protein. anfinsen concluded that protein folding is determined by its primary sequence.

2points what is the term for a female reproductive cell? a. egg b. chromatid c. allele d. fertilization

Which direction does the energy flow in this energy pyramid ?