Some steps in mitosis are shown below. They are not in order.

Step A: Spindle fibers arrange the chromosomes along the middle of the cell nucleus
Step B: The cell membrane begins to close in, starting to split the cell into two
Step C: Chromosomes condense and begin to resemble the alphabet letter X
Step D: The centromere of each chromosome splits, and chromatids move towards the opposite poles of the cell

Which step represents anaphase?

Step A
Step B
Step C
Step D

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.

Plz ! having a smooth seeds is the dominant trait. having wrinkled seeds is a recessive trait. the offspring of two plants with smooth seeds, a. must have smooth seeds. b. may have smooth or wrinkled seeds. c. must have wrinkled seeds. d. have a 25% change of having smooth seeds.

Which substance contains thylakoids? a) nadph b)atp c)stroma d)chloroplast