Which statement describes how beta decay occurs? O A
A neutron changes into a proton and a high speed electron is emitted from the nucleus.
B
An electromagnetic wave is emitted from the nucleus.
С
A helium nucleus is emitted from the nucleus.
D
A proton changes into a neutron and a high speed electron is emitted from the nucleus.

The chromosomal structure that limits the number of cell divisions of a cell is the the chromosomal structure that limits the number of cell divisions of a cell is the kinetochore telomere histones centromere

Where is most of the fresh water on earth found a in the ocean b in glaciers and in ice caps c in rivers d in the soil

The hershey and chase experiments involved the preparation of two different types of radioactively labeled phage. which of the following best explains why two preparations were required? a. the bacteriophage used in the experiments was a t2 phage. b. it was necessary that each of the two phage components, dna and protein, be identifiable upon recovery at the end of the experiment. c. each scientist had his own method for labeling phage, so each conducted the same experiment using a different isotope. d. establishing the identity of the genetic material required observation of two phage generations.