Cancers are classified according to the
answer
type of tissue in which the cancer arises.
size of the tumor.
behavior of the tumor.
none of the answers are correct.

Ablastocyst is a group of cells that forms after a human egg is fertilized. the blastocyst consists of two types of cells. some of these cells will become the placenta. what do the other cells develop into?

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.

What is the most appropriate method of gaining weight (muscle mass)