If two species have very similar structures, they may have evolved from a(n)

What is the membrane that sheath of schwann cell containing cytoplasm and nucleus that encloses myelin

Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.

Which material is commonly used as a culture medium for living cells