What is the mechanism of evolution proposed by darwin?

Which of the following is a main difference in cell structure between an onion cell and a human cheek cell? a. an onion cell contains one nucleus, whereas a human cheek cell contains two nuclei. b. an onion cell has a cell wall. c. a human cheek cell contains chloroplasts. d. there is no difference between an onion cell and a human cheek cell. you for your.

Depending on the organism the number of in a cell may change

Discuss the functions of epithelial connective nerviud and muscular tissues