Which of the following are the starting substances in photosynthesis? a. glucose and oxygen. b. glucose and carbon dioxide. c. water and oxygen. d. water and carbon dioxide.

What is the function of nucleic acids

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.