What can be said about prokaryotes and eukaroytes?

a. eukaryotes always have a cell membrane, but prokaryotes don't.
b. both of these cell types contain a nucleus.
c. both of these cell types contain genetic material.
d. prokaryotes always have a nucleus, but eukaryotes don't.

Fan egg cell containing the (n+1) number of chromosomes combines with a sperm cell containing the (n) number of chromosomes, what is the result of this union? a) all future somatic cells of the organism will contain the (2n + 1) number of chromosomes. b) all future somatic cells of the organism will contain the (2n - 1) number of chromosomes. c) only certain somatic cells of the organism will contain the (2n + 1) number of chromosomes. d) all future somatic cells of the organism will contain the normal diploid number of chromosomes.

What maintain homeostasis when a persons internal body temperature is 97.5°f

Which greenhouse gas is emitted when burn fossil fuels for energy? a. nitrogen b. oxygen c. carbon dioxide d. helium