What can be said about prokaryotes and eukaroytes?
a. prokaryotes always have a nucleus, but eukaryotes don't.
b. both of these cell types contain a nucleus.
c. eukaryotes always have a cell membrane, but prokaryotes don't.
d. both of these cell types contain genetic material.

Which statement describes compounds a. compounds are made of one type of atom. b. compounds cannot be represented by models. c. compounds are represented by chemical formulas. d. compounds cannot be broken down into simpler forms.

What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.

What do we call an individual that has inherited two identical alleles for the same trait? a.homozygous b.heterozygous c.monozzygous