Hello.
what is hydrogen??

Explain why phospholipid molecules form a bilayer. (3 marks)

Which statement about dna replication is true? a. eukaryotes only have one circular chromosome that unwinds at multiple locations. b. eukaryotes can only replicate one segment of a chromosome at a time. c. prokaryotes can only replicate their single circular chromosome in the nucleus. d. prokaryotes only have one origin of replication to initiate replication.

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?