Lipids have hydrophilic heads and hydrophobic tails. This allows them to ___. a. self-organize into a single layer surrounding a sphere of water b. form a double-layered membrane with heads facing out and a layer of water between the tails c. act as catalysts for chemical reactions d. act as information carriers for protocells e. self-organize into a double layer surrounding a sphere of water

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.

the answer is c. it will give up it's valence electron to the other atom.

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.

idk let me see fdfdgdg