Answer:
The membrane is selectively permeable because substances do not cross it indiscriminately.
Explanation:
The answer will be to: produce protein
Answer:
C. break hydrogen bonds between complementary nucleotides; the job of DNA helicases is to separate the two strands of a DNA molecule to allow DNA pol III to do its job in synthesizing the complementary DNA strands.
For Plato users...
A. It is a special kind of elliptical orbit.