B. Cell membrane
Remember cell membrane is the structure aka “wall of the house” is the clear boundary between the cells internal and external environments:))
Hope this helps
Answer:
<h2>Positive Reinforcement and Operant Conditioning </h2>
Explanation:
<h3>thanks me later </h3>
Answer:
non-covalent hydrogen bonding between paired bases :)
Explanation:
have a wonderful weekend stay safe!