Answer:
C. the lipid bilayer is responsible for keeping out unwanted materials.
Explanation:
Answer:
the answer is U shaped valley
Answer:
Depend on how much water there is
Explanation:
Answer:
C. Synthesis of organic molecules
Explanation:
According to chemical evolution theory, life originated from inorganic molecules by the mode of chemical evolution. In primitive conditions of earth, only inorganic molecules were present. These molecules reacted under lightning, UV radiation and other environmental conditions to give rise to complex organic molecules like amino acids, sugars, lipids etc. They formed the basis for proteins, RNA and other molecules which ultimately led to the formation of cellular structures.