Answer:
b. steroid
Explanation:
Steroids can cross the lipid membrane bilayer thus being able to relay the secondary message.
Organism is the answer i think
Answer: Algae can either be unicellular and multi-cellular while plants are multi-cellular organisms. 2. Algae typically live underwater while plants thrive on land. ... They don't have structures such as connective tissues, leaves, stems and roots unlike plants.
Explanation: