Answer:
<u>Solar energy.</u>
Explanation:
The leaves absorb sunlight, and it is converted into chemical energy.
Hope this helps!
I think it is a chromosome
Answer:
such as glucagon, bind to membrane-bound receptors. The binding of the hormone triggers a signal transduction pathway, a process of molecular changes that turns the hormone's extracellular signal into an intracellular response.
Explanation: