Answer:
Hydrogen
Explanation:
I think it is showing cellulose cell or DNA as it is inverted 180° for the option there is no option for Phosphodiester bond however I know the answer is hydrogen.
I believe it is scientific laws.
Enzymes bind with chemical reactants called substrates
That would be A.
Cells have specific receptors for different hormones that allow the intake of them.
Answer:
i think 1 is either b or d
Explanation:
