Rough endoplasmic reticulum or RER for short.
Hope I helped
:)
Have a great day and happy learning
Answer:
IGCSE**
u can just go through the book
I think it's a I think not so sure it's prombly not
Biological structures like DNA, proteins and cells all depend on molecules. ... Neurotransmitters like epinephrine are pretty simple molecules, but without them our nervous system couldn't work. Oxygen, containing just two oxygen atoms, is a very simple molecule, and it is certainly essential to living things.
I think it is b because it is a result of an environmental influence
