C because the heart pumps normally with a constant pressure but when it is lower it needs to push harder to get the blood to where it needs to go causing it to malfunction
In active protein translation and folding.
Rough endoplasmic reticulum is called rough because<span> it has many ribosomes on its wall making it look rough. RER is</span><span> involved mainly in protein production, folding, and quality control. Smooth endoplasmic reticulum is specialised in fats and steroids production. </span><span />
I am pretty sure that your answer is C or D. Im not sure between the two which. Sorry.
Cellular Respiration-
Oxygen is taken in and carbon dioxide is liberated out.
Photosynthesis-
Producing food and capturing energy.
