Which of the following is true of rna compared to dna

a-it lacks phosphate group s
b-it is a single-stranded molecule
c- its nucleotides do not have sugars
d-it contains four different nucleotides

Maybe haha

Atp is is our little "pocket" of energy. of course, if you have too little, then it means you have too little energy, and you'll pass out. the way to not have enough, is to have no energy sources (glucose, fats, proteins). you can't have too many atp molecules. cycles like the krebs cycle produce it, but if you have too much of any substrate (or too little for that matter), the cycle stops and atp is no longer made (it stops until substrate levels are such that the process can go on). in any case, this is unlikely since atp is constantly hydrolyzed and remade, even while you're asleep. you won't have too much. if you have zero, you are dead or dying.

Closing a ring restricts the rotation around individual car bon carbon bonds hope it will you !