you believe a bacterium is attaching to animal cells by binding to the carbohydrate portion of a specific glycoprotein. to test this hypothesis you pre-incubate the bacteria with various molecules and then test for inhibition of attachment to the animal cells. which result supports the hypothesis that the bacteria recognize the carbohydrate component of the animal glycoprotein?

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.

The basic building blocks of dna and rna are nucleotides