What's too much? Well, the rule of thumb is that you should consume about 0.45 grams of protein per pound for men and 0.35 grams of protein per pound for women—if you're sedentary (protein intake recommendations vary by activity level).
What would happen is you would not get enough protein and stuff to make your body keep going and keep getting energized. you need like 30 g or protein in order to keep your body going each day.
A carrier could be a person that is infected with a disease and agent but doesn't show any symptoms of it. there is a genetic carrier which is a person or an organism that inherited a trait or mutation through genetics but doesn't show any symptoms
