Proteins are made from blank arranged in chains a. carboxyl groups b. amino acids c. hydrocarbons d. hydroxyl groups

Glutamic acid: hydrophilic or hydrophobic? positive, negative, or neutral? valine: hydrophilic or hydrophobic? positive, negative, or neutral?

The term equestrian relates to which animal? bulls cows horses pigs

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass