a student used a microscope to observe elodea submerged in a solution. the student observed the cell cytoplasm pull away from the cell wall and clump together in the center of the cell. which statement best explains why this occured

Which of the following statements is true regarding a basic amino acid? a.) the hydrophilic r group of a basic amino acid will be located on the interior of a protein b.) the positively charged r group of a basic amino acid could bind dna c.) the r group of a basic amino acid would only be able to form covalent bonds with other molecules d.) a basic amino acid would be considered both polar and hydrophobic e.) all of the above