Which of the following options best depicts the process of protein synthesis? 1. protein → RNA → DNA
2. DNA → amino acid → RNA → protein
3. DNA → RNA → protein
4. RNA → DNA → RNA → protein

Which of the following describe the role a biochemical pump plays in active transport? a it prevents water from moving across the cell membrane. b it uses energy to move materials across the cell membrane against the concentration gradient. c it large molecules cross the cell membrane without using energy. d it a cell move molecules from an area of higher concentration to an area of lower concentration.