Biology QuizTheLastDialogue BIOLOGY QUIZ Test Your Knowledge Of Biology With These Quizzes Biology Online Quiz for Kids and Adults #1. Is there a central processing Unit in the brain? Yes Yes No No Work Harder #2. Mitochondria in living cell is responsible for: Building proteins Building proteins To controls all its activity To controls all its activity communication with the external environment communication with the external environment Power generation Power generation Work Harder Finish Results Well Done. You Are Roaring Like A Lion Keep Working. Slow & Steady Wins The Race START NEW