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. How many neurons are there in an average human brain? One billion One billion 100 Trillion 100 Trillion 100 billion 100 billion 1000 million 1000 million Work Harder Finish Results Well Done. You Are Roaring Like A Lion Keep Working. Slow & Steady Wins The Race START NEW
