Biology QuizTheLastDialogue BIOLOGY QUIZ Test Your Knowledge Of Biology With These Quizzes Biology Online Quiz for Kids and Adults #1. How Many insects Are There on Earth? Ten billion Ten billion Ten trillion Ten trillion Ten million trillion Ten million trillion 100 billion 100 billion Work Harder #2. What is the outermost layer of animal’s living cell? Chloroplast Chloroplast Cytoplasm Cytoplasm Ribosomes Ribosomes Plasma membrane Plasma membrane Work Harder Finish Results Well Done. You Are Roaring Like A Lion Keep Working. Slow & Steady Wins The Race START NEW