1. Which scientist is given credit for being the first to observe and identify cells?

Answer: Robert Hooke


2. What types of cells do not contain membrane-bound organelles and are the oldest known forms of life?

Answer: Prokaryotes


3. Which organelle controls a cell's activities?

Answer: Nucleus


4. Which organelles are known as the powerhouses of the cell because they produce energy?

Answer: Mitochondria


5. Which organelle is responsible for the production of protein?

Answer: Ribosomes