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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