1. Which part of the brain is responsible for regulating heart rate and breathing?
2. Which of the following is the basic unit of life?
3. What is the primary function of xylem in vascular plants?
4. Which of the following diseases is caused by a deficiency of vitamin C?
5. Which hormone is primarily responsible for regulating the sleep-wake cycle in humans?
6. What is the role of the stomata in plants?
7. Which of the following is a characteristic feature of dicotyledonous plants?
8. Which biomolecule is the main component of cell membranes?
9. Which enzyme is responsible for the unzipping of the DNA double helix during replication?
10. In which part of the plant does photosynthesis primarily occur?
11. Which of the following is not a function of the smooth endoplasmic reticulum?
12. What is the powerhouse of the cell?
