(Science, Math, Grammar)
1.** Which organelle is responsible for producing ATP?
**Answer:** Mitochondria
**2.** What is the primary function of red blood cells?
**Answer:** Carry oxygen
**3.** Which chamber of the heart pumps blood into the aorta?
**Answer:** Left ventricle
**4.** The pH scale ranges from 0 to 14. A substance with pH 3 is:
**Answer:** Acidic
**5.** What is the main function of the kidneys?
**Answer:** Filter blood and produce urine
**6.** Which gas is released during photosynthesis?
**Answer:** Oxygen
,**7.** The basic structural unit of the nervous system is the:
**Answer:** Neuron
**8.** What type of bond involves sharing electrons?
**Answer:** Covalent bond
**9.** Which blood vessel carries blood away from the heart?
**Answer:** Artery
**10.** What is the function of insulin?
**Answer:** Lowers blood glucose
**11.** Which part of the brain controls balance and coordination?
**Answer:** Cerebellum
**12.** The element with atomic number 8 is:
**Answer:** Oxygen
**13.** Which of the following is a prokaryotic cell?
**Answer:** Bacterium
**14.** What does the term "homeostasis" refer to?
, **Answer:** Maintaining a stable internal environment
**15.** Which organ produces bile?
**Answer:** Liver
**16.** What is the role of ribosomes?
**Answer:** Protein synthesis
**17.** The normal pH of human blood is approximately:
**Answer:** 7.35–7.45
**18.** Which valve separates the left atrium from the left ventricle?
**Answer:** Mitral (bicuspid) valve
**19.** What is the function of the alveoli in the lungs?
**Answer:** Gas exchange
**20.** Which type of muscle is involuntary and striated?
**Answer:** Cardiac muscle
**21.** What process converts glucose into pyruvate?
**Answer:** Glycolysis