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HESI A2 SCIENCE EXAMINATION TEST QUESTIONS AND VERIFIED SOLUTIONS 2026

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HESI A2 SCIENCE EXAMINATION TEST QUESTIONS AND VERIFIED SOLUTIONS 2026

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HESI A2 SCIENCE EXAMINATION TEST
QUESTIONS AND VERIFIED SOLUTIONS 2026

◉ Mitochondria. Answer: Produces energy (ATP) for the cell.

◉ Ribosomes. Answer: Protein synthesis.

◉ Nucleus. Answer: Controls cell activities and contains DNA.

◉ Prokaryotic Cells. Answer: Cells that do not have a nucleus.

◉ Eukaryotic Cells. Answer: Cells that have a nucleus.

◉ Mitosis. Answer: Process that produces body cells.

◉ Meiosis. Answer: Process that produces sex cells (sperm/egg).

◉ DNA Bases. Answer: Adenine, Thymine, Cytosine, Guanine.

◉ RNA Bases. Answer: Adenine, Uracil, Cytosine, Guanine.

, ◉ Enzymes. Answer: Speed up chemical reactions.

◉ Cellular Respiration Equation. Answer: Glucose + Oxygen →
Carbon Dioxide + Water + Energy (ATP).

◉ Homeostasis. Answer: The body's ability to maintain internal
balance.

◉ Circulatory System. Answer: To transport oxygen, nutrients, and
waste throughout the body.

◉ Heart. Answer: The organ that pumps blood through the body.

◉ Chambers of the Heart. Answer: Right atrium, Right ventricle, Left
atrium, Left ventricle.

◉ Oxygenated Blood Pump. Answer: Pumped by the left side of the
heart.

◉ Arteries. Answer: Vessels that carry blood away from the heart.

◉ Veins. Answer: Vessels that carry blood to the heart.

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