HESI A2 Biology Questions and

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HESI A2 Biology Questions and Answers | Latest Version | 2025/2026 | Correct & Verified

Which bond holds the two strands of DNA together?✔✔A) Hydrogen bonds

• Ionic bonds
• Covalent bonds
• Peptide bonds

Which type of cell division produces gametes?

• Mitosis

✔✔B) Meiosis

• Binary fission
• Budding

Which process do plants use to release energy stored in glucose?

• Photosynthesis

✔✔B) Cellular respiration 1 / 4

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• Fermentation
• Transpiration

What is the primary function of ribosomes?

• Energy storage

✔✔B) Protein synthesis

• DNA replication
• Waste removal

Which part of the plant is responsible for gas exchange?✔✔A) Stomata

• Phloem
• Xylem
• Cuticle

Which structure controls what enters and exits a cell?✔✔A) Plasma membrane

• Nucleus 2 / 4

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• Cell wall
• Cytoplasm

What is the main role of chlorophyll in plants?

• Store glucose

✔✔B) Absorb light energy

• Transport water
• Produce ATP

Which organelle digests and recycles cellular waste?

• Ribosome

✔✔B) Lysosome

• Nucleolus
• Centriole

Which process describes water moving across a semipermeable membrane from high to low concentration?

• Active transport 3 / 4

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✔✔B) Osmosis

• Facilitated diffusion
• Endocytosis

Which molecule carries genetic instructions in all living organisms?

✔✔A) DNA

B) RNA

C) ATP

• Protein

Which stage of mitosis involves chromosomes lining up at the cell's equator?

• Prophase

✔✔B) Metaphase

• Anaphase
• Telophase

Which base in RNA replaces thymine found in DNA?

• Cytosine
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