Biology HESI A2 Practice Questions and

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

Which organelle is responsible for producing proteins in the cell?

• Nucleus

✔✔B) Ribosome

• Mitochondrion
• Lysosome

Which macromolecule forms the main structure of cell membranes?

• Carbohydrates
• Nucleic acids

✔✔C) Lipids

• Proteins

Which type of cell division results in two identical daughter cells?

• Meiosis

✔✔B) Mitosis 1 / 4

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• Binary fission
• Budding

Which pigment in plants absorbs light for photosynthesis?

• Carotene

✔✔B) Chlorophyll

• Hemoglobin
• Melanin

Which organelle contains digestive enzymes to break down waste?

• Ribosome
• Nucleus

✔✔C) Lysosome

• Golgi apparatus

Which phase of mitosis involves chromosomes lining up in the center of the cell?

• Prophase

✔✔B) Metaphase 2 / 4

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• Anaphase
• Telophase

Which nitrogenous base is unique to RNA?

• Adenine
• Thymine

✔✔C) Uracil

• Cytosine

Which molecule carries genetic instructions from DNA to ribosomes?

• tRNA

✔✔B) mRNA

• rRNA

D) DNA

Which organ system transports nutrients, gases, and wastes throughout the body?

• Nervous system

✔✔B) Circulatory system 3 / 4

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• Digestive system
• Endocrine system

Which organelle is known as the “powerhouse” of the cell?

• Ribosome
• Nucleus

✔✔C) Mitochondrion

• Golgi apparatus

Which type of bond holds complementary DNA bases together?

• Ionic bond

✔✔B) Hydrogen bond

• Covalent bond
• Peptide bond

Which polysaccharide is used by animals for energy storage?

• Cellulose

✔✔B) Glycogen

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