HESI A2: BIOLOGY 2025 CHATGPT EXAM QUESTIONS

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HESI A2: BIOLOGY 2025 (CHATGPT) EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -100 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: (Natural Selection and Evolution: Evidence for Evolution) Shows gradual changes over time.

Answer:

Fossil Record

Question 2: What three things does the Krebs Cycle (Citric Acid Cycle) produce

Answer:

? 2 ATP per glucose molecule.? NADH and FADH2 for the Electron Transport Chain.? Releases CO2.

Question 3: (DNA Technology)

? Separates DNA fragments based on size.? Used in DNA fingerprinting.

Answer:

Gel Electrophoresis

Question 4: (DNA Replication)

? Each new DNA molecule consists of one original strand and one new strand.

Answer:

Semi-Conservative Process

Question 5: Chemical messengers secreted by endocrine glands.

Answer:

hormones

Question 6: ? Lymph nodes, lymph vessels, spleen.

? Functions: Fluid balance, immune defense, fat absorption.

Answer:

Lymphatic System Question 7: (Natural Selection and Evolution: Speciation) Geographic barriers separate populations.

Answer:

Allopatric

Question 8: ? Control of water balance.

? Example: Kidneys filtering blood to maintain water-salt balance.

Answer:

Osmoregulation

Question 9: (Basic Microbiology)

? Eukaryotic organisms.? Can be unicellular (yeast) or multicellular (mold).

Answer:

Fungi Question 10: (Enzyme Activity) Optimal temperature increases activity; too high denatures the enzyme.

Answer:

Temperature

Question 11: (Levels of Biological Organization) Groups of similar cells (e.g., muscle, nervous tissue).

Answer:

• Tissue Level

Question 12: Cell expels substances (e.g., release of neurotransmitters).

Answer:

Exocytosis

Question 13: ? Produces four genetically diverse haploid cells.

? Meiosis I ? Meiosis II

Answer:

Meiosis (Gamete Formation)

Question 14: (Ecosystem Dynamics)

? Exponential vs. logistic growth.

? Carrying capacity: Maximum population an environment can support.

Answer:

Population Growth

Question 15: (DNA Technology)

? Amplifies small DNA samples.? Useful in genetic testing and forensics.

Answer:

Polymerase Chain Reaction (PCR) Question 16: (Levels of Biological Organization) Groups of organs performing a specific function (e.g., digestive system).

Answer:

• Organ System Level

Question 17: Controls what enters and exits the cell.

Answer:

Selective Permeability

Question 18: ? Speed up chemical reactions by lowering activation energy.

? Specific to substrates (lock-and-key model).? Affected by temperature, pH, and substrate concentration.

Answer:

Enzymes

Question 19: (Hormones) raises blood sugar

Answer:

Glucagon

Question 20: Move substances in and out.

Answer:

Transport proteins

Question 21: (Plant Biology)

? Have a cell wall, chloroplasts, and a central vacuole.

Answer:

Plant Cells

Question 22: Cell engulfs substances (e.g., phagocytosis for large particles).

Answer:

Endocytosis

Question 23: (Enzyme Activity)

? Temperature ? pH

Answer:

Factors Affecting Enzymes

Question 24: (Levels of Biological Organization) Complete living entity.

Answer:

• Organism Level