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2025 HESI A2 Biology | Complete Reviewed Questions & Correct Answers – Guaranteed Pass Prep

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This 2025 HESI A2 Biology Exam Prep Guide provides a complete collection of reviewed practice questions with correct answers and explanations, carefully designed to mirror the official HESI Admission Assessment (A2) exam. Each question is written in exam format with step-by-step rationales, making it easier to understand concepts and boost retention. Topics covered include cells, genetics, DNA/RNA, macromolecules, metabolism, evolution, ecology, photosynthesis, cellular respiration, and human body basics. The explanations reinforce both correct and incorrect choices, helping students build strong test-taking skills. Perfect for students preparing for the HESI A2 Biology section in 2025, this study resource saves time by focusing on high-yield content. Whether used for structured study sessions, self-testing, or last-minute review, this HESI A2 Biology Q&A bank builds confidence and increases your chances of passing on the first attempt.

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HESI A2 Biology Complete Reviewed
Questions And Answers 2025
GUARANTEED PASS



How many chromosomes do sperm and egg produce in meiosis?
- ANSWER 23

How many chromosomes do sperm and egg produce in mitosis?
- ANSWER 46

What helps the cell shape and cell to adapt?
- ANSWER cytoskeleton

What gives the cell the ability to move and proper?
- ANSWER microtubules

What is the main component of blood plasma?
- ANSWER water

What is the first step in metabolism of food to cellular energy?
- ANSWER glycolysis

What drives the cell/ pushes it forward?
- ANSWER propulsion

All humans have how many pairs of chromosomes?
- ANSWER 23 pairs

, The plasma membrane is made of/ composed of what?
- ANSWER lipids, proteins, and carbohydrates

What organelle is responsible for packaging, processing, and shipping?
- ANSWER Golgi Apparatus

Plant cells have what organelle that functions as storage, waste disposal,
and protection?
- ANSWER vacuoles

What is the site of cellular respiration? (eukaryotic cells)
- ANSWER mitochondria

What are plasma membranes mostly made of?
- ANSWER lipids

What is the magnification of an ocular lens on a microscope?
- ANSWER 10x

What part of the microscope is the side going to be placed on?
- ANSWER stage

What holds the genetic code for each person?
- ANSWER DNA

What is DNA made of?
- ANSWER nucleotides

is the most important component of the cell, contributing to protection,
communication, and the passage of substances into and out the cell.
- ANSWER The cellular membrane

the plasma membrane is made of how many phospholipid layers?
- ANSWER 2

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