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RN Pre-Entrance Exam biology practice questions cell structure and function, genetics, and microbiology—designed to help prepare for the biology portion of the RN Pre-Entrance Exam. Each question includes the correct answer and a brief explanation. $15.99
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RN Pre-Entrance Exam biology practice questions cell structure and function, genetics, and microbiology—designed to help prepare for the biology portion of the RN Pre-Entrance Exam. Each question includes the correct answer and a brief explanation.
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RN - Registered Nurse
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RN - Registered Nurse
RN Pre-Entrance Exam biology practice questions cell structure and function,
genetics, and microbiology—designed to help prepare for the biology portion of the RN
Pre-Entrance Exam. Each question includes the correct answer and a brief explanation.
RN Pre-Entrance Exam biology practice questions cell structure and function,
genetics, and microbiology—designed to help prepare for the biology portion of the RN
Pre-Entrance Exam. Each question includes the correct answer and a brief explanation.
Cell Structure and Function
1. Which organelle is responsible for producing ATP?
o A) Nucleus
o B) Mitochondria
o C) Ribosomes
o D) Endoplasmic reticulum
Answer: B) Mitochondria
Explanation: The mitochondria produce ATP through cellular respiration.
2. Which structure regulates the movement of substances into and out of the cell?
o A) Golgi apparatus
o B) Cell membrane
o C) Nucleus
o D) Lysosome
Answer: B) Cell membrane
Explanation: The cell membrane controls the entry and exit of substances.
3. What is the function of ribosomes?
o A) Lipid synthesis
o B) Protein synthesis
o C) DNA replication
o D) ATP production
Answer: B) Protein synthesis
Explanation: Ribosomes translate mRNA into proteins.
4. Where is genetic material stored in a eukaryotic cell?
o A) Nucleus
o B) Cytoplasm
o C) Golgi body
o D) Endoplasmic reticulum
Answer: A) Nucleus
Explanation: The nucleus houses the cell's DNA.
5. What is the primary function of the smooth endoplasmic reticulum?
o A) Protein folding
o B) Lipid synthesis
o C) DNA storage
o D) Cell division
Answer: B) Lipid synthesis
Explanation: The smooth ER is involved in lipid and hormone production.
6. Which organelle is involved in intracellular digestion?
o A) Lysosome
o B) Golgi apparatus
o C) Ribosome
o D) Nucleolus
Answer: A) Lysosome
Explanation: Lysosomes contain digestive enzymes.
, 7. Which of the following organelles is responsible for packaging proteins for
secretion?
o A) Nucleus
o B) Endoplasmic reticulum
o C) Golgi apparatus
o D) Ribosomes
Answer: C) Golgi apparatus
Explanation: The Golgi apparatus modifies, sorts, and packages proteins.
8. What structure maintains the shape of a plant cell?
o A) Cell wall
o B) Cell membrane
o C) Lysosome
o D) Mitochondria
Answer: A) Cell wall
Explanation: The cell wall provides structural support for plant cells.
9. What is the function of the cytoskeleton?
o A) To generate ATP
o B) To maintain cell shape and allow movement
o C) To synthesize lipids
o D) To package proteins
Answer: B) To maintain cell shape and allow movement
Explanation: The cytoskeleton provides structural support and mobility.
10. Which organelle is associated with the synthesis of proteins that will be exported
from the cell?
o A) Ribosomes on the rough endoplasmic reticulum
o B) Lysosomes
o C) Nucleolus
o D) Smooth endoplasmic reticulum
Answer: A) Ribosomes on the rough endoplasmic reticulum
Explanation: Proteins destined for secretion are synthesized on ribosomes
bound to the rough ER.
11. Which organelle is the site of photosynthesis?
o A) Mitochondria
o B) Chloroplast
o C) Ribosome
o D) Nucleus
Answer: B) Chloroplast
Explanation: Chloroplasts are responsible for photosynthesis in plant cells.
12. Where are ribosomal subunits assembled?
o A) Nucleolus
o B) Nucleus
o C) Cytoplasm
o D) Endoplasmic reticulum
Answer: A) Nucleolus
Explanation: Ribosomal RNA is synthesized and combined with proteins in
the nucleolus.
13. Which of the following organelles is not membrane-bound?
o A) Ribosome
o B) Mitochondria
o C) Endoplasmic reticulum
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