Past GDMO Exam MCQs with Answers
Welcome to your premier online resource for mastering the initial tests required for medical exams in the Army, Navy, and Air Force, including the General Duty Medical Officer (GDMO) tests, Armed Forces Nursing Service (AFNS), Field Medical Assistant (FMA), and Field Medical Technician (FMT) exams. Our platform is dedicated to providing comprehensive, freely accessible MCQs and study materials designed specifically for aspiring officers aiming to excel in their academic assessments and embark on a prestigious career as a Captain in the medical services.
Dive into our extensive database of practice questions and expert guidance to ensure your preparation is thorough, strategic, and tailored to the unique challenges of military medical exams.
Related: How to Become a Captain in Pak Army as GDMO?
GDMO Exam MCQs Overview: What to Expect
Q. What component of the cell membrane is primarily responsible for the membrane’s fluid nature?
A) Cholesterol
B) Glycoproteins
C) Phospholipids
D) Transport proteins
Correct Answer: C) Phospholipids
Q. Which organelle is known as the ‘powerhouse of the cell’ and is responsible for producing energy?
A) Golgi apparatus
B) Lysosome
C) Mitochondrion
D) Endoplasmic reticulum
Correct Answer: C) Mitochondrion
Q. What is the function of ribosomes in a cell?
A) Synthesizing lipids
B) Breaking down waste materials
C) Synthesizing proteins
D) Packaging proteins for secretion
Correct Answer: C) Synthesizing proteins
Q. The nucleus of a cell functions in:
A) Storing the cell’s hereditary material
B) Producing energy (ATP)
C) Detoxifying harmful substances
D) Digesting food particles
Correct Answer: A) Storing the cell’s hereditary material
Q. Which structure within the cell is primarily responsible for organizing proteins and lipids into vesicles for transport?
A) Mitochondria
B) Golgi apparatus
C) Nucleus
D) Ribosomes
Correct Answer: B) Golgi apparatus
Q. What is the primary role of the smooth endoplasmic reticulum?
A) Protein synthesis
B) Lipid metabolism
C) DNA replication
D) ATP production
Correct Answer: B) Lipid metabolism
Q. Cell walls are NOT found in the cells of:
A) Bacteria
B) Plants
C) Animals
D) Fungi
Correct Answer: C) Animals
Q. What part of a cell is responsible for breaking down and recycling cellular debris?
A) Lysosomes
B) Peroxisomes
C) Ribosomes
D) Golgi apparatus
Correct Answer: A) Lysosomes
Q. Centrioles are most closely associated with:
A) Cellular respiration
B) Protein synthesis
C) DNA replication
D) Cell division
Correct Answer: D) Cell division
Q. Which of the following is a function of the plasma membrane?
A) Synthesizing ribosomes
B) Regulating transport of materials into and out of the cell
C) Producing ATP
D) Encapsulating organelles
Correct Answer: B) Regulating transport of materials into and out of the cell
Q. Chloroplasts are necessary for:
A) Photosynthesis
B) Respiration
C) Digestion
D) Excretion
Correct Answer: A) Photosynthesis
Q. The primary function of the nucleolus is:
A) Detoxification
B) Ribosome production
C) Lipid synthesis
D) Mitosis
Correct Answer: B) Ribosome production
Q. Which organelle is involved in the catabolism of fatty acids and the detoxification of alcohol?
A) Golgi apparatus
B) Lysosome
C) Peroxisome
D) Mitochondrion
Correct Answer: C) Peroxisome
Q. Microtubules are composed primarily of:
A) Actin
B) Myosin
C) Tubulin
D) Keratin
Correct Answer: C) Tubulin
Mastering GDMO Exam MCQs
Q. The main component of the extracellular matrix in animal cells is:
A) Collagen
B) Hemoglobin
C) Chitin
D) Cellulose
Correct Answer: A) Collagen
Q. Which of these cell junctions form a barrier to the passage of materials between animal cells?
A) Gap junctions
B) Tight junctions
C) Desmosomes
D) Plasmodesmata
Correct Answer: B) Tight junctions
Q. The packaging and distribution center of the cell is the:
A) Ribosome
B) Endoplasmic reticulum
C) Golgi apparatus
D) Mitochondrion
Correct Answer: C) Golgi apparatus
Q. Which type of organelle is primarily involved in the synthesis of oils, phospholipids, and steroids?
A) Rough ER
B) Smooth ER
C) Lysosomes
D) Ribosomes
Correct Answer: B) Smooth ER
Q. What is the gel-like substance inside the cell called?
A) Plasma
B) Cytoplasm
C) Nucleoplasm
D) Extracellular matrix
Correct Answer: B) Cytoplasm
Q. Which organelle contains enzymes that can digest proteins, fats, and carbohydrates?
A) Golgi apparatus
B) Lysosome
C) Mitochondrion
D) Nucleus
Correct Answer: B) Lysosome
Q. The stiff structure that surrounds the plant cell and gives it support is the:
A) Cell membrane
B) Cell wall
C) Chloroplast
D) Vacuole
Correct Answer: B) Cell wall
Q. Actin filaments are a major component of:
A) The cytoskeleton
B) The nucleus
C) The endoplasmic reticulum
D) The mitochondria
Correct Answer: A) The cytoskeleton
Q. Which organelle plays a role in intracellular digestion?
A) The Golgi apparatus
B) The lysosome
C) The peroxisome
D) The ribosome
Correct Answer: B) Lysosome
Q. What is the primary site of ATP synthesis in eukaryotic cells?
A) Chloroplast
B) Mitochondrion
C) Nucleus
D) Ribosome
Correct Answer: B) Mitochondrion
Q: Which part of the cell is responsible for modifying and sorting proteins and lipids?
A) Golgi apparatus
B) Nucleus
C) Lysosome
D) Endoplasmic reticulum
Correct Answer: A) Golgi apparatus
Q: What is primarily responsible for the shape and movement of a cell?
A) Mitochondria
B) Cytoskeleton
C) Nucleus
D) Cell membrane
Correct Answer: B) Cytoskeleton
Q: Where are ribosomal RNA and proteins assembled into ribosomal subunits?
A) Nucleolus
B) Nucleus
C) Ribosomes
D) Endoplasmic reticulum
Correct Answer: A) Nucleolus
Q: Which cellular structure is involved in processing and packaging proteins?
A) Chloroplast
B) Golgi apparatus
C) Mitochondrion
D) Lysosome
Correct Answer: B) Golgi apparatus
Q: What type of cell junction allows the passage of ions and small molecules between cells?
A) Tight junctions
B) Desmosomes
C) Gap junctions
D) Hemidesmosomes
Correct Answer: C) Gap junctions
GDMO Exam MCQs: Sample Questions and Answers
Q: Which organelle is responsible for detoxifying multiple substances?
A) Lysosome
B) Peroxisome
C) Golgi apparatus
D) Mitochondrion
Correct Answer: B) Peroxisome
Q: What structure acts as a selective barrier, regulating the traffic of materials in and out of the cell?
A) Cell wall
B) Mitochondrial membrane
C) Plasma membrane
D) Nuclear envelope
Correct Answer: C) Plasma membrane
Q: Which organelle is the site of cellular respiration and energy production in plant cells?
A) Chloroplast
B) Mitochondrion
C) Golgi apparatus
D) Peroxisome
Correct Answer: B) Mitochondrion
Q: Which structure is directly involved in the synthesis of proteins that will be exported from the cell?
A) Rough endoplasmic reticulum
B) Smooth endoplasmic reticulum
C) Golgi apparatus
D) Lysosomes
Correct Answer: A) Rough endoplasmic reticulum
Q: What organelle is known for storing DNA and coordinating cell activities such as growth and reproduction?
A) Mitochondrion
B) Nucleus
C) Ribosome
D) Endoplasmic reticulum
Correct Answer: B) Nucleus
Q: In plant cells, what is the large organelle that stores water and helps maintain turgor pressure?
A) Chloroplast
B) Mitochondrion
C) Vacuole
D) Lysosome
Correct Answer: C) Vacuole
Q: Which organelle contains its own DNA and ribosomes, similar to bacteria?
A) Golgi apparatus
B) Nucleus
C) Mitochondrion
D) Endoplasmic reticulum
Correct Answer: C) Mitochondrion
Q: What cellular component is composed of microtubules and is involved in cell division?
A) Nucleolus
B) Centrosome
C) Ribosome
D) Peroxisome
Correct Answer: B) Centrosome
Q: Which organelle is primarily involved in the synthesis of fatty acids and steroids?
A) Rough ER
B) Smooth ER
C) Golgi apparatus
D) Lysosome
Correct Answer: B) Smooth ER
Q: What structure is involved in protein sorting and shipping?
A) Golgi apparatus
B) Mitochondria
C) Lysosome
D) Peroxisome
Correct Answer: A) Golgi apparatus
Q: Which of the following is NOT found in animal cells?
A) Mitochondria
B) Cell wall
C) Golgi apparatus
D) Ribosomes
Correct Answer: B) Cell wall
Q: What cellular structure is primarily made of cellulose in plants?
A) Cell wall
B) Plasma membrane
C) Golgi apparatus
D) Chloroplast
Correct Answer: A) Cell wall
Q: Which organelle plays a crucial role in autophagy?
A) Golgi apparatus
B) Mitochondrion
C) Lysosome
D) Endoplasmic reticulum
Correct Answer: C) Lysosome
GDMO Exam Preparation: Best Resources for MCQs
Q: What is the main function of plasmodesmata in plant cells?
A) Protein synthesis
B) Cellular respiration
C) Communication between cells
D) Photosynthesis
Correct Answer: C) Communication between cells
Q: Which cell component is responsible for degrading obsolete parts of the cell?
A) Lysosome
B) Nucleus
C) Ribosome
D) Golgi apparatus
Correct Answer: A) Lysosome
Q: Which of the following organelles is primarily responsible for the generation of ATP in photosynthetic cells?
A) Chloroplast
B) Mitochondrion
C) Nucleus
D) Ribosome
Correct Answer: A) Chloroplast
Q: What is the primary function of the cytoskeleton in a cell?
A) ATP synthesis
B) Protein synthesis
C) Structural support and motility
D) Digestion of cellular waste
Correct Answer: C) Structural support and motility
Q: Which cellular structure is important for protein synthesis in prokaryotes and eukaryotes?
A) Golgi apparatus
B) Ribosome
C) Mitochondrion
D) Peroxisome
Correct Answer: B) Ribosome
Q: What component of the cell membrane acts as a gatekeeper to regulate ion passage in and out of the cell?
A) Cholesterol
B) Glycoproteins
C) Phospholipids
D) Transport proteins
Correct Answer: D) Transport proteins
Q: Which structure ensures genetic material is distributed equally to daughter cells during mitosis?
A) Nucleolus
B) Centrosome
C) Golgi apparatus
D) Lysosome
Correct Answer: B) Centrosome
Q: What type of endoplasmic reticulum is involved in detoxifying harmful substances in liver cells?
A) Rough ER
B) Smooth ER
C) Golgi apparatus
D) Lysosome
Correct Answer: B) Smooth ER
Q: What organelle is especially abundant in cells that secrete hormones?
A) Ribosome
B) Lysosome
C) Golgi apparatus
D) Mitochondrion
Correct Answer: C) Golgi apparatus
Q: Which cellular component is responsible for modifying, sorting, and packaging proteins and lipids for secretion or use within the cell?
A) Chloroplast
B) Golgi apparatus
C) Mitochondrion
D) Ribosome
Correct Answer: B) Golgi apparatus
Q: Which organelle is the primary site of ATP production in eukaryotic cells?
A) Chloroplast
B) Mitochondrion
C) Nucleus
D) Endoplasmic reticulum
Correct Answer: B) Mitochondrion
Q: What structure is responsible for cell division in animal cells?
A) Golgi apparatus
B) Lysosome
C) Centriole
D) Mitochondrion
Correct Answer: C) Centriole
Q: Which part of a cell’s structure acts as the control center, housing the DNA?
A) Chloroplast
B) Mitochondrion
C) Nucleus
D) Endoplasmic reticulum
Correct Answer: C) Nucleus
Q: What is the function of vacuoles in plant cells?
A) Protein synthesis
B) ATP synthesis
C) Storing nutrients and waste products
D) Modifying proteins
Correct Answer: C) Storing nutrients and waste products
Q: Which organelle is primarily involved in the synthesis of proteins that will be secreted by the cell?
A) Smooth ER
B) Rough ER
C) Golgi apparatus
D) Lysosome
Correct Answer: B) Rough ER
Frequent Patterns in GDMO Exam MCQs
Q: What kind of cell junction forms a waterproof seal between cells?
A) Tight junctions
B) Desmosomes
C) Gap junctions
D) Plasmodesmata
Correct Answer: A) Tight junctions
Q: Which organelle is known for breaking down excess or worn-out cell parts?
A) Golgi apparatus
B) Lysosome
C) Ribosome
D) Endoplasmic reticulum
Correct Answer: B) Lysosome
Q: What is the function of microtubules in a cell?
A) Cellular respiration
B) Structural integrity
C) Movement of chromosomes during cell division
D) Synthesis of ATP
Correct Answer: C) Movement of chromosomes during cell division
Q: Which of these structures is involved in modifying and packaging secretory proteins?
A) Nucleus
B) Ribosome
C) Golgi apparatus
D) Smooth ER
Correct Answer: C) Golgi apparatus
Q: In what part of the cell does glycolysis occur?
A) Mitochondria
B) Nucleus
C) Cytoplasm
D) Golgi apparatus
Correct Answer: C) Cytoplasm
Q: What organelle is particularly large in cells that store carbohydrates?
A) Golgi apparatus
B) Lysosome
C) Vacuole
D) Nucleus
Correct Answer: C) Vacuole
Q: What cellular structure is composed primarily of cellulose in plant cells?
A) Cell membrane
B) Cell wall
C) Mitochondrion
D) Chloroplast
Correct Answer: B) Cell wall
You May Like More MCQs through Online Practice
Sentry Intelligence 2026
Scan for patterns and acquire mental dominance for the 2026 screening. Access verified Verbal and Non-Verbal reasoning banks for Pakistan Army, Navy, and PAF officer selection.
Army Navy PAF Success Hub
The 2026 surveillance core for military preparation. Download high-definition PDF past papers and master ISSB and Cadet College entrance exams with tactical focus.
