MCQ Collection Pakistan MCQs Practice Pakistan questions with answers and explanations.
Choose an option to check your answer.
A. Cellulose B. Chitin C. Glucose D. Glycogen
Show Answer Correct Answer: C. Glucose
Explanation: Glucose is oxidized during cellular respiration.
Choose an option to check your answer.
A. A structural polysaccharide in plants B. A protein hormone C. A membrane lipid D. A glucose-storage polysaccharide in animals
Show Answer Correct Answer: D. A glucose-storage polysaccharide in animals
Explanation: Glycogen is stored mainly in liver and muscle.
Choose an option to check your answer.
A. Presence of DNA B. Presence of ribosomes C. Presence of a plasma membrane D. Membrane-bound nucleus
Show Answer Correct Answer: D. Membrane-bound nucleus
Explanation: Both cell types have DNA, ribosomes, and membranes.
Choose an option to check your answer.
A. Region containing the chromosome in a prokaryotic cell B. A membrane-bound nucleus C. A protein-making organelle D. A bacterial vacuole
Show Answer Correct Answer: A. Region containing the chromosome in a prokaryotic cell
Explanation: The nucleoid is not enclosed by a nuclear membrane.
Choose an option to check your answer.
A. Protein capsules B. Small independently replicating DNA molecules in many bacteria C. Cell-wall layers D. Ribosomal subunits
Show Answer Correct Answer: B. Small independently replicating DNA molecules in many bacteria
Explanation: Plasmids often carry accessory genes such as antibiotic resistance.
Choose an option to check your answer.
A. Loss of all genetic material B. Formation of identical cell types only C. Development of structures and functions suited to a particular role D. Random movement of cells
Show Answer Correct Answer: C. Development of structures and functions suited to a particular role
Explanation: Different genes are expressed in different cell types.
Choose an option to check your answer.
A. Small cells contain no DNA B. Large cells cannot make proteins C. Cell membranes function only below one micrometer D. A high surface-area-to-volume ratio supports efficient exchange
Show Answer Correct Answer: D. A high surface-area-to-volume ratio supports efficient exchange
Explanation: As a cell grows, volume increases faster than surface area.
Choose an option to check your answer.
A. Carbohydrates, lipids, proteins, and nucleic acids B. Vitamins, minerals, water, and salts C. Atoms, ions, tissues, and organs D. Sugars, acids, bases, and gases
Show Answer Correct Answer: A. Carbohydrates, lipids, proteins, and nucleic acids
Explanation: The four major macromolecule groups perform structural, energetic, catalytic, and informational roles.
Choose an option to check your answer.
A. A fully formed organ B. A small building block that can join to form a polymer C. A type of lipid only D. A mineral ion
Show Answer Correct Answer: B. A small building block that can join to form a polymer
Explanation: Monomers link through covalent bonds.
Choose an option to check your answer.
A. Breaking a bond by adding water B. Removal of oxygen from a molecule C. Formation of a bond by removal of water D. Formation of ATP only
Show Answer Correct Answer: C. Formation of a bond by removal of water
Explanation: Dehydration reactions join monomers into larger molecules.
Choose an option to check your answer.
A. Plant and animal cells B. Fungal and animal cells C. Bacterial and archaeal cells D. Only plant cells
Show Answer Correct Answer: C. Bacterial and archaeal cells
Explanation: Prokaryotes lack a membrane-bound nucleus.
Choose an option to check your answer.
A. Uptake of solid particles B. Movement of water C. Transport through ion channels D. Release of material when vesicles fuse with the plasma membrane
Show Answer Correct Answer: D. Release of material when vesicles fuse with the plasma membrane
Explanation: Exocytosis secretes hormones, enzymes, and neurotransmitters.
