321. Practice check: Which option correctly completes the fact: which organ filters blood to produce urine?
✅ C. Kidney
a: Stomach | b: Lung | c: Kidney | d: Pancreas Read more
Biology MCQs – Page 17
322. Practice check: Which option correctly completes the fact: which molecule carries hereditary information in most organisms?
✅ A. DNA
a: DNA | b: ATP | c: Glucose | d: Cellulose Read more
323. Practice check: Which option correctly completes the fact: which blood type is commonly called the universal red-cell donor in emergency contexts?
✅ A. O negative
a: O negative | b: AB positive | c: B negative | d: A positive Read more
324. Practice check: Which option correctly completes the fact: which organelle is often called the powerhouse of the cell?
✅ C. Mitochondrion
a: Golgi apparatus | b: Lysosome | c: Mitochondrion | d: Ribosome Read more
325. Practice check: In basic biology, which gas is released by plants during photosynthesis?
✅ C. Oxygen
a: Carbon monoxide | b: Methane | c: Oxygen | d: Ammonia Read more
326. Practice check: Which option correctly completes the fact: what is the basic structural and functional unit of life?
✅ D. Cell
a: Organ system | b: Organ | c: Tissue | d: Cell Read more
327. Practice check: In basic biology, which process reduces chromosome number to form gametes?
✅ C. Meiosis
a: Budding | b: Mitosis | c: Meiosis | d: Binary fission Read more
328. Practice check: In basic biology, which plant tissue transports sugars?
✅ D. Phloem
a: Stomata | b: Xylem | c: Cuticle | d: Phloem Read more
329. Practice check: In basic biology, which plant tissue transports water upward?
✅ C. Xylem
a: Cortex only | b: Epidermis | c: Xylem | d: Phloem Read more
330. Practice check: In basic biology, which part of the eye controls the amount of light entering?
✅ C. Iris
a: Optic nerve | b: Retina | c: Iris | d: Cornea only Read more
331. Practice check: In basic biology, which blood component helps form clots?
✅ A. Platelets
a: Platelets | b: Red blood cells | c: Neurons | d: Alveoli Read more
332. Practice check: In basic biology, what is the largest organ of the human body?
✅ A. Skin
a: Skin | b: Liver | c: Brain | d: Lung Read more
333. Practice check: In basic biology, which structure controls what enters and leaves a cell?
✅ A. Cell membrane
a: Cell membrane | b: Nucleolus | c: Chromosome | d: Cell wall only Read more
334. Practice check: In basic biology, which organisms make their own food using sunlight in most ecosystems?
✅ A. Producers
a: Producers | b: Decomposers only | c: Primary consumers | d: Predators Read more
335. Practice check: In basic biology, which molecule is the main immediate energy currency of cells?
✅ D. ATP
a: Starch | b: RNA | c: DNA | d: ATP Read more
336. Practice check: In basic biology, what is the study of insects called?
✅ B. Entomology
a: Mycology | b: Entomology | c: Herpetology | d: Botany Read more
337. Practice check: In basic biology, what is the study of fungi called?
✅ C. Mycology
a: Ornithology | b: Ecology | c: Mycology | d: Entomology Read more
338. Practice check: In basic biology, which organ produces insulin?
✅ D. Pancreas
a: Thyroid | b: Spleen | c: Gallbladder | d: Pancreas Read more
339. Practice check: In basic biology, which part of the brain helps coordinate balance and movement?
✅ B. Cerebellum
a: Medulla only | b: Cerebellum | c: Hypothalamus | d: Pituitary gland Read more
340. Practice check: In basic biology, which biological process produces two genetically similar daughter cells for growth?
✅ A. Mitosis
a: Mitosis | b: Fertilization | c: Transcription | d: Meiosis Read more