MCQs Biology-29 Posted on December 10, 2025December 10, 2025Author agropublishers 0 Table of Contents Toggle MCQs Biology-29Multiple Choice QuestionsMCQs Biology-29 MCQs Biology-29 Multiple Choice Questions 1. The lower esophageal sphincter is a ring of muscle at the junction of the esophagus and the stomach, which prevents ————— Entry of air into the esophagus Backflow of gastric contents Passage of food into the trachea Absorption of nutrients 2. _____________ is the specific enzyme that catalyzes the hydrolysis (breakdown) of the disaccharide sucrose into its constituent monosaccharides: glucose and fructose Urease Lipase Invertase Trypsin 3. Which of the following treatments is commonly administered to patients diagnosed with cancer? Radiotherapy Gene therapy Antibiotic therapy All of these 4. In most fungi and higher plants, somatic cells lack which organelle? Mitochondrion Centriole Ribosome Golgi body 5. Which enzyme works optimally at an alkaline pH (around 8)? Invertase Pepsin Trypsin Amylase 6. Which of the following enzymes is present in human saliva? Trypsin Ptyalin Lipase Invertase 7. The primary mechanism by which cells synthesize ATP during oxidative phosphorylation and photophosphorylation is _____________? Phosphorylation Chemosynthesis Chemiosmosis Photosynthesis 8. Glycogen is a ———— Polysaccharide Disaccharide Monosaccharide Lipid 9. Nitrogen is an essential component of which of the following biomolecules? Carbohydrates Lipids Proteins Carbonates 10. Chinese population has a higher fertility rate than the Indian people True False Loading … Question 1 of 10 MCQs Biology-29
