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