531. The size of apical foramen of maxillary teeth in adult is______________?
A. 0.4 mm
B. 0.3 mm
C. 0.2 mm
D. 0.7 mm
✅ The correct answer is option A. 0.4 mm.
Medical
Prepare effectively with the latest Medical MCQs with answers and explanations for exams, interviews, and job tests. Our collection covers anatomy, physiology, biochemistry, pharmacology, pathology, microbiology, forensic medicine, community medicine, and clinical skills. These Medical multiple-choice questions are designed for students, medical aspirants, and professionals preparing for NTS, PPSC, FPSC, CSS, PMS, medical entrance exams, and recruitment assessments. Strengthen your medical knowledge, improve problem-solving skills, and score higher with our updated Medical MCQs.
532. Detoxification of drugs is controlled by_____________?
A. Cytochrome
B. Cytochrome P450
C. Cytochrome C
D. Cytochrome A
✅ The correct answer is option B. Cytochrome P450.
533. Km of an enzyme is_____________?
A. Dissociation constant
B. The normal physiological substrate concentration
C. Substrate concentration at half maximal velocity
D. Numerically identical for all isozymes that catalyses a given reaction
✅ The correct answer is option C. Substrate concentration at half maximal velocity.
534. Which of the following is the main constituent of porcelain__________________?
A. Feldspar
B. Kaolin
C. Quartz
D. Clay
✅ The correct answer is option A. Feldspar.
535. Cells of the spinous layer are generally_______________?
A. Larger than the basal cells
B. Smaller than the basal cells
C. same size as that of basal cells
D. None of the above
✅ The correct answer is option A. Larger than the basal cells.
536. Both Vitamin K and C are involved in______________?
A. The synthesis of clotting factors
B. Post translational modifications
C. Antioxidant mechanisms
D. The microsomal hydroxylation reactions
✅ The correct answer is option B. Post translational modifications.
537. Gastrin is produced by _____________?
A. Pancreas
B. Gastric antral cells
C. Pituitary
D. All
✅ The correct answer is option D. All.
538. Insulin increases the activity of___________?
A. HMG. CoA reductase
B. HMG- CoA lyase
C. HMG- CoA synthase
D. Thiolase
✅ The correct answer is option A. HMG. CoA reductase.
539. Which structure does not pass through the jugular foramen ?
A. Vagus nerve
B. Glossopharyngeal nerve
C. Accessory nerve
D. Internal carotid artery
✅ The correct answer is option D. Internal carotid artery.
540. The class of amino acids that contains only non essential amino acids is_______________?
A. Acidic
B. Basic
C. Aromatic
D. Branched chain
✅ The correct answer is option A. Acidic.