551. A mutation that converts an amino acid codon to a stop codon is a_____________?
A. Nonsense mutation
B. Transversion
C. Silent mutation
D. Frame shift mutation
✅ The correct answer is option A. Nonsense mutation.
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.
552. Which of the following is true about calcification of teeth ?
A. Calcification of primary teeth is almost complete at time of birth
B. Calcification of all primary teeth and few permanent teeth complete at birth
C. Calcification of all permanent teeth complete at birth
D. Calcification of primary teeth starts around birth
✅ The correct answer is option A. Calcification of primary teeth is almost complete at time of birth.
553. End product of purine metabolism is______________?
A. Creatinine
B. Uric acid
C. Xanthine
D. Phosphates
✅ The correct answer is option B. Uric acid.
554. Injury to which nerve will affect lacrimal secretion______________?
A. Greater petrosal nerve
B. Lesser petrosal nerve
C. Sphenopalatine nerve
D. Nasocilliary nerve
✅ The correct answer is option A. Greater petrosal nerve.
555. Adrenal gland has two parts; cortex and medulla. Which of the following is correct______________?
A. Cortex is under the control of ACTH
B. Both cortex and medulla are under the control of autonomic nervous system
C. Cortex is exocrine and medulla is endocrine
D. All of the above
✅ The correct answer is option A. Cortex is under the control of ACTH.
556. Pepsinogen is activated by ___________________ ?
A. Enterokinase
B. Low pH
C. Trypsin
D. Chymotrypsin
✅ The correct answer is option B. Low pH.
557. Pneumatic bones is all except ?
A. Mastoid
B. Mandible
C. Maxilla
D. Ethmoid
✅ The correct answer is option B. Mandible.
558. Electromyography is used for________________?
A. To study muscle activity
B. Determine class II malocclusion
C. Determine the centric relation
D. Determine the centric occlusion
✅ The correct answer is option A. To study muscle activity.
559. Restriction endonuclease cleaves______________?
A. Double stranded DNA
B. SIngle stranded DNA
C. SIngle stranded RNA
D. Polypeptide
✅ The correct answer is option A. Double stranded DNA.
560. Type of receptor present on T-cells are__________________?
A. Ig A
B. Ig G
C. Prostaglandins
D. CD4
✅ The correct answer is option CD4.