medical MCQs – Page 180

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

3581. Which statement is correct about decidous dentition?
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A. The crowns of primary dentition are more yellowish than permanent

B. The primary dentition is initiated at 10<sup>th</sup> month in uterus

C. Calcification of maxillary primary first premolar is completed at birth

D. Mandibular first molar erupts at one and half years of age
3582. The first evidence of calcification of primary anterior teeth begins approximately between ______________?
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A. 17 to 20 weeks in utero

B. 14 to 17 weeks in utero

C. 9 to 12 weeks in utero

D. 6- to 9 weeks in utero

3583. Which of the following is inclusion of cytoplasm ?
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A. Glycogen

B. Golgi body

C. Endoplasmic reticulum

D. Ribosome

3584. Among the difference between teeth in the decidous and the permanent dentition is that_____________?
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A. Buccal surfaces of the permanent molars are flatter

B. Root trunks of decidous teeth are larger compared with their overall root lengths

C. Crowns of decidous incisors are wider mesiodistally than their cervico incisal lengths

D. Cervical ridges are more pronounced in permanent molars

3585. Which of the following gives the best description of erupted permanent teeth typically seen in a 9- years old______________?
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A. All teeth except third molars

B. 1,2,4,5,6,7 in all quadrants

C. 1,2,6 in all quadrants

D. Only molars

3586. The primary lateral incisors begin to calcify about the_____________?
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A. 41/2 month in utero

B. 4th month in utero

C. 5th month in utero

D. 4th month of life

3587. The lipoprotein particles that have the highest percentage concentration of cholesterol is_______________?
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A. LDL (Low density lipoprotein)

B. VLDL (Very low density lipoprotein)

C. HDL (High density lipoprotein)

D. Chylomicron

3588. Fatty aids help in synthesis of all except____________?
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A. Fat

B. Cholesterol

C. Ketone bodies

D. Glucose
3589. In the majority of situations, the first decidous tooth to erupt is the______________?
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A. Mandibular first molar

B. Maxillary central incisor

C. Maxillary second molar

D. Mandibular central incisor
3590. Alkaptonuria an inherited metabolic disorder is due to the deficiency of____________?
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A. Cystathionase

B. Tyrosine transaminase

C. Pheylalanine hydroxylase

D. Homogentisate oxidase
3591. Cell membrane consists of_________________?
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A. Lipids and proteins

B. Lipids only

C. None of the above

D. Protein only

3592. Transverse ridge is prominent on occlusal surface of which of the following decidous teeth ?
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A. Maxillary second molar

B. Mandibular second molar

C. Maxillary first molar

D. Mandibular first molar
3593. In ECF main electrolyte is_______________?
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A. Cl

B. K+

C. Na+

D. Proteins

3594. Which of the following is the best site of absorption of calcium ?
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A. Middle segment of small intestine

B. Ascending colon

C. Ileum

D. Proximal segment of small intestine
3595. Eruption date of decidous maxillary 2nd molar is ______________?
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A. 24 months

B. 18 months

C. 20 months

D. 28 months
3596. The sharpest cusp of primary first molar tooth is____________?
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A. Mesiobuccal

B. Distobuccal

C. Distolingual

D. Mesiolingual
3597. The crowns and roots of primary molar at their cervical portions are more____________?
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A. Buliker anteroposteriorly

B. Bulkier mesiodistally

C. Slender mesiodistally

D. Slender anteroposteriorly

3598. Acetyl CoA is produced from which fuel sources_____________?
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A. Carbohydrate

B. Amino acids

C. All of the above

D. Lipid

3599. Unsaturated fatty acids are converted to______________?
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A. Cell membrane lipid

B. Saturated fatty acid

C. Cholesterol

D. Prostaglandins
3600. The pulp of first primary molar contains________________?
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A. Two pulp horn and three root canal

B. Four pulp horn and three root canal

C. Three pulp horn and three root canal

D. Two pulp horn and two root canal