A. Retinol
B. Retinal
C. Retinoic acid
D. All of the above
✅ The correct answer is option D. All of the above.
19. At high altitudes the following changes takes place except_______________?
A. Increase in respiratory rate
B. Increases in depth of respiration
C. Increase in oxygen carrying capacity of blood
D. Increase in partial pressure of CO2
✅ The correct answer is option D. Increase in partial pressure of CO2.
6. The period of embryo extends_______________?
A. From the end of first week till the eight week
B. from the period of ovum till the tenth week
C. From oogenesis till the eight week
D. From fertilization till the eight week
✅ The correct answer is option D. From fertilization till the eight week.
13. Gubernacular canal and gubernacular cord are seen in relation to____________?
A. Permanent teeth
B. Deciduous teeth
C. Succedaneous teeth
D. None of the above
✅ The correct answer is option C. Succedaneous teeth.
5. Basal lamina of blood vessel in CNS is secreted by______________?
A. Endothelial cells
B. Oligodendrocytes
C. Microglia
D. Astrocytes
✅ The correct answer is option B. Oligodendrocytes.
Which of the following is not a product of HMP shunt_____________?
A. NADPH
B. D fructose 6 phosphate
C. D sedoheptulose 5 phosphate
D. D glyceraldehyde 3 phosphate
✅ The correct answer is option C. D sedoheptulose 5 phosphate.
Rate limiting step in adrenaline synthesis is conversion of____________?
A. Tyrosine to dopa
B. Phenylalanine to tyrosine
C. Dopa to dopamine
D. Dopamine to nor epinephrine
✅ The correct answer is option A. Tyrosine to dopa.
4. Highest point on skull_____________?
A. Pterion
B. Porion
C. Lambda
D. Vertex
✅ The correct answer is option D. Vertex.
1. High copper dental amalgams are superior to other amalgams because high copper dental amalgems______________?
A. Have less marginal breakdown
B. Are workable at lower Hg-alloy ratio
C. Have a higher ratio of tensile to compressive strength
D. Have less resistance to tarnish and corrosion
✅ The correct answer is option A. Have less marginal breakdown.
37. Which teeth the proximal aspect shows rhomboidal appearance________________?
A. Maxillary posteriors
B. Mandibular posteriors
C. Maxillary anteriors
D. Mandibular anteriors
✅ The correct answer is option B. Mandibular posteriors.