A. Vagus nerve
B. Glossopharyngeal nerve
C. Accessory nerve
D. Internal carotid artery
✅ The correct answer is option D. Internal carotid artery.
21. 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.
In humans and other primates as well as in guinea pigs, this vitamin cannot be synthesized because of the absence of the enzyme L-gulonolactone oxidase: the vitamin is_____________?
A. Pantothenic acid
B. Nicotinic acid
C. Ascorbic acid
D. Folic acid
✅ The correct answer is option C. Ascorbic acid.
525. A purine which is found in saliva is_______________?
A. Uric acid
B. Thymine
C. Adenosine
D. Hypolithinium
✅ The correct answer is option C. Adenosine.
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.
548. Cellular cementum is____________?
A. First formed cementum
B. Less calcified than acellular type
C. More calcified than acellular type
D. Less irregular
✅ The correct answer is option B. Less calcified than acellular type.
91. The orbital opening is smoewhat_______________?
A. Quadrangular
B. Oval
C. Oblong
D. Circular
✅ The correct answer is option A. Quadrangular.
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.
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.
528. Calcification of all teeth except last molars are completed by____________?
A. 2 years
B. 4 years
C. 6 years
D. 8 years
✅ The correct answer is option D. 8 years.