3501. Merkel cells are found in which of the following tissue ______________?
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A. Reticular of dermis

B. Hypodermis

C. Papillary layer of dermis

D. Epidermis
3502. Which of the following is correctly matched ?
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A. Succinate to furmarate -1 ATP is formed

B. Malate to oxaloacetate -1 ATP is formed

C. Isocitrate to oxalo succinate -1 ATP is formed

D. Succinyl CoA to succinate -1 ATP is formed
3503. Insulin acts on which enzyme in glycolysis ?
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A. Hexokinase

B. Adenylate kinase

C. Glucose 6 phosphatase

D. Glucokinase
3504. Bilirubin is produced from________________?
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A. Myoglobin

B. Haemoglobin

C. Gall bladder

D. A & B
3505. All of the following are substrates for gluconeogenesis except_______________?
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A. Glycerol

B. Oleic acid

C. Tryptophan

D. Alanine

3506. Osteoblasts appear basic gram staining due to______________?
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A. Acidic ground substance

B. Increased ribonucleic acid

C. Presence of basic ground substance

D. Increased mitochondria

3507. What is the thickness of the layer of primsless enamel found in primary teeth_____________?
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A. 50?m

B. 75?m

C. 25 ?m

D. 100?m

3508. Which of the following decidous molars bears the greatest resemblance to a premolar _____________?
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A. Maxillary second

B. Maxillary first

C. Mandibular first

D. Mandibular second

3509. Pulp chambers and roots canals in decidous teeth______________?
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A. Shallow and wide

B. Wide and narrow

C. Wide and deep

D. Shallow and narrow

3510. Fatty acid oxidation occurs in______________?
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A. Microsomes

B. Cytoplasm

C. All of the above

D. Mitochondria
3511. The normal value of serum potassium level is____________?
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A. 5-5.8 meq/L

B. 2.8-3.8 meq/L

C. 3.8-5 meq/L

D. 6-7.2 meq/L

3512. Lipid is required in the average diet because it________________?
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A. has a high caloric value

B. Provides essential fatty acid

C. aids in absorption of carbohydrates

D. is necessary for storage of carbohydrates

3513. In human body which of the following trace element is next to iron_______________?
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A. Ca++

B. Selenium

C. Zn++

D. Cu++

3514. The protein rich in basic amino acids, which functions in the packaging of DNA is chromosomes is______________?
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A. Hyaluronic acid binding protein

B. Collagen

C. Histone

D. Fibrinogen

3515. During phagocytosis the metabolic process called respiratory burst involves activation of_____________?
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A. Peroxidase

B. Oxidase

C. Dehydrogenase

D. Hydrolase

3516. Highest binding of iron in plasma is seen with___________?
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A. Transferrin

B. Ferritin

C. Hemoglobin

D. Ceruloplasmin

3517. Nor epinephrine is converted to epinephrine by______________?
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A. N-methylation

B. Dopamine hydroxylase

C. Dopa decarboxylase

D. O-methylation

3518. Increase in lactate and pyruvate is seen in deficiency of_____________?
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A. Retinotic acid

B. Pyridoxin

C. Niacin

D. Thiamine
3519. The highest ( longest ) and sharpest cusp on the decidous mandibular first molar is____________?
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A. Distolingual

B. Mesiobuccal

C. Mesiolingual

D. Distobuccal

3520. Peroxidase enzyme contain______________?
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A. Chromium

B. Calcium

C. Magnesium

D. Selenium
3521. In Niemann-Picks disease the following substrance accumulate in CNS in excess______________?
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A. Glycerosphingosides

B. Glycerophosphatides

C. Phosphoinositides

D. Phosphosphingosides
3522. Beginning of eruption of permanent tooth starts_____________?
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A. when root formation starts

B. When apical third root is still to be formed

C. When half of the root is still to be formed

D. After completion of root

3523. Which of these organelle functions as the digestive system of the cell ?
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A. Lysomes

B. Golgi apparatus

C. Rough endoplasmic reticulum

D. Mitochondria

3524. Which of the following is true about calcification of teeth ?
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A. Calcification of all permanent teeth complete at birth

B. Calcification of all primary teeth and few permanent teeth complete at birth

C. Calcification of primary teeth is almost complete at time of birth

D. Calcification of primary teeth starts around birth

3525. During phagocytosis, the metabolic process called respiratory burst involves the activation of_____________?
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A. Dehydrogenase

B. Hydrolase

C. Oxidase

D. Peroxidase

3526. Which is the poorest source of calcium among the following______________?
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A. Rice

B. Cows milk

C. Egg yolk

D. Human milk

3527. The largest mesiodistal diameter in primary dentition is____________?
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A. Mandibular2nd molar

B. Mandibular 1st molar

C. Maxillary 2nd molar

D. None of the above

3528. Which of the organelles contain DNA_________________?
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A. Ribsomes

B. Golgi apparatus

C. Nucleolus

D. Nucleus
3529. Which of the following is a phospholipid________________?
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A. Prostaglandin

B. Glycogen

C. Sphingomyelin

D. Oleic acid

3530. Normal blood PH is______________?
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A. 7.7 8.0

B. 7.38 7.4

C. 6.8 7.0

D. 7.0 7.12

3531. Which one of the following human tissues contains the greatest amount of body glycogen ?
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A. Kidney

B. Cardiac muscle

C. Liver

D. Skeletal muscle
3532. A relatively component of the electron transporting respiratory chain is_____________?
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A. Flavoprotein

B. Ubiquinone

C. Cytochrome Cl

D. Cytochrome A

3533. Dentition of humans is_______________?
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A. Omnivorous

B. None of the above

C. Herbivorous

D. Carnivorous

3534. Which of the following is not a ketone body______________?
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A. Beta hydroxybutyric acid

B. Acetone

C. Acetocetate

D. Acetic acid
3535. Limiting factory for fatty acid synthesis_________________?
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A. Aceto acetate synthetase

B. Acyl transferase

C. Biotin

D. Acetyl CoA carboxylase
3536. Difference between primary and permanent enamel is_______________?
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A. No difference in enamel, difference in dentin

B. in mineral content

C. None of the above

D. In prism arrangement
3537. In molecular cloning, Blue White screening is used for_______________?
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A. To screen for recombinant vectors

B. To detect gene mutations

C. To identify desired chromosomal DNA insert in plasmid vectors

D. To detect host DNA in situ

3538. Rate limiting step in cholesterol synthesis is_______________?
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A. HMG CoA lyase

B. Mevalonate synthetase

C. HMG CoA synthetase

D. HMG CoA reductase
3539. The most common sequence of eruption of the permanent maxillary teeth in children is_______________?
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A. 2-3-1-6-7-5-4-8

B. 6-1-2-3-4-5-7-8

C. 6-1-2-4-3-5-7-8

D. 1-6-2-3-4-7-5-8

3540. Bile acids are formed from__________?
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A. Aminoacids

B. Lipoproteins

C. Bilirubin

D. Cholesterol
3541. Which of the following is precursor of adrenaline and thyroxine synthesis ?
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A. Phenyl alanine

B. Tyrosine

C. Tryptophan

D. None of the above

3542. A child has 12 permanent and 12 decidous teeth, what is his age____________?
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A. 13 years

B. 11 years

C. 8 years

D. 4 years

3543. First permanent molars begin to calcify at ______________?
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A. Before decidous incisors

B. 6 months of intra utrerine life

C. About 1 year after birth

D. At birth
3544. Daily requirement of iron in man is_____________?
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A. 20 mg

B. 1gm

C. 10 mg

D. 10 microgram

3545. Which of the following has a ketogenic effect on livers______________?
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A. GH

B. Androgen

C. Glucagon

D. Insulin

3546. Which of the following is not a second messenger ?
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A. c GMP

B. Phosphatidyl inosital

C. Phosphatidyl glycerol

D. c AMP

3547. Thyroxine and catecholamines are derived from_____________?
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A. Tryptophan

B. Leucine

C. Tyrosine

D. Alanine

3548. HMG-CoA is formed during metabolism of all except______________?
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A. Leucine

B. Cholesterol

C. Bile acids

D. Ketone bodies

3549. Fat provides ______% of bodys calories?
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A. 30%

B. 50%

C. 40%

D. 75%

3550. The major lipids that make up the cell membrane are_______________?
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A. Sphingomyelins

B. Triglycerides

C. Fatty acids

D. Phospholipids