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Home » Medical Papers » UHS MDCAT » Aptitude Test - 46
1.Antibodies are proteins and made up of how many polypeptide chains?
A. one
B. Two
C. Three
D. one
2.Oxidative phase of glycolysis starts with dehydrogenation of
A. Glycolysis
B. Ribulose Bisphosphate
C. Glyceraldehyde 3-phosphate
D. Glycolysis
3.In one turn, the Krebs’s cycle produces one molecule of ATP, one molecule of FADH2 and __________ molecules of NADH
A. 1
B. 2
C. 3
D. 1
4.Which one of the following is the stage of cellular respiration for which oxygen is not essential?
A. Glycolysis
B. Pyruvate oxidation
C. Krebs’s cycle
D. Glycolysis
5.Pyruvate, the end product of glycolysis moves from cytosol to mitochondrial matrix where it is oxidized into ___________ producing CO2 as a by-product.
A. Acetic acid (active)
B. Citrate
C. NAD
D. Acetic acid (active)
6.pBr 322 have antibiotic resistance gene for
A. Ampicillin and aspirin
B. Streptomycin and metronidazole
C. Ampicillin and Tetracycline
D. Ampicillin and aspirin
7.Cystic Fibrosis affects which one of the following cells of the body?
A. Epithelial cells
B. Endothelial cells
C. Plasma cells
D. Epithelial cells
8.The enzymes which act as molecular scissors in recombinant DNA technology is
A. Exonucleoses
B. Polymerases
C. Endonucleoses
D. Exonucleoses
9.Which of the following is the correct sequence of PCR?
A. Heating  Cooling  Add Primer  Copying of strand
B. Heating  Add Primer  Cooling  Copying of strand
C. Add Primer  Heating  Cooling  Copying of strand
D. Heating  Cooling  Add Primer  Copying of strand
10.When two different pieces of DNA are joined together, the result is which one of the following?
A. Complementary DNA
B. Recombinant DNA
C. Mutated DNA
D. Complementary DNA
11.Individual successions are known as
A. Primary successions
B. Secondary successions
C. Seres
D. Primary successions
12.Which one of the following is the ultimate distributional unit within which a species is restrained by the limitations of its physical structure and physiology?
A. Niche
B. Ecosystem
C. Biome
D. Niche
13.All herbivores belong to which trophic level in the food chain?
A. T1
B. T2
C. T3
D. T1
14.The relationship in which one organism gets benefit and the other is not affected is called
A. Mutualism
B. Commensalism
C. Predation
D. Mutualism
15.When a gene expresses the effects of a gene at another focus, this is known as
A. Epistasis
B. Co-dominance
C. Complete dominance
D. Epistasis
16.In male the sex determining gene is
A. XY
B. SRY
C. SYX
D. XY
17.A gene which affects two or more unrelated characteristics is called
A. Pleiotropic
B. Epistatic
C. Dominant
D. Pleiotropic
18.Position of a gene within a DNA molecule is
A. Locus
B. Origin
C. Amplicon
D. Locus
19.Sickle cell anemia is a type of
A. Insertion
B. Transposition
C. Deletion
D. Insertion
20.One method of creating an inverted population is known as _________ and consist of illuminating the laser material with light.
A. Optical Pumping
B. Excitation
C. Bremsstrahlung
D. Optical Pumping
21.In population inversion (Ruby Laser) atoms can reside in the excited state for:
A. 10-11
B. 10-8
C. 10-3
D. 10-11
22.In X-ray tube, electrons after being accelerated through velocity ‘v’ strike the target, then the wavelength of emitted X-rays is:
A. Not greater than hc/ eV
B. Not less than hc/ eV
C. Equal to the h /mV
D. Not greater than hc/ eV
23.In the reaction, 92Th 234 → Y 91 234 + -1e 0 the electron e -1 0 emits from the
A. 1st Orbit
B. 2nd Orbit
C. Nucleus
D. 1st Orbit
24.According to the equation ZX A → Y + 3α particles, what are the atomic and mass numbers of ‘Y’?
A. Z – 6, A – 12
B. Z – 2, A – 4
C. Z + 1, A
D. Z – 6, A – 12
25.A certain radioactive nuclide of mass number ‘x’ decays by β-emission and α-emission to a second nuclide of mass number ‘t’. Which of following correctly relates ‘x’ and ‘t’?
A. x = t + 4
B. x = t - 4
C. x – 3 = t
D. x = t + 4
26.Cobalt 60 is used in medicine and is an intense source of:
A. α-particles
B. β-particles
C. γ-rays
D. α-particles
27.In fluid flow, for the equation of continuity A1v1 = A2v2. If velocity of the fluid at one end is doubled, then what will be the cross-sectional area at this end?
A. Double
B. Half
C. (Half)2
D. Double
28.The value of least distance vision for normal eye is
A. 20 cm
B. 30 cm
C. 25 cm
D. 20 cm
29.The distance between two dark adjacent fringes is mathematically written as:
A. ΔY = λL /d
B. ΔY = λ/ dL
C. ΔY = λd/ L
D. ΔY = λL /d
30.In normal adjustment of compound microscope, the eye piece is positioned so that the final image is formed at:
A. Optical Center
B. Infinity
C. Principle Focus
D. Optical Center
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