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Objective Questions

Latest BET Molecular and Human Genetics Exam Question (Objective Questions), MCQ in English

Subjects : Aptitude & General Biotechnology, Molecular and Human Genetics

Question Bank BET Molecular and Human Genetics Exam - English
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Aptitude & General Biotechnology

Question 1Single Answer
In ruby laser, the stimulated emission is due to transition from
  1. A
    metastable state to any lower state
  2. B
    any higher state of lower state
  3. C
    metastable state to ground state
  4. D
    any higher state to ground state
Question 2Single Answer
A direct current I flows along the length of an infinitely long straight thin walled pipe, then the magnetic field is
  1. A
    uniform throughout the pipe not zero
  2. B
    zero only along the axis of the pipe
  3. C
    zero at any point inside the pipe
  4. D
    maximum at the centre and minimum at the edge
Question 3Single Answer
convex lens made of glass has focal length 0.15m in air. If the refractive index of glass is 3/2, and that of water is 4/3 the focal length of lens when immersed in water is
  1. A
    0.45 m    
  2. B
    0.15 m
  3. C
    0.30 m       
  4. D
    0.6 m
Question 4Single Answer
Two sources are said to be coherent if they produce waves
  1. A
    having a constant phase difference
  2. B
    of equal wavelength
  3. C
    of equal speed
  4. D
    having same shape of wavefront
Question 5Single Answer
Three resistors 1 Ω, 2 Ω, 3Ω resistor a 3 V battery is connected. The current through 3 Ω resistor is -
  1. A
    0.75 A     
  2. B
    1 A
  3. C
    2 A         
  4. D
    1.5 A
Question 6Single Answer
10-6 M NaOH is diluted 100 times. The pH of the diluted base is
  1. A
    between 7 and 8
  2. B
    between 5 and 6
  3. C
    between 6 and 7
  4. D
    between 10 and 11
Question 7Single Answer
In the electrolysis of acidulated water, it is desired to obtain 1.12 cc of hydrogen per second under STP condition. The current to be passed is
  1. A
    1.93 A         
  2. B
    9.65 A
  3. C
    19.3 A        
  4. D
    0.965 A
Question 8Single Answer
The one which decreases with dilution is
  1. A
    molar conductance
  2. B
    conductance
  3. C
    specific conductance
  4. D
    equivalent conductance
Question 9Single Answer
Vapour pressure of pure ‘A’ is 70 mm of Hg at 25oC. It forms an ideal solution with ‘B’ in which mole fraction of A is 0.8. if the vapour pressure of the solution is 84 mm of Hg at 25oC, the vapour pressure of pure ‘B’ at 25oC is
  1. A
    28 mm   
  2. B
    56 mm
  3. C
    70 mm    
  4. D
    140 mm
Question 10Single Answer
A 6% solution of urea is isotonic with
  1. A
    1 M solution of glucose
  2. B
    0.05 M solution of glucose
  3. C
    6% solution of glucose
  4. D
    25% solution of glucose
Question 11Single Answer
The respiratory quotient during cellular respiration would depend on
  1. A
    the nature of enzymes involved
  2. B
    the nature of the substrate
  3. C
    the amount of carbon dioxide released
  4. D
    the amount of oxygen utilised
Question 12Single Answer
Which of the following is not a green - house gas ?
  1. A
    Water vapour
  2. B
    Carbon monoxide
  3. C
    Methane
  4. D
    Oxygen
Question 13Single Answer
Both husband and wife have normal vision though their fathers were colorblind and mothers did not have any gene for colorblindness. The probability of their daughters becoming colorblind is
  1. A
    50%          
  2. B
    75%
  3. C
    0% 
  4. D
    25%
Question 14Single Answer
An animal, which has both exoskeleton and endoskeleton structures is a
  1. A
    fresh-water mussel
  2. B
    tortoise
  3. C
    frog
  4. D
    jelly fish
Question 15Single Answer
Identify the group, which includes animals all of which give birth to young ones directly?
  1. A
    Dolphin, kangaroo, bat, cat
  2. B
    Platypus, penguin, bat, hippopotamus
  3. C
    shrew, bat, kiwi, car
  4. D
    Lion, whale, ostrich, bat
Question 16Single Answer
The cash difference between the selling prices of an article at a profit of 4% and 6% is Rs. 3. The ratio of the two selling prices is:__________ ?
  1. A
    51:52
  2. B
    52:53
  3. C
    51:53
  4. D
    52:55
Question 17Single Answer
Which of the following numbers is irrational ?
  1. A
    √49
  2. B
    0.125
  3. C
    √2
  4. D
    22/7
Question 18Single Answer
356 x 936 – 356 x 836 = ?
  1. A
    35600  
  2. B
    34500
  3. C
    9630
  4. D
    93600
Question 19Single Answer
Arrange in descending order: 5/8, 7/10, 3/4
  1. A
    3/4 > 7/10 > 5/8
  2. B
    7/10 > 3/4 > 5/8
  3. C
    3/4 > 5/8 > 7/10
  4. D
    5/8 > 7/10 > 3/4
Question 20Single Answer
What is (3^{4} times 9^{2}) ?
  1. A
    36
  2. B
    38
  3. C
    310
  4. D
    96
     
Question 21Single Answer
If 34X-2 = 729, then find the value of X.
  1. A
    4     
  2. B
    3
  3. C
    2 
  4. D
    5
Question 22Single Answer
Convert 0.6 into fraction ?
  1. A
    3/5
  2. B
    2/3
  3. C
    4/5
Question 23Single Answer
The no. plate of a bus had peculiarity. The bus number was a perfect square. It was also a perfect square when the plate numbers were reversed. The bus company had only five hundred buses numbered from 1 to 500. What was the number ?
  1. A
    169  
  2. B
    36
  3. C
    196 
  4. D
    Can not say
Question 24Single Answer
If a and b are positive integers, such that ab = 125, then (a-b)a+b-4 = ?
  1. A
    16   
  2. B
    25
  3. C
    28  
  4. D
    30
Question 25Single Answer
If x*y = x2 + y2 – xy, then value of 9*11 is
  1. A
    93     
  2. B
    103
  3. C
    60.5
  4. D
    121
Question 26Single Answer
What is the central dogma of molecular biology?
  1. A
    Protein → RNA → DNA
  2. B
    DNA → RNA → Protein
  3. C
    RNA → DNA → Protein
  4. D
    Protein → DNA → RNA
Question 27Single Answer
What type of bond connects amino acids in a protein?
  1. A
    Glycosidic bond
  2. B
    Peptide bond
  3. C
    Phosphodiester bond
  4. D
    Ester bond
Question 28Single Answer
Which type of bond links nucleotides in a nucleic acid?
  1. A
    Peptide bond
  2. B
    Glycosidic bond
  3. C
    Phosphodiester bond
  4. D
    Hydrogen bond
Question 29Single Answer
What type of bond connects monosaccharides in a carbohydrate?
  1. A
    Peptide bond
  2. B
    Glycosidic bond
  3. C
    Phosphodiester bond
  4. D
    Ester bond
Question 30Single Answer
What type of bond connects fatty acids to glycerol in a lipid?
  1. A
    Peptide bond
  2. B
    Glycosidic bond
  3. C
    Phosphodiester bond
  4. D
    Ester bond
Question 31Single Answer
Which force is a weak, short-range attraction between fluctuating dipoles?
  1. A
    Hydrogen bonding
  2. B
    Electrostatic interaction
  3. C
    Van der Waals interaction
  4. D
    Hydrophobic effect
Question 32Single Answer
Which force involves the attraction between oppositely charged ions?
  1. A
    Hydrogen bonding
  2. B
    Electrostatic interaction
  3. C
    Van der Waals interaction
  4. D
    Hydrophobic effect
Question 33Single Answer
Which force is a weak dipole-dipole interaction where hydrogen is involved?
  1. A
    Electrostatic interaction
  2. B
    Van der Waals interaction
  3. C
    Hydrogen bonding
  4. D
    Hydrophobic effect
Question 34Single Answer
Which effect drives nonpolar molecules to aggregate in an aqueous environment?
  1. A
    Electrostatic interaction
  2. B
    Van der Waals interaction
  3. C
    Hydrogen bonding
  4. D
    Hydrophobic effect
Question 35Single Answer
What is a common secondary structure in proteins that resembles a coiled spring?
  1. A
    Beta-sheet
  2. B
    Alpha-helix
  3. C
    Beta-turn
  4. D
    Random coil
Question 36Single Answer
What is a common secondary structure in proteins that resembles a pleated sheet?
  1. A
    Alpha-helix
  2. B
    Beta-sheet
  3. C
    Beta-turn
  4. D
    Random coil
Question 37Single Answer
What is a short, U-shaped secondary structure in proteins?
  1. A
    Alpha-helix
  2. B
    Beta-sheet
  3. C
    Beta-turn
  4. D
    Random coil
Question 38Single Answer
What plot shows the distribution of phi and psi angles in a protein structure?
  1. A
    Lineweaver-Burk plot
  2. B
    Ramachandran plot
  3. C
    Scatchard plot
  4. D
    Hill plot
Question 39Single Answer
What are distinct functional and structural units in a protein?
  1. A
    Domains
  2. B
    Motifs
  3. C
    Residues
  4. D
    Subunits
Question 40Single Answer
What is the arrangement of multiple protein subunits in a complex?
  1. A
    Primary structure
  2. B
    Secondary structure
  3. C
    Tertiary structure
  4. D
    Quaternary structure
Question 41Single Answer
Which DNA conformation is a left-handed double helix?
  1. A
    A-DNA
  2. B
    B-DNA
  3. C
    Z-DNA
  4. D
    C-DNA
Question 42Single Answer
Which DNA conformation is the most common form found in cells?
  1. A
    A-DNA
  2. B
    B-DNA
  3. C
    Z-DNA
  4. D
    C-DNA
Question 43Single Answer
Which DNA conformation is a dehydrated form of DNA?
  1. A
    A-DNA
  2. B
    B-DNA
  3. C
    Z-DNA
  4. D
    C-DNA
Question 44Single Answer
What are catalytic RNA molecules called?
  1. A
    Ribosomes
  2. B
    Ribozymes
  3. C
    Riboswitches
  4. D
    Spliceosomes
Question 45Single Answer
What are regulatory RNA sequences that bind to metabolites?
  1. A
    Ribosomes
  2. B
    Ribozymes
  3. C
    Riboswitches
  4. D
    Spliceosomes
Question 46Single Answer
What is the primary structure of a protein?
  1. A
    3D shape
  2. B
    Amino acid sequence
  3. C
    Subunit arrangement
  4. D
    Secondary structure elements
Question 47Single Answer
What force contributes to the stability of the DNA double helix?
  1. A
    Peptide bonds
  2. B
    Glycosidic bonds
  3. C
    Hydrogen bonds
  4. D
    Ester bonds
Question 48Single Answer
Which amino acid has a sulfur-containing side chain?
  1. A
    Alanine
  2. B
    Valine
  3. C
    Cysteine
  4. D
    Leucine
Question 49Single Answer
Which amino acid has an aromatic side chain?
  1. A
    Glycine
  2. B
    Serine
  3. C
    Tyrosine
  4. D
    Asparagine
Question 50Single Answer
What is the backbone of DNA made of?
  1. A
    Amino acids
  2. B
    Sugars and phosphates
  3. C
    Fatty acids
  4. D
    Glycerol
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