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What are cytoskeleton made up of
Cytoskeleton is made up of microtubule, actin filaments and intermediate filaments
The ans to this question is  In his Systema Naturae, first published in 1735, Carolus Linnaeus distinguished two kingdoms of living things: Animalia for animals and Plantae (Vegetabilia) for plants. He classified all living organisms into two kingdoms – on the basis of nutrition and locomotion (mobility). This is called two kingdom system of classification.
  1. Sal1
  2. Eco RV
  3. Xho 1
  4. Hind III
  The answer of this question is Eco RV is a type II restriction endonuclease isolated from strains of E. coli. It creates blunt ends. The enzyme recognises the palindromic 6-base DNA sequence and makes a cut at vertical line
Medical
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Organ of corti is the correct answer. In between the sensory cells of organ of Corti, the supporting cells called as cells of Deiters are found. Another type of supporting cells associated with this organ are cells of Hensen and Clandious.
Medical
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DNA: DNA (deoxyribonucleic acid) is the genomic material in cells that contains the genetic information used in the development and functioning of all known living organisms. DNA, along with RNA and proteins, is one of the three major macromolecules that are essential for life. Most of the DNA is located in the nucleus, although a small amount can be found in mitochondria (mitochondrial DNA)....
Medical
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Any organism or a living form that possesses or shows the characteristics of life or being alive. Living things are those that display the following characteristics: an organized structure, being made up of a cell or cells. Living organism requires energy to survive or sustain existence.
Medical
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16 pollen grains, beacause each pollen mother cell produces 4 pollen grains.
Medical
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Ribosomes are a nonmembrane bound organelle produced in the nucleolus and contain ribosomal RN A. The ribosomeis made up of a large (60S) and small (40S) subunit that come together and attach to a messenger RN A. The ribosome translates the mRNA to protein by directing the appropriate transfer RNA, each of which carries an associated amino acid, to attach to the mRNA. Ribosomes forming...
Medical
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can I get chapter wise practise questions???? and not unit wise...I wanted to solve questions on morphology and not the whole structural organisation.
  @Vaibhavi Gat  There is a practice question for each concept
Medical
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IMG_20180811_155143.jpg

B

Medical
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For a given reaction, \Delta H=35.5kJmol^{-1}\ and\ \Delta S=83.6JK^{-1}mol^{-1}. The reaction is spontaneous at :(Assume that \Delta H\and\ \Delta S do not vary with tempearature)

  • Option 1)

    T>425K

  • Option 2)

    All Temperatures

  • Option 3)

    T>298K

  • Option 4)

    T<425K

 
  Spontanous process -   - wherein For spontanouse process must be negative.    For a  Spontaneous reaction   ie   T>425K Option 1) T>425K Correct Option 2) All Temperatures Incorrect Option 3) T>298K Incorrect Option 4) T<425K Incorrect
Medical
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Which one of the following is the wrong statement?

  • Option 1)

    The uncertainty principle is:

    \Delta E \times \Delta t \leq \frac{h}{4 \pi}

  • Option 2)

    Half filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry and more balanced arrangement.

  • Option 3)

    The energy of 2s orbital is less than the energy of 2p orbital in case of Hydrogen-like atoms.

  • Option 4)

    de-Broglie's wavelength is given by \lambda=\frac{h}{m\nu }

    where m=mass of the particle , v=group velocity of the partilce 

 
As learnt in Total energy of elctron in nth orbit - Where z is atomic number -   for length 2s & 2p electrons, n = 2  they have the same energy. Option 1) The uncertainty principle is: This solution is incorrect Option 2) Half filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry and more balanced arrangement. This solution is...
Medical
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Match the interhalogen compounds of column-I with the geometry in column II and assign the correct code.

  Column-I   Column-II
1. XX' (i) T-shape
2. XX'_{3} (ii) Pentagonal bipyramidal
3. XX'_{5} (iii) Linear
4. XX'_{7} (iv) Square-pyramidal
    (v) Tetrahedral
  • Option 1)

    Code:

               1       2      3      4

             (iii)     (i)     (iv)   (ii)

  • Option 2)

    Code:

               1       2      3      4

              (v)     (iv)   (iii)   (ii)

  • Option 3)

    Code:

               1       2      3      4

              (iv)    (iii)    (ii)    (i)

  • Option 4)

    Code:

               1       2      3      4

              (iii)    (iv)   (i)     (ii)

 
As we learnt in Chlorine Monofluoride - No hybridisation, polar  - wherein ClF is linear in shape      Chlorine Trifluoride and iodine Trifluoride - Sp3d hybridised and T-shaped  - wherein     Iodine Pentafluoride ......Bromine pentafluoride - Sp3d2 hybridised and square pyramidal  - wherein     Iodine heptafluoride - Sp3d3 hybridised and pentagonal bipyramidal  -...
Medical
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The bulk modulus of a spherical object is 'B'. If it is subjected to uniform to uniform pressure 'p', the fractional decrease in radius is:

  • Option 1)

    \frac{B}{3p}

  • Option 2)

    \frac{3p}{B}

  • Option 3)

    \frac{p}{3B}

  • Option 4)

    \frac{p}{B}

 
  Bulk Modulus - Ratio of normal stress to volumetric strain. v = Original  volume  = Change in volume P = Increase in pressure -ve(sign) shows volume  decrease. - wherein      or  Put this value in equation (i) we get fractional decrease in radius is Option 1) This solution is incorrect Option 2) This solution is incorrect Option 3) This solution is correct Option 4) This solution...
Medical
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The most suitable method of separation of 1:1 mixture of ortho and para-nitrophenols is:

  • Option 1)

    Chromatography

  • Option 2)

    Crystallisation

  • Option 3)

    Steam distillation

  • Option 4)

    Sublimation

 
As we learnt in Steam Distillation - This method is used to separate substances which are steam volatile and are immiscible with water. - wherein e.g.   O-nitrophenol and P-nitrophenol    Steam distillation is the most suitable method of separation of 1 : 1 mixture of ortho and para nitrophenols as there are intramolecular H-bonds in ortho nitrophenol.   Option...
Medical
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A  rope is wound around a hollow cylinder of mass 3 kg and radius 40 cm. What is the angluar acceleration of the cylinder if the rope is pulled with a force of 30 N?

  • Option 1)

    0.25\: rad/s^{2}

  • Option 2)

    25\: rad/s^{2}

  • Option 3)

    5\: m/s^{2}

  • Option 4)

    25 m/s^{2}

 
As we learnt in Torque -       - wherein This can be calculated by using either  = perpendicular distance from origin to the line of force. = component of force perpendicular to line joining force.       and,   Analogue of second law of motion for pure rotation - - wherein Torque equation can be applied only about two point (i) centre of motion. (ii) point which has zero...
Medical
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Predict the correct intermediate and product in the following recation.

H_{3}C-C\equiv CH \underset {HgSO_{4}}{\overset {H_{2}O, H_{2}SO_{2}}{\longrightarrow}} \:\:\:\underset {(A)}{Intermediate}\rightarrow \underset {(B)}{product}

  • Option 1)

    A:H_{3}C-\underset {OH}{\underset {|}{C}}=CH:B:H_{3}C-\underset {SO_{4}}{\underset {|}{C}}=CH_{2}

  • Option 2)

    A:H_{3}C-\underset {O}{\underset {||}{C}}=CH_{3}B:H_{3}C-C\equiv CH

  • Option 3)

    A:H_{3}C-\underset {OH}{\underset {|}{C}}= CH_{2}B:H_{3}C-\underset {O}{\underset {||}{C}}=CH_{3}

  • Option 4)

    A:H_{3}C-\underset {SO_{4}}{\underset {|}{C}}=CH_{2}B:H_{3}C-\underset {O}{\underset {|}{C}}-CH_{3}

 
As learnt in,   Addition of water on alkyne - By the addition of water on alkyne in presence of HgSO4 and H2SO4 alkyne give aldehyde or ketone. - wherein      Option 1) This option is incorrect. Option 2) This option is incorrect. Option 3) This option is correct. Option 4) This option is incorrect.
Medical
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The correct order of the stoichiometries of AgCl formed when AgNO_{3} in excess is treated with the complexes: CoCl_{3}. 5NH_{3}\ and\ CoCl_{3}. 6NH_{3}, respectively is:-

  • Option 1)

    3AgCl, 1 AgCl, 2 AgCl

  • Option 2)

    3AgCl, 2 AgCl, 1 AgCl

  • Option 3)

    2 AgCl, 3 AgCl, 1 AgCl

  • Option 4)

    1 AgCl, 3 AgCl, 2 AgCl

 
As we learnt in  Coordination Sphere - The central atom/ion and the ligands attached to metal are enclosed in square bracket and this collectively termed as coordination sphere - wherein eg:   Counter ion   Coordination sphere       The ligands in the coordination sphere will not ionize. stoichiometries of formed will be : and Option 1) 3AgCl, 1 AgCl, 2 AgCl Incorrect Option 2) 3AgCl, 2...
Medical
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Pick out the correct statement with respect \left [ Mn(CN)_{6} \right ]^{3-}

  • Option 1)

    It is sp^{3}d^{2} hybridised and tetrahedral

  • Option 2)

    It is d^{2}sp^{3} hybridised and octahedral

  • Option 3)

    It is dsp^{2} hybridised and square planar

  • Option 4)

    It is sp^{3}d^{2} hybridised and octahedral

 
As we learnt in  Hybridisation - sp3d2 - square bipyramidal or octahedral  d2sp3 - octahedral  sp3 - tetradedral  dsp2 - square planar - wherein sp3d2 - outer complex d2sp3 - inner complex sp3 -  dsp2 -     e- configuration of Mn3+  in [Mn(CN)6]3-  Mn3+ = 3d4 4s0 As CN- is a strong field ligand, so,  e- in 3d orbital will pair up and make way for d2 sp3 hybridization The geometry will be...
Medical
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If \Theta _{1} and \Theta _{2} be the apparent angles of dip observed in two verical planes at right angles to each other, then the true angle of  dip \Theta is given by:-

  • Option 1)

    \tan ^{2}\Theta =\tan ^{2}\Theta _{1}+\tan ^{2}\Theta _{2}

  • Option 2)

    \cot ^{2}\Theta =\cot ^{2}\Theta _{1}-\cot ^{2}\Theta _{2}

  • Option 3)

    \tan ^{2}\Theta =\tan ^{2}\Theta _{1}-\tan ^{2}\Theta _{2}

  • Option 4)

    \cot ^{2}\Theta =\cot ^{2}\Theta _{1}+\cot ^{2}\Theta _{2}

 
  Angle of Inclination or Dip - It is the angle between the direction of intensity of total magnetic field of earth and a horizontal line in the magnetic meridian. -     CO+ Option 1) This solution is incorrect  Option 2) This solution is incorrect  Option 3) This solution is incorrect  Option 4) This solution is correct 
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