Daily NEET MCQ- April 7, 2022 - NEET MCQ

Moment of inertia is the summation of product of mass and perpendicular distance from the axis squared of each particle. More the mass, more will be its value. It depends on perpendicular distance hence, it will depend on orientation and distance of particles from the axis. But, it doesn’t depend on the angular velocity. As the body having a particular value of moment of inertia can achieve any value of angular velocity depending on the torque applied on it.

The hollow one will have greater density as both have the same mass and it has to be distributed uniformly. Thus, the summation of product of mass and perpendicular distance from the axis squared of each particle will be more for the hollow cylinder. And hence, it has more moment of inertia.

For any reversible reaction at any stage other than equilibrium, the ratio of the molar concentrations of the products to that of the reactants, where is concentration term is raised to the power equal to the stoichiometric efficient to the substance concerned is called the reaction quotient, Q_C.

Plasmids are made of nucleic acids. They are extrachromosomal small circular DNA that is present in bacterial cell, apart from the genomic DNA. Plasmid DNA confers several special features to the cell.

Plasmids are made of nucleic acids. They are extrachromosomal small circular DNA that is present in bacterial cell, apart from the genomic DNA. They are used as vectors for bacterial transformation.

Mesosome is a characteristic feature of prokaryotes, which is not present in eukaryotic cells. It is a differentiated form of cell membrane derived by the infoldings of the cell membrane in prokaryotes.

Bacterial have a tightly bound three – layered cell envelope. The uppermost layer is the glycocalyx, followed by the cell wall in the middle and the innermost plasma membrane. The cell envelope provides protection.

Chromatophores are pigment containing membranous extensions in the cytoplasm of bacteria. Cyanobacteria contain chromatophores. They are photosynthetic bacteria that are aquatic in nature.

Velocity varies parabolically implies that velocity is of the form at + bt². On differentiating the velocity, we get the equation for acceleration. Therefore, a = dv/dt = a+2bt, which is a linear equation. Hence the acceleration varies linearly.

Let the pressure outside the bubble be P₁, between the two layers be P₂ and pressure inside the bubble be P₃.
P₂ – P₁ = 2S/R
P₃ – P₂ = 2S/R
∴ P₃ – P₁ = 4S/R
This shows that excess pressure just inside the first layer is 2S/R while excess pressure completely inside the bubble is 4S/R.