The content of nucleolus is not continuous with the rest of nucleoplasm becaue it is bound by single membrane

RER is extensive and continuous with the inner membrane of nucleus

The outer membrane of nucleus usually remains continuous with which cell organelle?

Which organelle is not bounded by membrane ?

The inner membrane of nucleus usually remain continuous with ER and also bears ribosomes on it

Which organelles are covered single membrane layer ?

Eukaryotic cells have organelles which may (a) not be bound by a membrane (b) bound by a single membrane (c) bound by a double membrane Group the various sub-cellular organelles into these three categories.

Answer carefully: (a) Two large conducting spheres carrying charges Q_(1) and Q_(2) are brought close to each other. Is the magnitude of electrostatic force between them exactly given by Q_(1),Q_(2)//4pi epsilon_(0)r^(2) , where r is the distance between their centres? (b) If Coulomb’s law involved 1//r^(3) dependence (instead of would Gauss’s law be still true ? (c) A small test charge is released at rest at a point in an electrostatic field configuration. Will it travel along the field line passing through that point? (d) What is the work done by the field of a nucleus in a complete circular orbit of the electron? What if the orbit is elliptical? (e) We know that electric field is discontinuous across the surface of a charged conductor. Is electric potential also discontinuous there? (f) What meaning would you give to the capacitance of a single conductor? (g) Guess a possible reason why water has a much greater dielectric constant (= 80) than say, mica (= 6).

A : Magnetic field lines are continuous and posses closed loop. R : Magnet do not exist with single pole.