Nuclear pores are the passage through which movement of RNA and protein molecules take place in only one direction

Read the following four statements (i -iv) (i) Every chromosome essentially has a primary constriction or the centromere. (ii) During different stages of cell division, cells show structured chromosomes in place of the nucleus . (iii) Nuclear pores are the passages through which movement of RNA and Protein takes place in one direction between the nucleus and cytoplasm. (iv) Chromatin contains DNA, some basic proteins called histone adn RNA only . How many of the above statement are correct

a.The passage through which movement of RAN and protein molecules takes place in both directions in a nuclear pore. b. A disc - shaped structures is kinetochore is present as a lateral side of centromere c. DNA moves easily in both directions through the nuclear pore Read the following and select the correct option

'Post-mitotic phase'' of the cell in which active synthesis of RNA and proteins takes place is

In which phase, the synthesis of new DNA molecules takes place?

Select the molecules which has only one pi bond

In which of the following the inheritance takes place only by male :-

Name the layers through which the exchange of gases takes place in the lungs.

Name the barriers through which glomerular filtration takes place?

Name the skeletal joint which permits movement in one direction only.

What are the conditions which must be satisfied for H -bonding to take place in a molecule.