Cell Biology

Name the stage of cell cycle at which one of the following events occur: (i) Chromosomes are moved to spindle equator. (ii) Centromere splits and chromatids separate. (iii) Pairing between homologous chromosomes takes place. (iv) Crossing over between homologous chromosomes takes place.

Why is mitosis called equational division?

What is Go (quiescent phase) of cell cycle?

Describe the events taking place during interphase.

Distinguish cytokinesis from karyokinesis.

What is the average cell cycle span for a mammalian cell?

What is a mesosome in a prokaryotic cell? Mention the functions that it performs.

What is a centromere? How does the position of centromere form the basis of classification of chromosomes. Support your answer with a diagram showing the position of centromere on different types of chromosomes.

Describe the structure of the following with the help of labelled diagrams. (i) Nucleus (ii) Centrosome

Both lysosomes and vacuoles are endomembrane structures, yet they differ in terms of their functions. Comment.