Centriole is made of nine unevenly spaced peripheral fibrils of tubuline protein

In centriole each peripheral fibril is a_____.

In an arrangement to view the interference pattern produced by a wedge of liquid between a microscope slide and a glass block thhe interference pattern obtained is made is equal spaced parallel fringes. The fringe separation (or fringe width) can not be decreased by which of the following actions.

In centriole radial spoke is made of:-

Cell membrane proteins can classified as integral or peripheral on the basis of:

Which of the following statement is wrong? (A) Pollen grains remain viable for several months because their outer covering is made up of sporopollenin (B) No enzyme can degrade sporopollenin (C) Pollen grains are well represented in fossil state due to sporopollenin (D) Pollen wall has cavities containing proteins

The central part of the proximal region of the centriole is proteinaceous and called the (A)____, which is connected with tubules of the peripheral triplet by (B)_____.