Question

Microfilaments were discovered by
A. Slautterback
B. Paleviz et al
C. Altman
D. Led better and Porter

Answer 1

Hint: Microfilaments are basically polymers of actin and it gives support to the cell in movement, cell division.

Complete Answer:
A. Slautterback: The term Microtubules was coined by Slautterback in 1963. Microtubules are basic small cytoplasmic tubules that are present in the interstitial cells and present in cnidoblasts of hydra. His concept of microtubules was widespread and consistent.

B. Paleviz et al: In the year 1974 microfilaments were discovered by Paleviz et al. These are a part of the cytoskeleton and support flexibility and strength to the cell.

C. Altman: Altman discovered that the ability of enzyme has been lost if the RNA was removed from the protein. He discovered this theory in the year 1978.

D. Led better and Porter : Ledbetter and Porter in 1963 discovered microtubules. These are unbranched long and have a diameter of 10-20 micrometre.

Note: The actin filaments are a part of cytoskeleton which is found in the cytoplasm of a eukaryotic cell. Microfilaments are mainly composed of polymers of actin. They keep the organelles in a particular place within the cell.