Assertion: Eukaryotic cells have the ability to adopt a variety of sha

1.	Assertion: Eukaryotic cells have the ability to adopt a variety of shapes and carry out directed movements. Reason: There are three principal types of protein filaments-actin filament, microtubules and intermediate filaments, which constitute the cytoskeleton.(a)Both A and R are true, and R is the correct explanation of A.(b)Both A and R are true, but R is not the correct explanation of A.(c)A is true but R is false.(d)A is false but R is true.
Answer» The correct option is (a)Both A and R are true, and R is the correct explanation of A. Eukaryotic cells can EASILY adopt various shapes and also perform some guided movements. This is because they have a network of protein fibers that support the SHAPE of the cell and anchor the organelles to a fixed position. This is called the cytoskeleton network. Within the cell the cytoskeleton consists of three elements. These are the microtubules, which CONSIST of tubulin protein, microfilaments having actin, and intermediate filaments CONSISTING of structural proteins like desmin and keratin.

Assertion: Eukaryotic cells have the ability to adopt a variety of shapes and carry out directed movements. Reason: There are three principal types of protein filaments-actin filament, microtubules and intermediate filaments, which constitute the cytoskeleton.(a)Both A and R are true, and R is the correct explanation of A.(b)Both A and R are true, but R is not the correct explanation of A.(c)A is true but R is false.(d)A is false but R is true.

Answer»

The correct option is (a)Both A and R are true, and R is the correct explanation of A.

Eukaryotic cells can EASILY adopt various shapes and also perform some guided movements.
This is because they have a network of protein fibers that support the SHAPE of the cell and anchor the organelles to a fixed position. This is called the cytoskeleton network.
Within the cell the cytoskeleton consists of three elements. These are the microtubules, which CONSIST of tubulin protein, microfilaments having actin, and intermediate filaments CONSISTING of structural proteins like desmin and keratin.