INTRODUCTION TO MICROSCOPY CELL BIOLOGY
CYTOSKELETON
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Intermediate filaments form the interior skeleton for cilia and flagella.
|
|
|
Cilia can either move a cell or move fluid over a stationary cell.
|
|
|
Cilia typically outnumber flagella on a cell.
|
|
|
Motor proteins drive the motion of cilia and flagella.
|
Detailed explanation-1: -The cilia and flagella are the same structurally. Their interior skeleton is composed of microtubules. The arrangement of the microtubules is 9+2 . Therefore, the statement is false.
Detailed explanation-2: -Intermediate filaments consist of several intertwined strands of fibrous proteins. Intermediate filaments have no role in cell movement. Their function is purely structural. They bear tension, thus maintaining the cell’s shape, and anchor the nucleus and other organelles in place.
Detailed explanation-3: -The Correct Answer is Option (2) i.e. Cilia are longer compared to Flagella. Cilia are short compared to Flagella. Cilia and Flagella both have the same function i.e. locomotion or movement of the cell.
Detailed explanation-4: -So, the correct answer is ‘The organized beating of cilia is controlled by fluxes of Ca2+ across the membrane’.