QuestionSBA
QuestionChoice
Intermediate filaments produce a network of fibres inside cells that provide tensile strength, allowing cells to resist external forces such as stretching. They also strengthen cell contact via desmosomes.
10003807
b
Intermediate filament
QuestionChoice
Actin microfilaments are found near the cell surface and regulate the cell cortex (cell shape) and cell movement (such as cell crawling, phagocytosis and cell division) using ATP.
10003808
c
Actin microfilament
QuestionChoice
Microtubules have several functions including facilitating cell division, anchoring cell organelles, and facilitating intracellular transport. Microtubules also form cilia and flagella to assist in cell locomotion. Kartagener's Syndrome is an autosomal recessive condition in which cilia are defective. This results in increased bronchial infections and male infertility due to poor sperm motility.
10003806
a
Microtubule
QuestionChoice
Nuclear lamin is a nuclear intermediate filament protein found inside the cell's nucleus. It provides attachment sites for DNA (as chromatin).
10003809
d
Nuclear lamin
QuestionChoice
Centrosomes anchor microtubules near the cell's nucleus. Microtubules anchored to the centrosome can grow and shrink independently - this is known as dynamic instability.
10003810
e
Centrosome
Concept
Chapter
2693
4204
Globular and Fibrous proteins
Topic
181
Structure and Function of Cells
13308
A 30-year-old male presents to his GP complaining of recurrent bronchial infections. He also mentions that his partner and himself have been struggling to conceive.

The GP refers him for further investigations and he is subsequently diagnosed with Kartagener's Syndrome. This condition affects the cilia in the respiratory tract and the flagella of sperm.

Which type of cytoskeleton filament is responsible for the movement of cilia and flagella?
a