Exam 9: The Cytoskeleton and Cell Motility

Expression of the ActA protein in previously non-motile strains of bacteria allowed for the _______________ and ___________ characteristic of pathogenic strains.

The protein FtsZ acts in the bacterial cell analogously to the ______ cytoskeleton during eukaryotic cytokinesis and is a(n)_________ homolog that is found in nearly all prokaryotic cells.

A scientist observes the motion of a certain type of vesicle around the cell.She notices that vesicle movement ceases when colchicine is added to the culture medium.What conclusion can she draw?

Which of the following molecular motors is known to travel in an anterograde direction along microtubules?

Which of the following molecular motors is associated with microfilaments?

How are microtubules thought to affect cell shape in plants?

It was found that Listeria infection could not be spread from one cell to its neighbors on a petri dish in the presence of cytochalasin.This suggested that ___________.

What accounts for the decrease in the length of an entire muscle?

Along which structure do membranous vesicles and organelles typically engage in local movement in the cell periphery of an animal cell?

The peripheral doublets of the axoneme are connected to one another by a(n)________ composed of an elastic protein-based linkage called the _______.

With which of the following structures are intermediate filaments associated?

One surprising symptom of that occurs in roughly half of patients who have non-motile cilia is a complete reversal of the left-right asymmetry of the internal organs.This condition is called _________.

Why would the addition of an irreversibly binding ATP analog to an in vitro system for monitoring dynein molecular motors stop motor function?

Which region of the sarcomere contains only actin thin filaments or microfilaments?

Which of the following could be a method used to label microtubules with a fluorescent dye?

From what structure do cilia and flagella emerge?

Which protein below is not strictly required for Listeria motility within an infected cell?

As a fibroblast moves,its leading edge extends from the cell as a broad,flattened,veil-like protrusion called a ________.

How can the rate of movement generated by molecular motors be measured?

The movement of endocytic vesicles formed in the neuron terminals from the synapse to the cell body is said to be in a(n)________ direction.