COPY: Quiz 17

Which of the following proteins promotes lamellipodia and filopodia formation?

Rho, Rac, Cdc42 (correct)

Fascin and Villin

Filamin

All of the above

Microtubules are inherently unstable unless they____.

bind to cap proteins (correct)

are stabilized by minus end attachments.

are bound to kinesin.

are assembled in the nucleus.

Most microtubules are made up of 13 _______ that are linear chains of and _ dimers.

tubulin centrioles; gamma tubulin

actin rings; alpha and beta tubulin

protofilaments; alpha and beta tubulin (correct)

microfilaments; gamma and beta tubulin

Shown below is a diagram of a centrosome and associated microtubules. What is the identity of the structure in red, indicated by the black dashed arrow?

gamma-tubulin ring complex Signup and view all the answers

At the leading edge of a cell, ARP proteins help form new branches on actin filaments to push the leading edge forward using the force of the polymerization, as shown in the figure below. What type of structure is being formed?

lamellipodium Signup and view all the answers

Which of the following motor proteins has one head domain, moves along actin toward the plus end, and is found in all cell types?

myosin-I Signup and view all the answers

Which end of a microtubule assembles more rapidly?

(+) end. Signup and view all the answers

The absence of ADP and ATP causes______.

tighly attaches the myosin head to the actin filament. Signup and view all the answers

Calcium is released from the___upon t-tubule activation.

sarcoplasmic reticulum Signup and view all the answers

Which of the following images shows microtubules? A=left, B=middle, C=right

B Signup and view all the answers

COPY: Quiz 17

Questions and Answers

Which of the following proteins promotes lamellipodia and filopodia formation?

Microtubules are inherently unstable unless they____.

Most microtubules are made up of 13 _______ that are linear chains of and _ dimers.

Shown below is a diagram of a centrosome and associated microtubules. What is the identity of the structure in red, indicated by the black dashed arrow?

At the leading edge of a cell, ARP proteins help form new branches on actin filaments to push the leading edge forward using the force of the polymerization, as shown in the figure below. What type of structure is being formed?

Which of the following motor proteins has one head domain, moves along actin toward the plus end, and is found in all cell types?

Which end of a microtubule assembles more rapidly?

The absence of ADP and ATP causes______.

Calcium is released from the___upon t-tubule activation.

Which of the following images shows microtubules? A=left, B=middle, C=right

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COPY: Quiz 17

Questions and Answers

Which of the following proteins promotes lamellipodia and filopodia formation?

Microtubules are inherently unstable unless they____.

Most microtubules are made up of 13 ___________ that are linear chains of ____and _____ dimers.

Shown below is a diagram of a centrosome and associated microtubules. What is the identity of the structure in red, indicated by the black dashed arrow?

At the leading edge of a cell, ARP proteins help form new branches on actin filaments to push the leading edge forward using the force of the polymerization, as shown in the figure below. What type of structure is being formed?

Which of the following motor proteins has one head domain, moves along actin toward the plus end, and is found in all cell types?

Which end of a microtubule assembles more rapidly?

The absence of ADP and ATP causes______.

Calcium is released from the___upon t-tubule activation.

Which of the following images shows microtubules? A=left, B=middle, C=right

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Most microtubules are made up of 13 _______ that are linear chains of and _ dimers.