Practice Questions

TLS Online TPP Program

#Question id: 13159

How signaling is involved in ensuring that yeast cells fuse only with cells of the opposite mating type?

#Unit 4. Cell Communication and Cell Signaling

The two cells of opposite mating type (a and alpha) each secrete a certain signaling molecule, which can only be bound by receptors carried on cells of the opposite mating type. Thus, the a mating factor cannot bind to another a cell and cause it to grow toward the first a cell. Only an alpha cell can “receive” the signaling molecule and respond by directed growth.
The two cells of opposite mating type (a and alpha) each secrete a certain signaling molecule, which can only be bound by receptors carried on cells of the same mating type. Thus, the a mating factor can bind to another a cell and cause it to grow toward the first a cell.
The two cells of opposite mating type (a and alpha) each proteins attached to the plasma membrane of one cell can interact directly with cell-surface receptors on adjacent cells. Thus, the a mating factor can directly bind to another a cell and cause it to grow.
The two cells of opposite mating type (a and alpha) each respond to substances that they themselves release.

More Questions

TLS Online TPP Program

#Question id: 28853

#Unit 2. Cellular Organization

Stathmin enhances that a growing microtubule will switch to the shrinking state in which condition?

a) When it increases the effective concentration of tubulin subunits that are available for polymerization

b) When it decreases the effective concentration of tubulin subunits that are available for polymerization

c) When stathmin is in phosphorylated condition

d) When stathmin is in dephosphorylated condition

TLS Online TPP Program

#Question id: 28854

#Unit 2. Cellular Organization

which protein promotes breakage by extracting tubulin subunits from the wall of the microtubule (also releases microtubules from MTOCs) ?

TLS Online TPP Program

#Question id: 28855

#Unit 2. Cellular Organization

which protein promotes breakage by extracting tubulin subunits from the wall of the microtubule (also releases microtubules from MTOCs) ?

TLS Online TPP Program

#Question id: 28856

#Unit 2. Cellular Organization

The main families of motor proteins mediate transport along microtubules Kinesin-1 which is similar to myosin II that contain various domains such as

II) Stalk domain

III) Tail domain

a) forms a long coiled-coil

b) at the C-terminus that attaches to cargo

c) at the N-terminus of the heavy chain

d) at the C-terminus of the heavy chain

Correctly match the following domains with given characters;

TLS Online TPP Program

#Question id: 28857

#Unit 2. Cellular Organization

Which of the following motor proteins mediate the transport along microtubules similar to myosin II ?

TLS Online TPP Program

#Question id: 28858

#Unit 2. Cellular Organization

Which of the following kinesin is a C-terminal kinesin & travel toward the microtubule minus end?