The following figure is a model of seedling establishment as a function of distance from a parent tree. Initial seed density measures the number of seeds falling to the ground. Seed survivorship measures the proportion of seeds that survive to the adult stage at each distance

Which of the following factors is most likely to generate the seed survivorship curve shown? 

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#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

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#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

I) Head domain

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?