Amphitelic attachment, 

sister kinetochores attach to microtubules emanating from opposite spindle poles, they are stably attached

TLS Online TPP Program

#Id: 8168

#Section 3: Genetics, Cellular and Molecular Biology

Rab GTPases 

associate with transport vesicles and act as key regulators of vesicle trafficking to and fusion with the appropriate target membrane.

TLS Online TPP Program

#Id: 7928

#Section 3: Genetics, Cellular and Molecular Biology

Muscle cells have an abundant, modified smooth ER called the sarcoplasmic reticulum.

The release and reuptake of Ca2+ by the sarcoplasmic reticulum trigger myofibril contraction and relaxation, respectively

TLS Online TPP Program

#Id: 8153

#Section 3: Genetics, Cellular and Molecular Biology

A second function of small GTPases in vesicle formation is in the pinching off of a completed vesicle from the parent membrane

TLS Online TPP Program

#Id: 10348

#Section 2: General Biology

BAFF-R expression is first detected in T1 B cells and increases steadily there after.

Signaling through the BAFF/BAFF-R axis promotes survival of transitional B cells by inducing the synthesis of anti-apoptotic factors such as Bcl-2, Bcl-xl, and Mcl-1

TLS Online TPP Program

#Id: 8149

#Section 3: Genetics, Cellular and Molecular Biology

ARF and Sar1 similar to Ras