In most resting eukaryotic cells, the concentration of intracellular Ca2+ is usually kept at least ______ times ______ than the extracellular concentration.

As soon as cohesin is cleaved:

Pick all the statements below that apply to microtubules.  Warning: you will lose points for selecting choices that are not correct.  

Autocrine signaling is a type of:

Dyneins are ______ than kinesins and walk towards the ______ end of microtubules.

The image below shows steps in a phosphorylation cascade (1-5).  Match the proteins (A-E) from the box on the right to the correct steps in the cascade figure below to the left:   Step 1[1],   2 [2],   3 [3],   4 [4],   5 [5].  Just use the uppercase letter (and not the name of the enzyme) to fill in the blanks.

Which of the following extracellular signals binds to intracellular receptors?

Which of the following terms is NOT a microtubule-binding protein?

Intermediate filaments are found in the:

During kinesin movement, the trailing head moves forward to become the leading head upon: