# Tutor profile: Shaili S.

## Questions

### Subject: Basic Math

What is 60% of 45% of 87?

In order to take 60%, we need to first solve for 45% of 87. An easy way to solve a percentage problem is by converting the percentage into a fraction: 45/100 * 87 = 39.15 60/100 * 39.15 = 23.49

### Subject: DAT

A cylindrical container with a radius of 3 and a height of 4 is half-filled with water. If this water is poured into a new cylindrical container with a radius of 6 and a height of 8, what fraction of the new container will be filled?

Behind this intimidating-sounding geometry, the question is a simple ratio. We know that the area of a cylinder is given by: Area = pr2h The water in the half-filled small cylinder has a volume of p x 32 x 2, or 18p. The total volume of the new, larger cylinder is p x 62 x 8, or 288p. The fraction of the new container, filled, then, is: 1/6

### Subject: Biology

What are the main components of the endomembrane system? What is the secretory pathway hypothesis? How was the secretory pathway hypothesis experimentally confirmed? What is meant by a “pulse-chase” experiment?

The main components of the endomembrane system are the ions, amino acids, ATP, and other small molecules that randomly diffuse throughout the cell. The secretory pathway hypothesis is that such a pathway exists and that the rough endoplasmic reticulum and Golgi apparatus work together as an integrated endomembrane system. The secretory pathway hypothesis experimentally was confirmed because it suggested proteins that were specified for secretion from the cell that gets synthesized in a particular set of steps. These proteins are placed into vesicles when moving from the rough endoplasmic reticulum to the Golgi Apparatus. The rough endoplasmic reticulum and the Golgi apparatus work together as an integrated endomembrane system. The "pulse- chase" experiment proves that a labeled molecule is followed by a chase molecule. Thus, proteins can be tracked.