# Tutor profile: Sadia L.

## Questions

### Subject: SAT II Biology E/M

Where is ATP made in eukaryotic cells?

Did you guess mitochondria, the powerhouse of the cell? You're right! ATP can form through two processes in cells, either through aerobic respiration or anaerobic fermentation. While aerobic respiration yields a total of 34 ATP per molecule of glucose, the anaerobic process yields only 2 molecules of ATP per glucose. Hence, cells in our bodies cannot sustain themselves for a long period of time without oxygen.

### Subject: Chemistry

What is the strongest possible interaction between two molecules (non-ionic)?

The strongest possible interaction is a hydrogen bond which forms when one molecule has a hydrogen donor (H+) and the other molecule has a hydrogen acceptor, namely a lone pair of electrons in either Oxygen, Nitrogen, or Fluorine (H's like to have FON!). The molecules must also have the proper linear orientation for the bond to form!

### Subject: Calculus

What are you trying to find when you're asked to integrate an improper integral?

First of all, definite integrals represent the area under a curve from the lower bound to the upper bound. When one of the bounds is infinity or a number that makes the function undefined, the integral is called "improper." To determine whether an improper integral equates to any number, you must first determine whether or not the integral converges to any value. If it doesn't, this means that as the values approach the impropriety of the integral, the value increases to infinity.

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