# Tutor profile: Tamla L.

## Questions

### Subject: Chemistry

List the following molecular forces in ascending order of strength: Covalent bonding, hydrogen bonding, Van der Waals forces, Ionic bonding

Van der Waals Forces <hydrogen bonding< ionic bonding < covalent bonding

### Subject: Biology

The main function of Fermentation is to (A) synthesize food (B) Produce more ATP to add onto those from cellular respiration (C) generate ATP for the cell (D)synthesize lactic acid (E) regenerate NAD+

ANSWER: (E) regenerate NAD+ EXPLANATION: Fermentation allows the breakdown of glucose to continue by catching the incoming steady stream of electrons coming from the broken glucose molecules. The NADH is re-oxidized into NAD+ by the process. Fermentation happens in the absence of the Electron Transport Chain (ETC) and the mitochondria.

### Subject: Algebra

Solve for y: x^2 (2y-4) = y +7

Step 1: Expand the parenthesis: 2x^2y - 4x^2 = y+7 Step 2: Group y terms 2x^2y - y =7+ 4x^2 Step 3: Factor Out y y(2x^2-1) = 7 + 4x^2 Step 4: Isolate y by dividing both sides by (2x^2- 1) to result in: y = 7 + 4x^2/2x^2-1

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