Sorry if I scared you! I have not even got a BSc in bioscience, so maybe I was completely off the mark [at least let us hope so!]!
However, just in case one or two of my topics come up, here is a bit of info:-
a) using Poiseuille's equation to work out blood flow in an artery.
You can google the equation: the crux is that flow is directly proportional to the fourth power of the radius, and directly proportional to the pressure,
BUT:
inversely proportional to the viscosity [eta] [as you can imagine a gunjy viscous liquid will move slower].
b) quick calculation of organelle size from electron micrograph given the magnification OR vice versa.
e.g. if an EM shows a mitochondrion of length 5 cm on paper, and the actual length of it is 5 um [micrometres] then what is the magnification? Well, it is 5 X 10 mm on paper = 50,000 um so magnif-n = 50,000/5
= 10,000X
c) {know that 1 Gray (Gy - SI unit of radiation) is equal to 100 rads [old unit], and perhaps be able to work out radiotherapy dosages. [unlikely to come up, on second thought]}
d) know all your serum level units [mmoles/L for e.g., K+, Na+, Ca++, etc.; nmoles, pmoles and fmoles for hormones; IU/mL for enzymes e.g. creatine kinase, alkaline phosphatase, ALT]; AND interconversion between them
1 millimole = 1000 micromoles
1 micromole = 1000 nanomoles
1 nanomole = 1000 picomoles
1 picomole = 1000 femtomoles
You can then deduce other permutations e.g., 1 millimole = 1 million nanomoles;
1 picomole = 10^-6 micromole
Oc the prefixes also apply to e.g., nanograms, picometres, etc.
e) scale on an ECG e.g. that a vertical deflection of 1 cm represents 1 mV and 1mm on x axis represents 40 ms
They probs will not expect you to know this, but one way of working out the heart rate on an ECG is to take the interval between two R waves [tall peaks] in number of 5 mm squares, then divide 300 by this number e.g. if there are four 5mm squares between adjacent R waves [called the R-R interval], then HR = 300/4 = 75 bpm.
Once again, best of luck!
M.