Question

1. you carry out a serial dilution where you take 1 volume of solutionfrom a tube and dilute it with 5 volumes of water. what fold dilution are you carrying out?

2. bioloogically significant amino acids share a similar general structure. The variation in amino acids is found in?

3. which of the following assys relies on the reduction of copper from Cu(II) to Cu(I)

lowry

BCA

Bradford

all of these

4, suppose you are investigating vasopresin in the rat brain. which assays would be best for determining the concentration of vasopressin in the posterior pituitary gland?

5. which of the following statement is true about spectrophotometry:

absorbance and transmittance are inversely related

transmittance is measure on a log scale

absorbance equals transmittance

solution with absorbance value of 0.8 absorbs twice as much as one with absorbance value of 0.4

absorbance will be measured at 595nm in this lab

6.if you were given a saline solution consisting of 0.9gNaCl per liter your cell would:

swell and burst

remain normal

swell but not burst due to cell wall

crenate or shrink