biology pracitcal exam review

-Calibrates the Spectrophotometer

-prevents outside variable to be measured

-allows only the desired molecules to be read

(a)  

• color: yellow (light coloration)

• Measure amount of reducing sugar (Maltose)

• Redish-dark amber is the opposite color when no maltose is identified

(a)  

• color: clear/transparent (opposite is black-dark blue)

• Measure the amount of starch there is

• Interacts with and binds to starch

(a)  

Unit 4 independent variable

(Hint: spectrometer with serial dilution)

(a)  

Unit 4 dependent variable

(Hint: spectrophotometer with serial dilution)

(a)  

What reagent is this?

• Color: blue

• Measure the amount of protein concentration

• Higher protein concentration the deeper the blue color is

(a)  

Liquid that dissolves the solution

(Hint: always water)

(a)  

Material that gets broken down by the solvent

(a)  

Taking a sample of a solution and diluting it through a series of standard volumes

(Hint: 40 -> 20 -> 10 -> etc)

(a)  

Measures the absorbency of light

(Hint: you can also tell what the percentage of light that was transmitted)

(a)