Chapter 2.4.2 (Exam 1) Biochemical Determination

Question 1

What does a qualitative analysis of a biochemical reaction measure?

Answer 1

Identifying the substances involved or the steps in a biochemical reaction

Question 2

What does a quantitative analysis of a biochemical reaction measure?

Answer 2

Measure concentrations or amounts of substances

Question 3

What is a mole?

Answer 3

Amount of a substance (in grams) numerically equal to its molecular weight, e.g., 1 mole of Na = 23 g

Question 4

What is Avogadro’s number?

Answer 4

The number of molecules in 1 mole is constant for all substances: 6.02 × 10²³ molecules

Question 5

What is molarity of a solution?

Answer 5

Number of moles per liter of solution

e.g. 1 mole of sugar in 1 liter of water is a 1 molar (M) solution

Question 6

What range is the molarity of solutions within living tissues?

Answer 6

The molar concentration of solutions in living tissues are in the micro- to millimolar range.

Question 7

Are moles associated with quantitative or qualitative analysis? Why?

Answer 7

Quantitative, because they measure the amount of a certain substance