Lab 2 Macromolecules

Question 1

Qualitative and Quantitative

Answer 1

Quantitive is very specific test usually dealing with numbers and multiple tests conducted by many people.

Qualitative is usually conducted a few amount of test usually dealing with quality.

Question 2

Which of the four categories of large biological molecules is DNA

Answer 2

Nucleic acid

Question 3

Which element was reduced, thereby generating the color change, in the tube with the reducing sugars?

Answer 3

Copper

Question 4

What color indicated the presence of reducing sugar?

Answer 4

Orange

Question 5

Which indicator reagent reacts with starch to give us a positive color change?

Answer 5

Iodine test

Question 6

Which indicator reagent reacted with lipids to turn a darker red color on the coffee filter?

Answer 6

Sudan IV

Question 7

Leucine is an amino acid. Would a beaker full of Leucine test positive during a test for protein?

Answer 7

No because ya a monomer and not linked to be a full protein chain.

Question 8

Why did we use water, and not something else, in all the negative standards?

Answer 8

Water has no macromolecules, thus having no reaction to indicator reagents.

Question 9

Assumed we are doing a test for Fructose. In addition to a fructose indicator solution, whatever else would you put into the test tube if you were to make a positive and negative standards for fructose?

Answer 9

Positive standard- Fructose

Negative Standard-water

Question 10

Name a reducing sugar

Answer 10

C6H12O6

Glucose/Fructose(Isomer)