Macromolecules Quiz (BIO Lab)

distinct the difference between Qualitative and Quanitative

Qualitative = descriptive, non-numeric

Quantitative = numeric 

what were the following solutions used to identify in the different smoothies? (benedict’s, iodine, biuret, sudan IV)

Benedict’s - simple sugars (glucose)

Iodine - startch

Biurer (proteins)

Sudan - lipids

what is the monomer for proteins?

amino acids

what is the monomer for carbohydrates?

glucose/monosaccharides

do lipids have monomers of not what do they have?

they don’t have monomers, and they contain glycerol and fatty acids

what are the monomers in nucleic acids? 

nucleotides 

What is the purpose of amino acids in the cell?

antibodies, enzymes, transport, peptide hormones

what is the purpose of glucose/monosaccharides in the cell?

short-term energy

what is the purpose of glycerol and fatty acids in the cell?

steroids (estrogen and testosterone), long-term energy, cell membrane (phospholipids)

what is the purpose of nucleotides in the cell?

DNA and RNA 

You are using Benedict's solution on orange juice testing for glucose. The orange juice turns orange. Your positive control (glucose) was orange, and your negative control (water) was blue. What macromolecule is found in orange juice? 

carbohydrates (glucose)

To compare Oreos stuffing, you measured mass (g) between the 2 Oreo types (quantitative or qualitative)

quantitative

To observe the presence macromolecules in food, you use color indicator test for binary results based on color change (quantitative or qualitative)

qualitative

Why did we use oil as a positive control for the Sudan IV test (lipids)?

because it contains fatty acids and glycerol 

Why did we use water as a negative control for the Sudan IV test (lipids)

because water is a polar molecule and oils isn’t

Vaccines that trains your immune system to fight off a future infection. Which type of macromolecule is responsible for forming the antibodies that protect you?

proteins (amino acids)

Your cell membrane is a barrier, regulating the material going in and out of the cell. Which type of macromolecule is responsible for forming the cell membrane?

lipids (fatty acids and glycerol)

My mother's eye color is brown, and my father's eye color is brown. My eye colors are brown. These traits are passed down through genetic information. What macromolecule is responsible for making up my DNA?

nucleic acids (nucleotides) 

why is carbon so important in organic molecules?

Carbon forms the fundamental backbone of all organic molecules