Testing for Macromolecules

Bakara loves to eat fish which gives him the opportunity to eat more than just one healthy macromolecule. Which two macromolecules are in largest quantity in fish?

• lipid and carbohydrate

• lipid and protein

• protein and carbohydrate

• protein and vitamin C

When testing for proteins using Biuret solution the substance will turn shades of purple if protein is detected. The final outcome of this lab was that egg and milk had the most protein of all substances tested. Identify the dependent variable in this lab.

• type of substances chosen to tested

• color change based on protein detection

• amount of substance in each well

• amount of time it took to set up the lab

A lipid, does not mix with water because

• oil is a carbohydrate and nonpolar

• oil is a universal solvent and non polar

• oil is nonpolar and soluble in water which is polar

• oil is nonpolar and insoluble in water which is polar

A student has a rare disease that makes him allergic to protein. The student asks his teacher if he can test his lunch with a chemical indicator to see if it contains protein. Which test should the student perform?

• lugol's iodine

• sudan III

• biuret solution

• benedict's solution

A student is conducting tests for macromolecules and sees the following results. Which macromolecule must be present in this food sample?

• protein

• lipids

• simple sugars

• starch

A student is conducting tests for macromolecules and sees the following results. Which macromolecules must be present in this food sample?

• lipids

• proteins

• starches

• simple sugars

Students in biology class performed a lab to test various foods for the presence of macromolecules. A student recorded the data from the lab, but forgot to label which food they tested. Based on the results in the table, which food did the student most likely analyze?

• grilled chicken

• fried doughnut

• cheese

• raw potato

Which type of macromolecule is found in the cell membrane?

• lipids

• proteins

• nucleic acids

• carbohydrates

Which of the following tests for starch?

• Iodine

• Benedict's

• Biuret

• Emulsion

Which of the following tests for glucose?

• Iodine

• Benedicts

• Biuret

• Emulsion