Lab Assignment 6 - Introduction to Food Macromolecules
Which of these is an aldehyde?
(a)
Which of these is the structure of trans fat?
(c)
Some macromolecules are polymers. What is a polymer?
A long molecule that consists of repeating units
Which of the following is a secondary protein structure?
Alpha-helix
Click on the tube that contains food with a high amount of starch.
Black tube (Baked potato iodine mix)
Click on the food that contains a high amount of lipids.
Butter
On these labels, what molecule does insoluble fiber refer to?
Cellulose
Click on the food that contains a high level of protein.
Chicken breast
Delicious time to make a hypothesis. We are curious about Alice's cabbage salad. What type of macromolecules do you hypothesize to primarily find in Alice's salad?
Complex carbohydrates
Click on the positive control of the Biuret assay.
Dark purple (Eggs Biuret mix)
What should Alice add to her salad to provide the missing macromolecules she needs?
Egg and avocado
Which of the following molecules is NOT a macromolecule?
Gluclose
Click on the tube that contains only a low level of gluclose.
Green tube (Baked potato Benedict's mix)
The linear sequencce of amino acids within a protein is considered the [blank] structure of the protein.
Primary
Benedict's reagent detects the presence of simple sugars in food. What color indicates the presence of a high level simple sugars?
Red
Click on the food that contains a high amount of carbohydrates.
Rice
Click on a test tube with high fat content.
Second tube (Milk sudan mix)
Which level of protein structure is formed by the weak bonds between oxygen and hydrogen atoms within a polypeptide backbone?
Secondary structure
Which of the following is a carbohydrate?
Sucrose
The figure below shows a the structure of alpha and bet gluclose. What is the difference between the two?
The position of the hydroxyl group on carbon 1
A positive control is a sample known to give positive results for the given test. What is the purpose of a positive control?
Verify that the negative results are valid
Which sample contains no macromolecules at all?
Water
What forms after the glycosidic linkage reaction between gluclose and galactose is complete?
Water and lactose
Was your hypothesis right?
Yes
Which food contains carbohydrates, proteins, and fats?
Milk
What do you call a sample, for which no response is expected?
Negative control
Look at all this food! Are we allowed to eat it after the experiment?
No, we should eat the food in the lab
Which type of molecule are lipids mostly made of?
Non-polar molecules
What type of bond links amino acids together in a chain?
Peptide bonds
