biology week 7

Part A

ADDr Discussion "The Peanut Solution". 300 Words

In Chapter 5, we learned about the major classes of biological molecules. The PBS Video "The Peanut Solution" talks about a protein-based solution to make a peanut safe to consume for those with peanut allergies. 

Watch the video:  PBS "The Peanut Solution"Links to an external site.

https://pbsnc.pbslearningmedia.org/resource/bde0645f-9150-4a2e-a9ff-0577dc9d625e/nc-science-now-the-peanut-solution/?student=true&focus=true

In the video, describe the main scientific innovation (research) described in “The Peanut Solution”.  Why is this innovation important to society as more and more people suffer with peanut allergies? What challenges or limitations researchers may face in making hypoallergenic peanuts safe and effective for public use?

Chapter 5 Worksheet (out of 36pts)

Name__________________________

1. Fill out Table (5pts)

Name of Macromolecule	Generic Polymer Name	Generic Name of Monomer	Monomer Example	Bond Type	Function in Body
Carbohydrates	Polysaccharide
	N/A	Fats Phospholipids Steroids		Covalent bonds and ester linkages
					Speed up chemical reactions, cell movement, cell support, transportation,
	Polynucleotide				Stores information for synthesizing proteins

2. What are two common chemical groups found in sugars (2pts)?

3. Look at the images A and B below. Which image depicts a ketose? Which image depicts an aldose? Describe the difference between the two. (2pts)

B.

A.

4. Research the function of the hormone insulin. Describe the relationship between it and the storage polysaccharide glycogen. What might happen if our bodies did not secret insulin? (2pts)

5. Why is eating greens that contain high amounts of cellulose (like celery) good for digestion? (2pts)

6. Why can most animals digest starch, but not cellulose? (2pts)

7. Why are fatty acids acidic? (2pts)

8. The presence of a double bond in the fatty acid tails of a fat makes a difference in its shape. Describe the difference between unsaturated and saturated fats. (2pts)

9. Why are the heads of phospholipids hydrophilic? Why are the tails hydrophobic? Use this image to help you explain your answer (2pts)

10. What characteristics do all steroids (like cholesterol) have in common? What components make them different? (2pts)

11. Complete this table about the levels of protein structure. Some answers have been provided for you. (3pts)

Level	Description	Bonds/Interactions that give level its shape
		Hydrogen bonds between oxygen and hydrogen atoms in the amino acid backbone
	Shape results from the interactions between the side chains
Quaternary

12. Why is it so important that proteins are modified so that they have a specific shape? How might denaturation affect this aspect of proteins? (2pts)

13. Before DNA becomes a protein, it is first transcribed into ____________________. This process takes place in the ________________________ of the cell. (2pts)

14. Here is an image of a single strand of DNA. Label the two parts that are indicated. (4pts)

a.

b. Now describe the components of each of the parts that you labeled in the previous image.

15. Create the complementary strand of RNA for this sequence of DNA. Don’t forget to include 5’ and 3’ on the correct ends. (2pts)

5’ ATCGATTCGG 3’

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