[TEA-Async-2024-25] ...

Proteins

1. Why can a protein be called a polypeptide but a polypeptide cannot be called a protein?
2. Explain how the 3-dimensional shape of proteins is formed.
3. Use a diagram to show how a peptide bond is formed between two amino acids.
4. Discuss some of the interactions that can occur between the R groups of an amino acid sequence.
5. Some features of amino acids are common while others are not. Explain.
6. How does having different R groups make amino acids ideal building blocks for proteins?
7. Why are some amino acids soluble in water while others are not?
8. Name three functions of proteins in a living organism.
9. Which elements are found in proteins but in neither carbohydrates nor lipids.
10. What type of compound is shown below?
11. What functional groups are present in both the compounds found below? Circle and label all of the functional groups visible.
12. Describe what would have to occur to link the two compounds below together. What substance is removed (produced)?
13. What is the name of the bond this is formed between these two compounds?

Nucleic Acids

1. Which element is found in nucleic acids but in neither carbohydrates nor proteins?
2. You connect a molecule of ribose, a phosphate, and a molecule of cytosine. What have you made?
3. What does a nucleotide consist of?
4. What are the five nitrogenous bases found in nucleic acids?
5. Differenticate between DNA and RNA.
6. What type of bonds hold the sugar phosphate backbone of DNA & RNA together?
7. What type of bonds hold the nitrogenous bases of DNA together?
8. What is ATP?