1. What does Chargaff’s rules mean? 2. What are the two types of nucleic acids, and what are their main differences?
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1. What does Chargaff’s rules mean?
2. What are the two types of
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- 1. Define nucleic acids. Mention the types and parts of nucleic acids2. What are the monomers that make up nucleic acids?3. How do RNA and DNA differ?3. The following structures are the components of nucleic acid. CH2OH ОН NH2 ОН ОН A (a) Which type of base is the molecule B? (b) Is molecule A be found in DNA or RNA? Explain. (c) Draw a nucleoside using the appropriate structures provided above. While drawing the structure, also consider the conformation. 7 (d)What are the differences between the structure of dATP from the structure vou draw in (c)? (e) Fill in the blanks for the relative percentage of bases in a DNA. А G T 13 15 Strand 1 12 Strand 27. Hydrogen bonds are a crucial component of biomolecular structure and biomolecular interactions. In the following drawings, draw in several hydrogen bonds that are possible between atoms within the same molecule or between different molecules: A: Protein structure H₂C₁ #1 N-H N-C 0=C HR 1 N-H ORU 0=C N-HH-CR B: DNA base-pairing H H-N N-H N=C C-C H 0=C NIH C C=N HR 0=3₁ HR H-9-4 0-0 NIH N-H 0=C 0=0 RECH N-H N-H 0=8-₁ OH HR C: Plant cell wall (cellulose) CH₂OH H BỆNH O=C HA CH OH H CH₂OH ( он H HC-0 CH₂₂OH H OH 1 TH OH H IN HC- OH H CH₂OH CH₂₂OH O OH H C-CH H bH CH₂₂OH VA HS COK H ОН Biomolecules like DNA, proteins, and carbohydrates depend on hydrogen bonds to maintain their overall structure. However, each individual hydrogen bond is relatively weak. Using protein structure from the question above as an example, explain how to resolve the apparent contradiction between these two statements.
- 1) Distinguish Ionic, Covalent, Hydrogen Bonding, and Van der Waals (Hydrophobic). 2) Distinguish DNA from RNA, what is the same, what is different? Importance in function?. What is the difference between a nucleotide and a nucleoside.8. The following proteins represent a wide range of molecular weights and isoelectric points. Mr is the molecular weight of a single protein chain. • Protein 1: Mr 68,544; pl 6.11 (monomer) • Protein 2: Mr 29,041; pl 5.32 (dimer) • Protein 3: Mr 15,805; pl 5.7 (dimer) • Protein 4: Mr 12,165; pl 4.74 a. Which protein is the most acidic? Explain your answer. b. Which protein will migrate the slowest in an SDS-PAGE? Explain your answer. c. In what order will these proteins elute from a cation exchanger at pH 8? Explain your answer. d. In what order will these proteins salt out from a pH 7 solution by the dropwise addition of saturated ammonium sulfate? Explain your answer. 83°F 立14. What are the functions of nucleic acids? Please explain
- 1. Define proteins 2. Discuss the different properties of proteins 3. Discuss the classification proteins based on the structure of protein 4. Discuss the classification proteins based on composition 5. Discuss the classification proteins based on functions 6. Discuss the solubility of protein in water 7. Discuss the denaturation and renaturation 8. Discuss the protein metabolism 9. Discuss the chemical properties of protein 10. Define amino acids 11. Discuss the non-essential and essential amino acids2. A functional protein that is approximately 110 kDa in size has all its cysteine residues joined with disulfide bonds. It has one cysteine residue per 100 amino acids. When heated at 85°C it lost activity, but when it was allowed to cool, the activity was restored? Please answer the following questions: a) How many disulfide bonds the protein has? Show how you came up with the answer. b) What is the molecular basis for the protein behavior in restoring activity?A) What is the difference between a nucleoside and a nucleotide? B) Give any two differences between DNA and RNA. C) Draw the structure of deoxyribose and ribose below, and number the carbons. What is the difference between the two structures? Please answer all 3 parts