a. You have a plan to make the cellular signaling peptide RGD (Arg-Gly-Asp). If you are beginning from the Arginine (Arg) amino acid, which amino acid(s) will require NH2 protection to optimize the synthesis? A) All 3 amino acids will need NH2 protection B) Gly and Asp will need NH2 protection C) Arg and Gly will need NH2 protection D) Only Arg b. Which of the following amino acids will not produce a purple color (indicative of 2 ninhydrin molecules binding) when reacted with ninhydrin? A) phenylalanine B) valine C) proline D) histidine c. f you had a mixture of leucine, arginine, and glutamic acid in a pH of 6 and applied a drop onto paper connected to an electrophoresis apparatus. Which of these would move toward the cathode (-). A) Leucine B) Arginine C) Glutamic Acid D) None of them d. True/False - Dicyclohexylcarbodiimide is a typical reagent in peptide synthesis for protecting carboxylic acid groups. e. True/False t-butoxycarbonyl dicarbonate (Boc20) adds a t-butoxy carbonyl group to the amine portion of the amino acid creating an amide (carbamate) and protects the amine portion from side reactions.

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Can you explain how to find what mutation 2 is with elaborate step?

1. "Interferons (IFNs)‐α and ‐β are expressed in response to a virus infection and are released from the cell in which they are produced. IFNs induce an antiviral state in other neighboring cells. a. Which cellular process is inactivated when IFN‐treated cells are infected with a virus? b. One arm of the IFN‐induced antiviral state is the synthesis of 2′,5′‐oligoA in response to viral infection. In one sentence or a simple diagram, what is the effect of this on the cell? c. Another arm of the IFN‐induced antiviral state is activation of the protein kinase in response to viral infection. In one sentence or a simple diagram, what is the effect of this on the cell? d. All cells contain the genes for IFNs. IFN synthesis is stimulated by virus infection. Would you expect a cell that has been treated with IFN to synthesize IFN in response to a viral infection? Explain your answer."

The figure  from Moore (2020) shows a G protein-coupled receptor in a membrane. Note that "out" means outside the cell and "in" means facing the cytoplasm. The three amino acids "DRY" in loop I2 are required  for protein targeting. What is the name of this kind  of sequence, and what is its function? What protein targeting sequence is no longer included in this diagram? Why? The sequence "QXXNK" (where X is any amino acid) found in loop I3 has been identified based on its enzymatic activity. What is this activity? What particular domain would you expect to find in either Loop E1, E2, or E3?  The gene that codes for this protein is a member of  a family of genes that has arisen over evolutionary time. If you compared several of the genes in this family, would you expect their sequences to be most homologous (similar) in the region you describe in #3 above or #4 above? Why?

What does it mean when a person is lactose intolerant? Biologically, what causes this? How can it temporarily be treated?

Explain karyopherin exportins? What is it? What is its function? Why is iş important for the nucleus?

What is the result when the core histones are acetylated via histone acetyltransferase? A) The result depends on which histone is modified. B) The DNA becomes more tightly associated with the core. O C) The DNA becomes less associated with the core. This modification has no effect on how tightly associated DNA will become with the core.

Only answer please, no need to explain… Thank you for your time. i:  Modification of the 5 prime ends of eukaryotic mRNA is called? a) Capping b) Polyadenylation c) Splicing d) Transcription ii: Genetic Code is? a) The sequence of Nitrogenous Bases in mRNA that codes for a protein b) Is a Triplet Code      c) is Non-Overlapping      d) All of these iii. The process of formation of RNA is known as a) Replication          b) DNA repair         c) Translation           d) Transcription iv. Which of the following statement is NOT true regarding transcription/RNA synthesis? a) RNA synthesis occurs in the nucleus b) Unlike DNA synthesis, the only selective sequence of DNA is transcribed to RNA   c) RNA synthesis requires a short stretch of RNA primers d) DNA sequences, specific proteins, and small RNAs regulate RNA synthesis

Kinases, in general, are enzymes that   Question 8 options:   A)  are always covalent modification, inhibitors.   B)  do not alter target activity.   C)  add phosphate groups to usually serine, tyrosine, or threonine.   D)  remove phosphate groups from serine, tyrosine, or threonine.   E)  all of the above