QUESTION 12A researcher named Erwin Chargoff determined the relative proportion of the different nucleotides in different speciesand came up with what we know today as Chargoff's rule.What is the percentage of Cytosine, if the percentage of Guanine is 24%?What would be the percentage of Adenosine in the same species?What would be the percentage of Thymine in the same species?

• Percentage of Cytosine (C): 24%• Percentage of Adenosine (A): 24%• Percentage of Thymine (T):…

Answered: QUESTION 12 A researcher named Erwin…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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QUESTION 16 Peptidyl transferase activity (peptide bond enzyme activity) is associated with what site in the ribosome? E P A X
Question 1: tRNA and amino acyl tRNA synthetases Part a: How many codons encode the amino acid Isoleucine (Ile, I)? Part b: How many codons encode the amino acid Valine (Val, V)? Part c: How many codons encode the amino acid Methionine (Met, M)? Part d: How many tRNAs decode the Ile codons? Part e: How many tRNAs decode the Val codons? Part f: How many tRNAs decode the Met codon?
Question 1: tRNA and amino acyl tRNA synthetases Part g: What chemical and structural characters are shared by the amino acids Ile, Val and Met? Part h: What enzyme attaches Ile to tRNA? Part i: Compare the frequency of the correct Ile entering the active site and the frequency of an incorrect amino acid entering the active site of this enzyme. Be specific with numbers. Part j: Compare the frequency of the correct tRNA(Ile) entering the active site and the frequency of an incorrect tRNA entering the active site of this enzyme. Be specific with numbers. Part k: Apply the Entropy change formula and multiply by T = 303 K (30 C) to determine the energetic cost of accurately attaching Ile to its cognate tRNA(Ile). Part l: Is there enough energy in the chemical transformation of ATP → AMP + 2Pi to pay this information cost?
QUESTION 22 The DNA sequences that are most conserved between human and mouse would most likely be located in: A Highly-repeated sequences, such as microsatellite regions B Highly repeated sequences, such as Alu sequences C Moderately-repeated non-coding sequences D Coding regions of single-copy genes
Question 4. If you were to synthesize a tetrapeptide consisting of all alanine residues, you would have how many bonds between carbon and nitrogen?
Question 1.)Draw the main chain structure of a parallel beta sheet that has 4 amino acids in one strand and 5 in the other. Show all of the backbone atoms.Write R1, R2, R3, etc, instead of drawing side chains with the following exception: draw one proline in its entiretywith its side chain. You can put it anywhere in your sheet – I will find it. Add in all hydrogen bonds that stabilize this sheet using dashed lines.
Question #6 Part A. What do Serine, Threonine, and Tyrosine have in common? Part B. How would the addition of a phosphate group change the chemical behavior of those amino acids listed in part A?
QUESTION 14 Which of the following best explains why there are 64 codons, but only20 amino acids for which they code? The genetic code is not ambiguous The genetic code is redundant, or degenerate There are different reading frames. RNA polymerase makes mistakes
Question 1: Your research project is concerned with the expression and purification of a protein called aldehyde dehydrogenase. Describe in detail all steps required from gene amplification to characterisation of the purified protein.
Question No.1 (1) A positive Tollen’s test classifies a monosaccharide as a reducing sugar. (2) The bond which links the two monosaccharides of a disaccharide together is a peptide bond. (3) Monosaccharides cannot be broken done into simpler units by hydrolysis reactions. Which of the following statements are true? Question No. 2 : Assuming that a strand of DNA has the following sequence: 5'-AACCGGTT-3' What is the sequence of complementary strand of DNA, from the 5' to the 3' direction?
question 38 The constant region of each heavy chain determines the class of the heavy chain. True False
Question 11. // Hint: Isoelectric focusing separates proteins based on their pI values, and can separate proteins that only differ by a net charge of ±1.±1. Recall that an amino acid residue with a negatively charged R group has a relatively low isoelectric point (pI) where it has zero net charge. Likewise, an amino acid residue with a positively charged R group has a relatively high isoelectric point (pI) where it has zero net charge. Order from Low pH to High pH

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