ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
3rd Edition
ISBN: 9780135964422
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 14.4, Problem 1CC
What two processes ensure that the correct amino acid is added to a growing polypeptide chain?
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Which of the following correctly describes the 3 amino acids that are most likely to undergo phosphorylation?
a) Serine, threonine, tyrosine
b) Cysteine, tryptophan, tyrosine
c) Serine, tyrosine, cysteine
d) Tyrosine, asparagine, serine
Q)
a) A protein gains a mutation of a surface exposed residue. The mutation is Arg --> Leu. Based on the sequence of the protein when it folds the Leu remains on the surface of the protein. What is the change in chemical characteristic of the amino acid caused by this mutation?
b) Briefly explain any entropic consequences of this mutation. (2 sentences MAX)
c) What might happen in order to overcome these entropic consequences and how would that affect the cell? (1-2 sentences)
How does an unfolded polypeptide chain acquire the form of the native protein?
Chapter 14 Solutions
ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
Ch. 14.1 - MAKE CONNECTIONS In a research article about...Ch. 14.1 - What polypeptide product would you expect from a...Ch. 14.1 - DRAW IT The template strand of a gene contains the...Ch. 14.2 - What is a promoter? Is it located at the upstream...Ch. 14.2 - What enables RNA polymerase to start transcribing...Ch. 14.2 - WHAT IF? Suppose X-rays caused a sequence change...Ch. 14.3 - Given that there are about 20,000 human genes, how...Ch. 14.3 - How is RNA splicing similar to how you would watch...Ch. 14.3 - WHAT IF? What would be the effect of treating...Ch. 14.4 - What two processes ensure that the correct amino...
Ch. 14.4 - Discuss the ways in which rRNA structure likely...Ch. 14.4 - Describe how a polypeptide to be secreted is...Ch. 14.4 - WHAT IF? DRAW IT Draw a tRNA with the anticodon...Ch. 14.5 - What happens when one nucleotide pair is lost from...Ch. 14.5 - Prob. 2CCCh. 14.5 - WHAT IF? DRAW IT The template strand of a gene...Ch. 14 - In eukaryotic cells, transcription cannot begin...Ch. 14 - Prob. 2TYUCh. 14 - The anticodon of a particular tRNA molecule is A....Ch. 14 - Prob. 4TYUCh. 14 - Which component is not directly involved in...Ch. 14 - Prob. 6TYUCh. 14 - Prob. 7TYUCh. 14 - Prob. 8TYUCh. 14 - Prob. 9TYUCh. 14 - SCIENTIFIC INQUIRY Knowing that the genetic code...Ch. 14 - Prob. 11TYUCh. 14 - FOCUS ON INFORMATION Evolution accounts for the...Ch. 14 - SYNTHESIZE YOUR KNOWLEDGE Some mutations result in...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Given this short polypeptide: Met-Ala-Gly-Ser A) Which is the amino terminal amino acid? B) How many amino acids are in this polypeptide? C) How many peptide bonds are in this polypeptide? D) Which amino acid has the smallest side chain? E) Which amino acid contains sulfur?arrow_forwardWhat is the base sequence of the segment of DNA that is responsible for the biosynthesis of the following hexapeptide? Gly-Ser-Arg-Val-His-Gluarrow_forwardAmino acids project from each polypeptide backbone in a β-sheet in an alternating fashion (oneabove the plane and the next below the plane – see Fig 3.8B). Consider the following proteinsequence: Leu-Lys-Val-Asp-Ile-Ser-Leu-Arg-Leu-Lys-Ile-Arg-Phe-Glu.a. Is there a pattern to these amino acids? If so, what is it? b. What does this sequence of amino acids mean for the hydrophobicity/hydrophilicity of theresulting β-sheet? c. Can you make a prediction about how the β-sheet will be arranged in higher levels of protein structure? If so, what prediction would you make?arrow_forward
- What results in the alteration of amino acid sequences during polypeptide formation in protein synthesis? A defective polypeptide may arise because of a change in its amino acid sequence Despite the change in amino acid sequence, the polypeptide formed will always be functional and will never cause a disease. The cell will have no other choice but to revert the faulty polypeptide into amino acids to undo its work. The nucleus, by means of its powerful enzymes, will eventually destroy the damaged protein so that it will not wreak havoc in the cell.arrow_forwardWhat is the role of ATP(CTP): tRNA nucleotidyletransferase?arrow_forwardA DNA strand consists of any sequence of four kinds of nucleotides. Suppose there were only 14 different amino acids instead of 20. Which of the following statements would be correct descriptions of the minimal number of nucleotides necessary to create a genetic code? a) 1 b)2, provided that chain termination does not require a special codon c) 3, provided that chain termination does require a special codon d)2, no matter how chain termination is accomplished e) Both b and carrow_forward
- Phosphorylation is a very common post-translational modication (PTM) to regulate protein function. Which amino acids are most commonly regulated by phosphorylation? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Leucine, arginine, serine. b Tyrosine, arginine, glutamine. C Serine, threonine, tyrosine. d Glutamine, arginine, tyrosine. e Serine, tyrosine, glutamine.arrow_forwardWhen glycoproteins are synthesized in the cell, at what stage of the polymerization of the protein are the sugar groups added: Prior to translation, cotranslationally, or posttranslationally?arrow_forwardWhat is the name of the process by which amino acids arelinked together in the correct order based on an RNA sequence?arrow_forward
- If a protein is created via the translation of 705 nucleotides, including a start and a stop codon, how many amino acids are included in the final product?arrow_forwardLactose permease, a protein of E. coli, is composed of a singlepolypeptide that is 417 amino acids in length. By convention, theamino acids within a polypeptide are numbered from the aminoterminalend to the carboxyl-terminal end. Are the following questionsabout lactose permease true or false?A. Because the sixty-fourth amino acid is glycine and the sixty- eighth amino acid is aspartic acid, the codon for glycine,64, is closer to the 3′ end of the mRNA than the codon for aspartic acid, 68.B. The mRNA that encodes lactose permease must be greater than1241 nucleotides in length.arrow_forwardCompare the pathways of purine and pyrimidine nucleotide synthesis with respect to (a) precursors, (b) energy cost, (c) acquisition of the ribose moiety, and (d) number of enzymatic steps.arrow_forward
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