Microbiology: Principles and Explorations
9th Edition
ISBN: 9781118743164
Author: Jacquelyn G. Black, Laura J. Black
Publisher: WILEY
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Chapter 7, Problem 11SQ
Summary Introduction
Introduction: The chief molecules of genetics are known as
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Chapter 7 Solutions
Microbiology: Principles and Explorations
Ch. 7 - Compare and contrast chromosomes in prokaryotes...Ch. 7 - DNA is not always the gemetic material. What are...Ch. 7 - How could mutations give rise to new alleles of a...Ch. 7 - How does trandlation differ from transcription?Ch. 7 - Distinguish between leading and lagging strands.Ch. 7 - What do 5 and 3 refer to? How do they determine...Ch. 7 - Contrast the three kinds of RNA. Does DNA make all...Ch. 7 - What feeds back in feedback inhibition? What does...Ch. 7 - What is the inducer for the lac operon?Ch. 7 - Compare enzyme induction and enzyme repression.
Ch. 7 - If you had be exposed to a mutagen,would you...Ch. 7 - How can a change in geneotype fail to produce a...Ch. 7 - Why are nitrates and nitrites, which have been...Ch. 7 - Cathy develops a painful cluster of blister-like...Ch. 7 - Prokaryotes usually have just one chromosome and...Ch. 7 - During the early stages of development of the...Ch. 7 - Suppose you are a medical technician working in a...Ch. 7 - Match the following terms with their descriptions:Ch. 7 - Prob. 2SQCh. 7 - Prob. 3SQCh. 7 - Match the following terms with their respective...Ch. 7 - From the DNA template sequence 3-ATGCAGTAG-5, what...Ch. 7 - What type of RNA carries and transfers amino acids...Ch. 7 - What type of RNA carries the genetic information...Ch. 7 - Which of the following statements does not...Ch. 7 - Prob. 9SQCh. 7 - For the lac operon, match the following:Ch. 7 - Prob. 11SQCh. 7 - A frameshift mutation occurs following the: (a)...Ch. 7 - Prob. 13SQCh. 7 - Which of the following schemes for molecular...Ch. 7 - Suppose a point mutation occurred in the third...Ch. 7 - Prob. 16SQCh. 7 - (a) Why are bacteria useful in the study of...Ch. 7 - DNA damage in the form of dimers induced by UV...Ch. 7 - Prob. 19SQCh. 7 - Name and describe the effects of the following...
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- Which of the following statements is/are correct?a) Enzyme quantities depend on the rate of their synthesis and degradationb) Enzyme quantity is decreased if an amino-acid involved in the catalytic activity is modifiedc) Protein kinase A activity is regulated through protein interaction.d) Kinases control the activity of other enzymes by covalent modification; irreversiblephosphorylation explain each of the following optionarrow_forward4. Hexokinase is kinase that catalyzes the phosphorylation of glucose by ATP to glucose-6-P, which can bind toits active site, blocking the access to ATP. Which of the following statements is/are correct regarding the typeof regulation?a) Phosphorylationb) Dephosphorylation.c) Feedback inhibition.d) Repression Explain each of the following optionarrow_forwardIn the ubiquitin-proteasome pathway of degradation, what component is most important in determining specificity when selecting proteins for destruction? a)ubiquitin b)E1 ubiquitin-activating enzyme c)E2 ubiquitin-conjugating enzyme d)E3 ubiquitin-protein ligase e)19S proteasomearrow_forward
- Which of the following components of the ubiqutin-proteasome pathway are ATPases? (i.e., which consume ATP in order to function?) (Select all that apply) a)E3 ubiquitin-protein ligase b)19S proteasome c)20S proteasome d)E2 ubiquitin-conjugating enzyme e)E1 ubiquitin-activating enzyme f)Ubiquitinarrow_forwardWhich of the following is true as it relates to the phosphorylation of enzymes? a) Phosphorylation of an enzyme changes its activity. b) Phosphates can be added to R groups of any amino acid. c) Phosphate groups are added by a class of enzymes known as kinases. d) a and c e) a, b and carrow_forwardWhich of the following about adenosine triphosphate (ATP) is FALSE? A) There are two phosphoanhydride bonds with similar energies B) ATP can be used as a substrate to make cyclic AMP (cAMP) after a cell has been stimulated with certain specific hormones C) The γ-phosphate can be transferred (e.g. to chemical group on a protein enzyme) such as the Na+-K+ pump, which is part of a coupling mechanism that allows otherwise unfavourable reactions to proceed No possible answer provided E) The large, negative, free-energy change upon hydrolysis of “high-energy” compounds like ATP is partly due to the creation of resonance stabilized productsarrow_forward
- Which of the following statements is CORRECT? A) Hexokinase IV is allosterically inhibited by glucose-6-phosphate. B) AMP is an allosteric inhibitor of phosphofructokinase-1. C) ATP functions as a chemical inhibitor of pyruvate kinase within muscle. D) Pyruvate kinase is allosterically activated by fructose-1,6-bisphosphate. E) A and D F) C and Darrow_forwardWhich of the following amino acids can act as nucleophiles in a protease active site (choose all that apply): a) Cysteine b) Alanine c) Leucine d) Serine e) Threoninearrow_forwardWhich of the following glycolytic enzymes is NOT subject to regulation a) Hexokinase b) PFK-1 c) Both GAPDH and Triose phosphate isomerase (TPI) d) Triose Phosphate Isomerase (TPI) e) GAPDHarrow_forward
- What signal does the chaperone-mediated autophagy pathway of protein degradation use to identify proteins for destruction? a)The amino acid sequence KFERQ b)HSP90 c)The presence of ubiquitin groups d)The amino acid sequence PESTarrow_forwardWhich of the following is CORRECT? A) Pyruvate kinase requires Mg2+ for maximal activity. B) A small change of ATP concentrations within a cell leads to large changes of AMP concentrations. C) A reduction of ATP concentrations will ultimately raise pyruvate kinase activity. D) All of the above. E) None of the above.arrow_forwardCarnitine acyltransferase I and II are required for: OA) transporting carnitine in the blood. OB) inserting carnitine into cell membranes. OC) translocation of fatty acids from cytosol to mitochondria. OD) transfer of ammonia to carnitine in the urea cycle.arrow_forward
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