Beta-lactam antibiotics work by? O A. cleaving peptide side chains O B. preventing cross-linking of the peptide side chains by transpeptidase O C. cleaving the 1,4 beta-glycosidic bond between the NAM and NAG © D. inhibiting the action of bactoprenol O E. preventing peptidoglycan from being flipped to the external side of the plasma membrane

Beta-lactam antibiotics work by? O A. cleaving peptide side chains O B. preventing cross-linking of the peptide side chains by transpeptidase O C. cleaving the 1,4 beta-glycosidic bond between the NAM and NAG © D. inhibiting the action of bactoprenol O E. preventing peptidoglycan from being flipped to the external side of the plasma membrane

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter9: Gene Expression And Gene Regulation

Section: Chapter Questions

Problem 1CS: There have been recurring cases of mad-cow disease in the United Kingdom since the mid-1990s....

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a. What is the function of bactoprenol in peptidoglycan synthesis? b. During peptidoglycan synthesis, removal of a phosphate group from bactoprenol pyrophosphate is inhibited. What is the immediate outcome? What does this mean for cell wall synthesis? Which antibiotic works via this mechanism? c. Bacterium Y is photosynthetic. You want to decrease the ability of Bacterium Y to produce glucose through photosynthesis. Explain how you could manipulate the light reactions of photosynthesis to decrease glucose production during the dark reactions in Bacterium Y. Include the name of the pathway that makes glucose during the dark reactions, which/how molecules from the light reactions are used in this pathway, and what specific steps of this pathway would be affected by your manipulations.
Match the subfamilies of HSPGS withe their examples v syndecans and CD44V3 A. GPI-linked proteoglycans v glypicans B. Membrane-spanning proteoglycans v perlecan and collagen XVII C. Secreted ECM proteoglycans v agrin -
mutate all of your D-form amino acids in your peptidoglycan peptide side chains to L forms. What have just done to your peptidoglycan? • A. You prevent lysozyme from being able to work • B. You prevent NAM and NAG from linking together C. You have made it susceptible to degradation by proteases • D. You prevent it from being flipped from the cytoplasm across the plasma membrane O E. Nothing, there is no difference between the L and D forms of amino acids
4. Peptidyl transferase activity... True False i. catalyzes peptide bond formation. ii. is an enzymatic function of proteins found in the large ribosomal subunit. iii. joins amino acids on tRNAs in the P and E site of the ribosome. iv. requires GTP hydrolysis by the elongation factor.
Which is most important in catalysis of peptidyl transfer? A Massively parallel sequencing data collection based on nanofluidics and nanoimaging b Release of histamine by mast cells in response to wound c Assist by 2+-OH on A76 ribose of p- site RNA d Complement system of 20-30 proteins in coordinated innate immune response e Nucleophilic attack on incoming dntp by 3-OH on deoxyribose at 3 ' end of primer
charge Some bacterial pathogenic strains have the ability to evade the action of antibiotics. How? What could be some of the possible ways? molecu does. https://ma Турes (Select those that apply) Select one or more: People a. Bacteria is always susceptible to antibiotics and are always killed by antibiotics! Can water b. Bacteria can regulate its gene expression to produce an impermeable lipid membrane to evade antibiotics." Does a cov c. Bacteria produces a special reverse transcriptase that aids bacteria to evade Is water a n antibiotic stress. What would d. Bacteria can produce enzymes that can chemically deactivate some antibiotics. e. Bacteria can regulate its gene expression to activate certain efflux pumps to evade V antibiotics. https://sciencing What Happ Mar 13, 2018 - These molecules ( Previous page Next page https://bio.libretext 2.2A: Water's 742 MacBook Pro Q esc ! @ # $ % & 1 2 3 4 Q W E R Y tab A S D F G caps lock CO
9. In which cellular compartments does mucin-type O-glycan biosynthesis occur in mammalian cells? Select all that apply. a. ER b. Golgi c. Plasma Membrane d. Mitochondria e. Nucleus 10. Identify the five nucleotide sugars NOT FOUND in animal cells. UDP-Glc UDP-GlcNAc UDP-Man UDP-Gal CMP-Fuc UDP-IdoA UDP-Xyl GDP-GalNAc CMP-Sia GDP-GlcA 11. Name at least two factors that determine glycan diversity during their biosynthesis. Availability of nucleotide sugars Expression of glycosyltransferases Nucleotide sugar biosynthetic enzymes The types and abundance of glycosyltransferases Flux through the ER and Golgi
Match the letter in the diagram with the accumulation or localization of active or about to be active protein in a given cellular contacts which is wild type unless specified. 1. Plasma membrane v-snare 2. Endosomal v-snare 3. Dynamin 4. A protein with n-sig only in a class e yeast mutant Match with A, B, C, D on diagram
Retroviruses such as HIV, Herpesviruses, and Hepatitis B can be effectively inhibited by _____. Mark all that apply: A. inhibition of cell wall synthesis B. inhibition of ergosterol C. disruption of the ETS in infected cells D. nucleoside analogs such as acyclovir
Antisense therapeutics are important because: Select one: O a. They only act at the ribosome O b. They can be easily delivered to their sight of activity after systemic administration They can be found in large quantities in the Golgi O c. O d. They hybridise to the antisense strand of a DNA transcript Oe. They are being use as a routinely administered medicine Ribozymes are good candidates as molecular therapeutics because Select one: O a. They are more stable than DNA is body fluids Ob. They can easily cross biological barriers with out the aid of a drug delivery system Oc. They retain secondary structure that may point to an evolutionary link between RNA and protei They are more stable than many proteins in body fluids They can be encoded into a plasmid and delivered as a DNA based construct give both answer only with little bit explanation Asap Thanks d. O e.
Which of the following is incorrect? a. Protease inhibitors are small proteins that pose as protease substrates but are not completely hydrolyzed b. Trypsin is the zymogen of trypsinogen Oc. Proteases are synthesized in the form of inactive precursors called zymogens Od. Activation of zymogens requires removal of peptides
1. Using the sensitization and hypersensitive process for a Type I hypersensitivity as your model, please design a process (yes, this is hypothetical) that would make your type 1 diabetic patient's pancreas regain normal function. Please include in your answer the roles of DNA, ribosomes, the signal transduction process and the golgi apparatus in your design. In addition, please explain what causes a Type I hypersensitivity and physiological roles of the pancreas in the body. Last, why did you have to wait seven ten days before you removed your antibodies from your experimental animal? Hint: Use glucose or some other molecule as how pollen was used in the sensitization and hypersensitive process that was discussed in class. -