BIOLOGY 2E
2nd Edition
ISBN: 9781506699851
Author: OpenStax
Publisher: XANEDU PUBLISHING
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Textbook Question
Chapter 9, Problem 21RQ
Quorum sensing is triggered to begin when
- treatment with antibiotics occurs
- bacteria release growth hormones
- bacterial protein expression is switched on
- a sufficient number of bacteria are present
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Chapter 9 Solutions
BIOLOGY 2E
Ch. 9 - Figure 9.8 HER2 is a receptor tyrosine kinase. In...Ch. 9 - Figure 9.10 In certain cancers, the GTPase...Ch. 9 - Figure 9.17 Which of the following statements...Ch. 9 - Figure 9.18 What advantage might biofilm...Ch. 9 - What property prevents the ligands of cell-surface...Ch. 9 - The secretion of hormones by the pituitary gland...Ch. 9 - Why are ion channels necessary to transport ions...Ch. 9 - Endocrine signals are transmitted more slowly than...Ch. 9 - A scientist notices that when she adds a small,...Ch. 9 - Where do DAG and IP3 originate? They are formed by...
Ch. 9 - What property enables the residues of the amino...Ch. 9 - Histamine binds to the H1 G-protein-linked...Ch. 9 - A scientist observes a mutation in the...Ch. 9 - What is the function of a phosphatase? A...Ch. 9 - How does NF-kB induce gene expression? A small,...Ch. 9 - Apoptosis can occur in a cell when the cell is...Ch. 9 - What is the effect of an inhibitor binding an...Ch. 9 - How does PKC’s signaling role change in response...Ch. 9 - A scientist notices that a cancer cell line fails...Ch. 9 - Which type of molecule acts as a signaling...Ch. 9 - Quorum sensing is triggered to begin when...Ch. 9 - A doctor is researching new ways to treat biofilms...Ch. 9 - What is the difference between intracellular...Ch. 9 - How are the effects of paracrine signaling limited...Ch. 9 - What are the differences between internal...Ch. 9 - Cells grown in the laboratory are mixed with a dye...Ch. 9 - Insulin is a hormone that regulates blood sugar by...Ch. 9 - The same second messengers are used in many...Ch. 9 - What would happen if the intracellular domain of a...Ch. 9 - If a cell developed a mutation in its MAP2K1 gene...Ch. 9 - What is a possible result of a mutation in a...Ch. 9 - How does the extracellular matrix control the...Ch. 9 - A scientist notices that a cancer cell line shows...Ch. 9 - What characteristics make yeasts a good model for...Ch. 9 - Why is signaling in multicellular organisms more...Ch. 9 - Pseudomonas infections are very common in hospital...
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- Which of the following best describes the production of insulin in by bacterial cells. The biosynthetic pathway that produces human insulin is introduced into bacterial cells on a plasmid. Insulin is purified from bacterial lysates by electrophoresis. Human insulin in a peptide hormone comprised of two chains A and B. Only B chain is required, It is produced by injecting bacteria with MRNA encoding B chain peptide, and purifying the peptides with an antibody. Fuman insulin in a peptide hormone comprised of two chains A and B. It is produced by injecting bacteria with transgenic plasmids containing MRNA encoding either the A and B chain peptides, and purifying the peptides with a mix of antibodies against tne A or B chain. aman nsulina peptide hormone comprised of two chains A and B. They are produced separately as fusion proteins with beta-galactosidase when bacterial cells are transformed with plasmids containing either A or B chain with the lacZ sequence. Once purified they are…arrow_forwardWhat is the function of PRM?arrow_forwardWhich of the following antibiotic resistance mechanisms are most likely to be encoded by a single gene or operon that could be transferred between bacteria? The hydrophobic outer membrane of Gram-negative bacteria An enzyme that processes antibiotics to inactivate them A mutation in the DNA regulating gene expression that results in fewer antibiotic-accessible membrane porins in the cell wall Amembrane transporter that actively pumps antibiotics out of the cell An alteration in the antibiotic's binding site on its cellular target An enzyme that modifies an antibiotic so it can no longer bind its targetarrow_forward
- Which of the following is NOT true of eukaryotic response elements (RE)? options: their distance is usually flexible (distance-independent) they regulate how much transcription will occur they specify which strand of DNA is the template strand they are usually orientation-independentarrow_forwardIRE-1 activates the unfolded-protein response because of its ability to directly Cut proteins Cut RNA Synthesize lipids Activate transcriptionarrow_forwardProtein factor rho binds to the rho utilization site. O is part of Rho-dependent termination. two of the choices are correct. O all of the choices are correct. is essential in eukaryotes.arrow_forward
- A normal cell has no growth factor bound to the growth factor receptor. What do you predict about ERK in this situation? it will activate a transcription factor it will be phosphorylated it will not be phosphorylate it will not go into the nucleus Darrow_forwardGrowing cells outside the body needs laboratory space, aseptic techniques and special equipments such as incubator. The terminology use to say growing cells in lab is calledarrow_forwardPlz asap with explanationarrow_forward
- You can choose one or more than one option On gene expression control what are the correct statements? MOLECULAR BIOLOGY basic Eubacteria control translation of their mRNAs in their nuclei. RNA editing is a rare molecular process shared by Eukaryotes. Prokaryotes and Viruses The compactness of chromatin is the first point of gene expression control in Eukaryotes Bacterial transcription can be under either positive or negative control RNA interference leads to messenger RNA imRNA) digestion About the pituitary gland, what are the correct statements? PHYSIOLOGY basic Adrenaline is secreted by the pituitary gland The anterior pituitary gland is also called neurohypophysis. Anterior pituitary cells called somatotropic cells secrete growth hormone GH}. Posterior pituitary gland contains axons and axon terminals of numerous neurosecretory cells whose cell bodies are located in the hypothalamus. The pituitary gland secretes hormones that are peptides or small protein…arrow_forwardResponse elements are similar to operons in that they are controlled by a single promoter are enhancers of transcription activated by metabolic factors are not affected by steroids are silencers of transcription triggered by the presence of metal ionsarrow_forwardThe Minimum Inhibitory Concentration (MIC) is __________. - the concentration of antibiotic needed to prevent pathogenic bacteria growth - the concentration of antibiotic required to positively select for antibiotic resistance genes (ARG)arrow_forward
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