Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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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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- Comment the results of Figure 3arrow_forwardThe most selectively toxic antibacterial agents are those that interfere with bacterial cell wall synthesis. This is because ________. Group of answer choices bacterial cell wall synthesis is easily inhibited whereas eukaryotic cell wall synthesis is more resistant to the actions of the drugs bacterial cell walls have a unique structure not found in eukaryotic host cells eukaryotic cells do not take up the drugs eukaryotic cells inactivate the drugs before they can do any damagearrow_forwardWhich 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_forward
- Box one: • Human breast cancer cell line BT474, which overexpresses HER2, in 10 cm Petri dishes• Human HER3 ligand• Lapatinib• Lysis buffer A (containing 1% Triton and 0.1% SDS)• Lysis buffer B (containing no detergent)• Mouse anti-HER3 antibodies• Mouse anti-pY1289 of HER3, that recognises the phospho-tyrosine at position1289 of Her3• Mouse anti-actin antibodies• Horseradish peroxidase (HRP)-conjugated anti mouse IgG antibodies• SDS-PAGE Sample buffer (contains SDS, mercaptoethanol and bromophenolblue)• Molecular weight markers• SDS-PAGE gel• Nitrocellulose membrane• Phosphate buffered saline (PBS)• Blocking buffer (5%w/v BSA in PBS)• X-ray film• Luminol/H2O2 (hydrogen peroxidearrow_forwardIs the GASP phenotype present? In LB + NaCl? Un-Aged Cells Aged Cells LB culture Day 0 LB + NaCl culture LB culture Day 14 LB + NaCl culture •arrow_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
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