Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 9, Problem 3VCQ
Figure 9.17 Which of the following statements about quorum sensing is false?
- Autoinducer must bind to receptor to turn on transcription of genes responsible for the production of more autoinducer.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
The 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 damage
Which of the following is not a mechanism of antibiotic resistance?
Inactivating the antibiotic
Mutating the target of the antibiotic
Pumping the antibiotic out of the cell
Production of adhesins that bind the antibiotic
Figure 14.23 shows a genetic switch that controls the choice between the lytic and lysogenic cycles of phage ?. What is a genetic switch? Compare the roles of a genetic switch and a simple operator site (like the one found in the lac operon) in gene regulation.
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...
Additional Science Textbook Solutions
Find more solutions based on key concepts
(a) What is the angular momentum of the Moon in its orbit around Earth? (b) How does this angular momentum comp...
College Physics
Fibrous connective tissue consists of ground substance and fibers that provide strength, support, and flexibili...
Human Biology: Concepts and Current Issues
Describe two hypotheses that explain why species diversity is greater in tropical regions than in temperate and...
Campbell Biology (11th Edition)
13. Figure 2.12 shows the results of Mendel’s test-cross analysis of independent assortment. In this experiment...
Genetic Analysis: An Integrated Approach (3rd Edition)
5. When the phenotype of heterozygotes is intermediate between the phenotypes of the two homozygotes, this patt...
Biology: Life on Earth
Why is an endospore called a resting structure? Of what advantage is an endospore to a bacterial cell?
Microbiology: An Introduction (13th Edition)
Knowledge Booster
Learn more about
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
- Which of the following is responsible for transferring iron into the cell? Transferrin receptor LDL receptor ESCRT Mannose-6-Phosphate receptorarrow_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_forwardIn quorum sensing, why might a bacterium synthesize more than one type of signaling molecule?arrow_forward
- Which of the following is a DNA element that instructs RNA polymerase where to bind on DNA?a) Operatorb) Promoterc) Enhancerd) Hormone response elementarrow_forwardIdentify which of the following statements is a lie? Select one: a. Bacterial biofilms due to quorum sensing can be found on medical equipment and implants such as hip or knee replacements or heart pacemakers. b. Quorum sensing uses autoinducers as signaling molecules. Autoinducers are signaling molecules secreted by bacteria to communicate only with the same species of bacteria. c. The first evidence of bacterial communication was observed in a bacterium that has a symbiotic relationship with Hawaiian bobtail squid.arrow_forwardQuorum sensing is one of the coolest things we've learned about this semester, because it is one way that bacterial cells can actually communicate with each other. Which are true about Quorum Sensing? (Choose all that apply.) Group of answer choices Quorum sensing depends on the sensing of signal protein molecules. Quorum sensing is a synonym for biofilms. Quorum sensing allows bacteria to monitor their own population density. Quorum sensing is present almost exclusively in non-pathogenic bacteria and does not contribute to virulence.arrow_forward
- What is the best explanation for why a bacteriostatic treatment might be chosen over a bacteriocidal treatment? Bacteriostatic treatments will eliminate all bacteria while bacteriocidal treatments will only eliminate a portion of the bacteria. Bacteriostatic treatments typically have lower toxicity to the host when compared to bacteriocidal treatments. Bacteriostatic treatments will prevent all bacterial growth, while bacteriocidal treatments will permit some bacterial growth. Bacteriostatic treatments are typically more costly than bacteriocidal treatments.arrow_forwardWhat are the 3 pillars of signal transduction that are employed by bacteria for communication? Describe, compare, and contrast each type. Cite an example and elaborate the pathway (i.e., molecular process).arrow_forwardThe purpose for blocking the membrane for western blotting with milk is: to allow antibodies from binding to the membrane to allow antibodies to bind to the membrane to prevent the antibodies from randomly binding to the membrane to allow for the visualization of the signalarrow_forward
- You are studying a type of bacteria isolated from the acidic water runoff of a mining operation. You subject two batches of the same bacteria type to different environmental growth conditions. One batch is grown at pH 2, while the other is grown at pH 7. All other environmental parameters are kept identical between the two batches. You then collect their proteins and run a Western blot using an antibody that binds to a proton efflux pump protein (which actively expends energy to pump protons out of a cell). How would you characterize the information obtained in this experiment? What does it tell you, and why is that potentially valuable information?arrow_forwardWhich of the following is NOT a method by which bacteria can be resistant to antibiotics? Select one: a. Utilise an alternate pathway of gene expression that is not targeted by the antibiotic. b. Alter the binding site of the antibiotic, to either prevent it binding, or remove it from the site. c. Production of enzymes that bind to and break down the specific antibiotic. d. Production of a cell membrane pump that translocates antibiotics outside the cell. A potential side effect of antibiotic use is a secondary bacterial or fungal infection, usually associated with regions like the skin, upper-respiratory tract or genitalia. What is the most likely reason for the formation of these secondary infections? Select one: a. Antibiotics do not work on viruses, so they are able to establish infections in these locations. b. Organisms that are antibiotic resistant are usually more virulent, meaning they can survive and cause infection. c. The antibiotic kills off normal flora, providing an…arrow_forwardA Cure for Beriberi In 1887, a strange nerve disease attacked the people in the Dutch East Indies. The disease was beriberi. Symptoms of the disease included weakness and loss of appetite. Victims often died of heart failure. Scientists thought the disease might be caused by bacteria. They injected chickens with bacteria from the blood patients with beriberi. The injected chickens became sick. However, those groups of chickens that were not injected with bacteria also became sick.One of the scientists, Dr. Eijkman, noticed something. Before the experiment, all chickens had eaten whole grain rice, but during the experiment, the chickens were fed polished rice. Dr. Eijkman researched this interesting case. He found that polished rice lack thiamine, a vitamin necessary for good health. Questions:1. What was the observation?2. What was the hypothesis?3. How was the hypothesis tested?4. What was the result of the experiment?5. What conclusion could be drawn?6. Which of…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Bacterial Genomics and Metagenomics; Author: Quadram Institute;https://www.youtube.com/watch?v=_6IdVTAFXoU;License: Standard youtube license