BIOLOGY
12th Edition
ISBN: 9781264839698
Author: Raven
Publisher: MCG CUSTOM
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 15, Problem 1U
The experiments with nutritional mutants in Neurospora by Beadle and Tatum provided evidence that
a. bread mold can be grown in a lab on minimal media.
b. X-rays can damage DNA.
c. cells need enzymes.
d. genes specify enzymes.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Which of the following best describes the mechanism of action of the antibiotic streptomycin?
A. it disrupts protein synthesis in resistant bacteria.
B. Streptomycin inhibits cell wall synthesis in all bacterial species.
C. Streptomycin creates mutations in bacteria which cause them to become resistant.
D. It disrupts protein synthesis in nonresistant bacteria.
The advantage of yeast cells over bacterial cells to express human proteins is that: a. yeast cells grow faster b. yeast cells are easier to manipulate genetically c. yeast cells are eukaryotic and modify proteins similarly to human cells d. yeast cells are easily lysed to purify the proteins
What are the main characteristics of genetically encoded calcium indicators: (can be more then one answer)
A.Always allow ratiomeric measurement of calcium signal.B.Can be modified by genetic engineering, allowing to change their property, such as fluorescence wavelength, sensitivity, etc.).C.Much less sensitive than chemical indicators.D.Must be transfected, unlike chemical indicators that must be injected or penetrated through the membrane.
Chapter 15 Solutions
BIOLOGY
Ch. 15.1 - Prob. 1LOCh. 15.1 - Prob. 2LOCh. 15.1 - List the roles played by RNA in gene expression.Ch. 15.2 - Prob. 1LOCh. 15.2 - Describe the characteristics of the genetic code.Ch. 15.2 - Prob. 3LOCh. 15.3 - Prob. 1LOCh. 15.3 - Differentiate among initiation, elongation, and...Ch. 15.3 - Prob. 3LOCh. 15.4 - Prob. 1LO
Ch. 15.4 - Prob. 2LOCh. 15.4 - Explain the differences between bacterial and...Ch. 15.5 - Prob. 1LOCh. 15.5 - Prob. 2LOCh. 15.5 - Prob. 3LOCh. 15.6 - Explain why the tRNA charging reaction is critical...Ch. 15.6 - Prob. 2LOCh. 15.7 - Prob. 1LOCh. 15.7 - Prob. 2LOCh. 15.7 - Compare translation on the RER and in the...Ch. 15.9 - Prob. 1LOCh. 15.9 - Explain the nature of triplet repeat expansion.Ch. 15.9 - Prob. 3LOCh. 15 - Prob. 1DACh. 15 - Prob. 2DACh. 15 - Prob. 1IQCh. 15 - Prob. 2IQCh. 15 - Prob. 3IQCh. 15 - The experiments with nutritional mutants in...Ch. 15 - What is the central dogma of molecular biology? a....Ch. 15 - In the genetic code, one codon a. consists of...Ch. 15 - Eukaryotic transcription differs from prokaryotic...Ch. 15 - An anticodon would be found on which of the...Ch. 15 - RNA polymerase binds to a ________ to initiate...Ch. 15 - During translation, the codon in mRNA is actually...Ch. 15 - You have mutants that all affect the same...Ch. 15 - The splicing process a. occurs in prokaryotes. b....Ch. 15 - The enzyme that forms peptide bonds is called...Ch. 15 - In comparing gene expression in prokaryotes and...Ch. 15 - The codon CCA could be mutated to produce a. a...Ch. 15 - An inversion will a. necessarily cause a mutant...Ch. 15 - What is the relationship between mutations and...Ch. 15 - Prob. 1SCh. 15 - Frameshift mutations often result in truncated...Ch. 15 - Describe how each of the following mutations will...Ch. 15 - There are a number of features that are unique 10...
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 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.) DNA encodes for the cell genome and is therefore a permanent copy to have a functioning cell. B.)Different changes to the structure of messenger RNA can cause mutations and genomic instability which could lead to abnormal cells in the body. a. Statement A is correct b. Statement B is correct c. Both A and B are correct d. Both A and B are incorrectarrow_forwardA particular strain of λ (lambda) can lysogenize its E. coli host at 30°C, but not at 42°C. Could a temperature-sensitive mutation in the int (integrase) gene explain this phenotype? A. There is insufficient information to answer the question. B. No C. Yesarrow_forward
- Which statement below best describes whether or not there is an advantage of using iPSCs to induce repair of bodily damage within a patient over using embryonic stem cells that have been donated? a. Because the iPSCs originated from the patient and thus probably will avoid rejection by the patient’s own immune system. b. Embryonic stem cells are easier to obtain. c. There are more ethical issues involved in iPSCs. d. Only embryonic stem cells are vastly renewable.arrow_forwardA biologist develops a new drug that seems to dramatically slow the onset of symptoms resulting from HIV infection. Close monitoring of HIV-infected cells reveals that the viral proteins are in the form of long polyproteins. What kind of drug did the biologist develop? A. It is a glycosyl transferase inhibitor. B. It is an integrase inhibitor C. It is a protease inhibitor. D. It is a CD4 inhibitor. please explain why which answer is correct and which is wrong and whyarrow_forwardWhich of the following can be used to grow and study viruses? A. embryonated eggs B. living animals. C. cell cultures D. continuous cell lines such as HeLa cells.arrow_forward
- The reason why Beadle and Tatum observed four different categories of mutants that could not grow on media without methionine is because a. the enzyme involved in methionine biosynthesis is composed of four different subunits. b. the enzyme involved in methionine biosynthesis is present in four copies in the Neurospora genome. c. four different enzymes are involved in a pathway for methionine biosynthesis. d. a lack of methionine biosynthesis can inhibit Neurospora growth in four different ways.arrow_forwardWhat potential problems must be considered in creating a transgenic bacterium with the human insulin gene isolated from genomic DNA to produce insulin? a. The genetic code of bacteria is significantly different from the genetic code of humans. b. The bacterial cell will be unable to posttranslationally process the insulin peptide sequence. c. There is no way to get the bacterium to transcribe high levels of a human gene. d. Both a and b present problems.arrow_forwardWhen Griffith injected mice with IIR strain mixed with heat-killed IIIS bacteria, A. The mice survived, and he recovered live type IIIR cells. B. The mice survived, and he recovered live type IIS cells. C. The mice died, but he recovered live type IIIR cells. D. The mice died, but he recovered live type IIS cells. E. The mice died, but he recovered live type IIIS cells.arrow_forward
- Nevirapine, an antiretroviral drug used to treat HIV acts as an uncompetitive inhibitor of the viral enzyme, reverse transcriptase (RT). Where does this inhibitor bind to prevent viral replication? Select one: a. The enzyme-substrate complex b. The viral DNA product c. Directly to reverse transcriptase d. The substrate Humans are able to break down amino acids, removing the amino group from the carbon skeleton and excreting waste as urea. Select the correct sequence of events in this metabolic pathway. Select one: a. Transamination, ammonia assimilation, deamination, ammonia metabolism b. Deamination, transamination, ammonia metabolism, ammonia assimilation c. Deamination, ammonia assimilation, transamination, ammonia metabolism d. Transamination, deamination, ammonia assimilation, ammonia metabolismarrow_forwardSome strains of Escherichia coli bacteria have acquired the ability to produce the harmful Shiga toxin, normally produced by Shigella dysenteriae. Which statements best explain why this occurs? Mark all that apply. A. conjugation between two different species of bacteria allowed both strains of bacteria to express a virulence factor B. transformation resulted in expression of a virulence factor C. horizontal gene transfer between different species of bacteria D. transduction of a specific gene resulted in expression of new traitsarrow_forwardYou would like to create an anti-viral medication that is active against both H5N2 and H5N1 strains of influenza. The best drug target would be: a. ribosomal protein production b. Hemagglutinin-mediated fusion c. Neuroaminidase-mediated buddingarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
What is cancer? What causes cancer and how is it treated? *UPDATE*; Author: Cancer Treatment Centers of America - CTCA;https://www.youtube.com/watch?v=_N1Sk3aiSCE;License: Standard Youtube License