Campbell Biology 11th Edition - Valuepack
11th Edition
ISBN: 9780134833545
Author: Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece Neil A. Campbell Lisa A. Urry
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 19, Problem 8TYU
SCIENTIFIC INQUIRY When bacteria infect an animal, the number of bacteria In the body increases in an exponential fashion (graph A). After infection by a virulent animal virus with a Iytic replicative cycle, there is no evidence of infection for a while. Then the number of viruses rises suddenly and subsequently increases in a series of steps ($raph B). Explain the difference in the curves.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Viruses are obligatory parasites. When bacteriophages infect a cell, there would be two possible outcomes regarding the fate of that bacterium.
Can you describe the structures and life cycles of the T-even bacteriophage in detail?
You are studying a new retrovirus. The viral protein (X) appears to play a role in the export of the viral genomes to the
cytoplasm. Protein X brings viral DNA to the cytoplasm and returns back to the nucleus after genome export is complete.
Researchers have developed a new drug for the virus. Following treatment with the new drug, the viral protein stays in the
nucleus and cannot export the viral genomes. What is the most plausible and logical function of the drug? Use your
knowledge of nuclear transport to answer this question.
O A. The drug inhibits the binding of the viral protein and the viral genomes to the import receptor.
B. The drug inhibits the binding of Ran-GTP to the nuclear export receptor in nucleus.
C. The drug promotes the Ran GAP activity.
D. The drug blocks the NLS on the viral protein.
You have discovered a new disease-causing virus. It has a negative sense RNA genome. Infected
individuals often have few-to-no symptoms, but are continuously infectious to other individuals for
months after initial infection. Which of the following is likely true about this virus? (Select all that
apply)
Its genome must first circularize before being translated into proteins
It carries a replicase protein into a host cell upon infection.
The symptoms of this virus exemplify a latent infection.
The virus has infected every cell within an infected individual.
The virus must first synthesize the complementary strand RNA before expressing new proteins.
The symptoms of this virus exemplify a chronic infection.
Chapter 19 Solutions
Campbell Biology 11th Edition - Valuepack
Ch. 19.1 - Prob. 1CCCh. 19.1 - MAKE CONNECTIONS Bacteriophages were used to...Ch. 19.2 - Compare the effect on the host cell of a lytic...Ch. 19.2 - MAKE CONNECTIONS Compare the CRISPR-Cas system to...Ch. 19.2 - Prob. 3CCCh. 19.2 - Why is HIV called a retrovirus?Ch. 19.2 - Prob. 5CCCh. 19.3 - Describe two ways in which a preexisting virus can...Ch. 19.3 - Contrast horizontal and vertical transmission of...Ch. 19.3 - WHAT IF? TMV has been isolated from virtually all...
Ch. 19 - Are viruses generally considered living or...Ch. 19 - Prob. 19.2CRCh. 19 - Prob. 19.3CRCh. 19 - Which of the following characteristics,...Ch. 19 - Emerging viruses arise by (A) mutation of existing...Ch. 19 - Prob. 3TYUCh. 19 - Prob. 4TYUCh. 19 - Prob. 5TYUCh. 19 - DRAW IT Redraw Figure 19.8 to show the replicative...Ch. 19 - EVOLUTION CONNECTION The successof some viruses...Ch. 19 - SCIENTIFIC INQUIRY When bacteria infect an animal,...Ch. 19 - WRITE ABOUT A THEME: ORGANIZATION While viruses...Ch. 19 - Prob. 10TYU
Additional Science Textbook Solutions
Find more solutions based on key concepts
True or false? Some trails are considered vestigial because they existed long ago.
Biological Science (6th Edition)
Single penny tossed 20 times and counting heads and tails: Probability (prediction): _______/20 heads ________/...
Laboratory Manual For Human Anatomy & Physiology
How does the removal of hydrogen atoms from nutrient molecules result in a loss of energy from the nutrient mol...
SEELEY'S ANATOMY+PHYSIOLOGY
The validity of a scientific law.
Physical Universe
An obese 55-year-old woman consults her physician about minor chest pains during exercise. Explain the physicia...
Biology: Life on Earth with Physiology (11th Edition)
Q1. What is the empirical formula of a compound with the molecular formula
Chemistry: A Molecular Approach (4th 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
- The 1918 influenza strain killed millions of people world-wide. After recovering the virus from preserved lung tissue and sequencing the genome, which of the scientific findings did NOT account for the viruses lethality in humans? The hemagglutination protein was associated with high lung damage. The virus came directly from birds, without first circulating in pigs. The virus was independent from a cellular protease for cell entry, and utilized neuraminidase instead. The virus came from bats.arrow_forwardSuppose that a time machine allows you to go back in time (and to travel to Australia), and you have collected rabbits and Myxoma from the years 1955 and 1980. Once you are back in the twenty-first century, you infect both sets of rabbits with both sets of Myxoma viruses. The most likely result will be (1) that the rabbits from 1955 injected with the 1955 virus will have a survival rate than those same rabbits injected with the 1980 virus; and (2) that the rabbits from 1955 injected with the 1980 virus will have a survival rate than rabbits from 1980 injected with the 1980 virus.. A. lower; lower B. lower; higher C. higher; lower O D. higher; higher E. the survival rates will be the same in experiments (1) and (2)arrow_forwardThe diagram shows SEIV model of measles for children under pre-school. fl μ (1-P)A S BSI PA E V O T I In the transfer diagram, ^ is the rate at which individuals are born, p is the fraction of infants who are vaccinated, ß is the rate at which susceptible individuals become infected by those who are infectious, is the natural death rate, o is the rate at which exposed individuals become infectious, and is the rate at which infected individuals are treated and recovered with permanent immunity.arrow_forward
- "As the coronavirus spread globally, its genome changed — mutated — as expected for any virus. These mutations may affect the virus’s “fitness,” its ability to reproduce and spread. Some mutations weaken a virus, some have no measurable effect, and some make it stronger. There are many ways that a virus can mutate to increase its fitness. While there’s been much focus on changes in the virus’s spike proteins, which allow the coronavirus to invade cells, a virus can also sustain changes in other proteins. Such changes can allow the virus to replicate more easily or evade the immune system, for example. They may even allow the virus to persist longer in nasal passages. As a virus becomes more fit, it will outcompete less fit viruses — and Delta is not the first variant that has beat its predecessors and competitors in certain areas. There’s the Alpha variant that first became dominant in Britain, and the Gamma variant that first became dominant in Brazil. Such changes are not unique to…arrow_forwardQUESTION 1 Match each characteristic of a living organism to the best answer for a virus. Do viruses exhibit order? А. yes Do viruses reproduce? B. yes, but only by using the host's cells. C.no Do viruses grow and develop? D. Viruses interact with their environment but do not respond to it. Do viruses process energy? Do viruses regulate their internal environment? Do viruses respond to their environment? Do viruses evolve?arrow_forwardViruses display many of the characteristics of living organisms. In particular, they reproduce, creating new virus particles. During reproduction, viruses make copies of their genetic material, and some of the copies contain mutations that are beneficial to the virus. For example, HIV (human immunodeficiency virus), the virus that causes the disease AIDS (acquired immunodeficiency syndrome) mutates so often that its surface proteins change faster than we can develop antiviral drugs. New drug-resistant strains of HIV are appearing constantly. However, viruses can reproduce only after entering a living cell of an organism, because viruses hijack the cell’s machinery and use it to produce new viruses. Where does that combination of characteristics place viruses on the scale of nonlife to life? Are viruses living organisms? Nonliving? If neither of those categories fits the properties of viruses, how should they be classified?arrow_forward
- Viruses replicate by entering a cell and using the host cell's enzymes to produce more copies of itself. SARS-COV2 is a spherical virus that has been observed to be as small as 50 nm in diameter. If we approximate a human epithelial cell to be a cylinder with a 58 um height and 5 um diameter, what is the maximum number of SARS-COV2 viruses that could fit inside the cell?arrow_forwardThe Archaea is similar to the Eukarya in the following characteristic except? initiator 1RNA (protein synthesis) O 16S FRNA nucleotide sequence sensitivity to antibiotics types of RNA polymerase The Archaea differ from the Eubacteria in the following characteristic except: * O initiator tRNA (protein synthesis) origin of DNA replication sensitivity to antibiotics types of RNA polymerasearrow_forwardWhy can’t no one answer this question?arrow_forward
- A viral mutation that causes changes in the glycoprotein spikes would affect which aspect of the virus? The virus would become lysogenic and incorporate its genome into the host cell genome. The virus would enter the host by a combination of endocytosis and fusion. The virus would lose its viral envelope and become a naked virus. The virus would attach to different host cells and its host range would be altered. The viral genome would not require uncoating once inside the host cell.arrow_forwardAccording to Philip Bell’s viral eukaryogenesis hypothesis, genes for DNA replication, RNA transcription, protein translation, and histone proteins were all provided by: an endosymbiotic gram-negative eubacterium an endosymbiotic archaeobacterium a gram-positive eubacterial host cell a double-stranded DNA virus an archaeobacterial host cellarrow_forwardA bacterium is exposed to a drug that inhibits the N protein. Whatwould you expect to happen if the bacterium was later infected byphage λ? Would phage λ follow the lytic cycle, the lysogenic cycle,or neither? Explain your answer.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Epidemiological Studies - made easy!; Author: Let's Learn Public Health;https://www.youtube.com/watch?v=Jd3gFT0-C4s;License: Standard Youtube License