BIOLOGY CONNECT ACCESS CARD
12th Edition
ISBN: 9781264037452
Author: Raven
Publisher: MCG
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Question
Chapter 26, Problem 5S
Summary Introduction
To determine: The mass of virions in the Pacific Ocean.
Introduction: Viruses can be defined as acellular organisms that are obligate intracellular
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Check out a sample textbook solutionStudents have asked these similar questions
The molecular weight of the RNA of poliovirus is 2.6x106 amu. How long would it take for it to
travel the distance between two conversing people 1.0 m apart by diffusion in still air? (use very rough
assumptions: density of spherical virus is 1 gm cm-3 and viscosity of air 1.0x10-5)
Viruses are made up of the same biomolecules as cellular organisms (DNA, RNA, proteins, lipids, etc.). They infect cells and replicate themselves using resources from the host cells. Scientists discovered a previously unknown strain of virus in the tropical Pacific Ocean and it can infect higher-order eukaryotes. Initial analysis revealed that the virus is mainly composed of nucleic acids, proteins, and lipids. Chemical analysis after complete hydrolysis revealed the following building blocks (by weight):
Chemical components
Nucleosides
Amino acids
Lipids, phosphates, and carbohydrates
Percentage by weight
20
30
50
Analysis of percentages of nucleosides yielded the following results (by molar ratio):
Nucleosides
A
G
T
C
U
Percentage by mole
19
29
19
29
4
Researchers determined that the lipids found in the virus form a bilayer membrane surrounding the virus, and are obtained from the membrane of the host cell during virus maturation and exit from host cell.
Further…
The SIR model of pandemics (such as COVID-19) considers three variables: S (those
susceptible to the disease) I (those infected with the disease), and R (those recovered or
removed from the illness). This model has a system of three differential equations, one for
the derivative of each variable. We viewed the video entitled "The Coronavirus Curve -
Numberphile," and we also rebuilt this model in Geogebra ourselves.
That model includes two constants, "transm" and "recov:" use Ct instead of "transm," and
use cr instead of "recov." In Geogebra, we could tweak these values.
a. In this system, what is the equation for S'(t) = dS/dt?
b. In this system, what is the equation for I'(t) = dI/dt?
c. In this system, what is the equation for R'(t) = dR/dt?
d. Who made this video?
Chapter 26 Solutions
BIOLOGY CONNECT ACCESS CARD
Ch. 26.1 - Prob. 1LOCh. 26.1 - Prob. 2LOCh. 26.2 - Prob. 1LOCh. 26.2 - Prob. 2LOCh. 26.3 - Prob. 1LOCh. 26.3 - Describe how viruses can contribute DNA to their...Ch. 26.4 - Describe the differences between acute and...Ch. 26.4 - Prob. 2LOCh. 26.4 - Prob. 3LOCh. 26.5 - Prob. 1LO
Ch. 26 - Prob. 1UCh. 26 - Prob. 2UCh. 26 - Prob. 3UCh. 26 - Prob. 4UCh. 26 - Why is a drug that blocks HIV binding to one of...Ch. 26 - Prob. 6UCh. 26 - Prob. 7UCh. 26 - Prob. 1ACh. 26 - Prob. 2ACh. 26 - Prob. 3ACh. 26 - Prob. 4ACh. 26 - Prob. 5ACh. 26 - Prob. 6ACh. 26 - Prob. 7ACh. 26 - E. coli lysogens derived from infection by phage ...Ch. 26 - Prob. 2SCh. 26 - Prob. 3SCh. 26 - Prob. 4SCh. 26 - Prob. 5S
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What Is A Virus ? ; Author: Peekaboo Kidz;https://www.youtube.com/watch?v=YS7vsBgWszI;License: Standard YouTube License, CC-BY