Chapter 21 Viruses
... Living things vs Viruses Both contain protein, genetic material, and they can reproduce. Viruses cannot eat, grow, break-down food, or use oxygen. They must depend on their HOST Cell ...
... Living things vs Viruses Both contain protein, genetic material, and they can reproduce. Viruses cannot eat, grow, break-down food, or use oxygen. They must depend on their HOST Cell ...
Test Date - Humble ISD
... 2. Adaptations for Genetic Variation Conjugation – a form of “sexual reproduction”. Involves direct transfer of a __________________ from one bacteria to another via ________________. Transformation – Direct uptake of DNA from surroundings Transduction – Use of viral ________________________ t ...
... 2. Adaptations for Genetic Variation Conjugation – a form of “sexual reproduction”. Involves direct transfer of a __________________ from one bacteria to another via ________________. Transformation – Direct uptake of DNA from surroundings Transduction – Use of viral ________________________ t ...
Virus/Bacterial Worksheet
... 1. Where is the genetic material in a T4 bacteriophage located? 2. In general, is the genetic material in a virus inside or outside the protein parts? 3. Why do you think the word virus, based on the Latin word for poison, was used for these structures? ...
... 1. Where is the genetic material in a T4 bacteriophage located? 2. In general, is the genetic material in a virus inside or outside the protein parts? 3. Why do you think the word virus, based on the Latin word for poison, was used for these structures? ...
Chapter 13-Viruses. Viroids, and Prions
... -herpes simplex virus type 1(cold sores) -herpes simplex virus type 2 (genital ...
... -herpes simplex virus type 1(cold sores) -herpes simplex virus type 2 (genital ...
L9 viruses 7e
... -herpes simplex virus type 1(cold sores) -herpes simplex virus type 2 (genital ...
... -herpes simplex virus type 1(cold sores) -herpes simplex virus type 2 (genital ...
Viral Disease - School Portal
... and no metabolism of their own), and are very small compared to bacteria. They can be crystallised like a chemical, and stored. Viruses consist of a strand of nucleic acid (DNA or RNA) surrounded by a protein sheath called a capsid, built of many identical capsomeres (they have very few genes, so th ...
... and no metabolism of their own), and are very small compared to bacteria. They can be crystallised like a chemical, and stored. Viruses consist of a strand of nucleic acid (DNA or RNA) surrounded by a protein sheath called a capsid, built of many identical capsomeres (they have very few genes, so th ...
By route of transmission-1 - Arkansas State University
... • Lympho-civil war: cytotoxic T cells attack infected, altered B cells. • Same virus causes B cell cancer (Burkitt’s lymphoma) in Africa – Some relationship to malaria exposure ...
... • Lympho-civil war: cytotoxic T cells attack infected, altered B cells. • Same virus causes B cell cancer (Burkitt’s lymphoma) in Africa – Some relationship to malaria exposure ...
Contagion Worksheet
... 2. What U.S. government agency tracks diseases here in the U.S. (and monitors world diseases as well)? ...
... 2. What U.S. government agency tracks diseases here in the U.S. (and monitors world diseases as well)? ...
Biological Properties of Tomato apex necrosis virus (ToANV)
... http://www.wur.nl/NR/rdonlyres/F5732B48-8B0D-453C-A087-C1581C46B7DC/37632/tomatenvirus2.jpg ...
... http://www.wur.nl/NR/rdonlyres/F5732B48-8B0D-453C-A087-C1581C46B7DC/37632/tomatenvirus2.jpg ...
Bacteria & Viruses Chapters 24 & 25
... outer membrane of gram-negative bacteria, only released when organism dies Streptococci ...
... outer membrane of gram-negative bacteria, only released when organism dies Streptococci ...
Slide 1
... • Those with optima greater than 80°C are called hyperthermophiles. These organisms inhabit hot environments up to and including boiling hot springs, as well as undersea hydrothermal vents that can have temperatures in excess of 100°C. • Thermophiles and hyperthermophiles ...
... • Those with optima greater than 80°C are called hyperthermophiles. These organisms inhabit hot environments up to and including boiling hot springs, as well as undersea hydrothermal vents that can have temperatures in excess of 100°C. • Thermophiles and hyperthermophiles ...
Viruses: Bacterial and Animal
... intermediate stage (RNA) -three particles in blood Dane filamentous sphericle -exposure through blood/body fluids ...
... intermediate stage (RNA) -three particles in blood Dane filamentous sphericle -exposure through blood/body fluids ...
Viruses
... Methods of viral investigation • Centrifugation – diferencial centrifugation, ultracentrifugation, electrone microscopy • PCR, elektrophoresis, imunodetection, fluorescence microscopy • Cell cultures, animal models, plaque assays • Epidemiological methods, screening of population ...
... Methods of viral investigation • Centrifugation – diferencial centrifugation, ultracentrifugation, electrone microscopy • PCR, elektrophoresis, imunodetection, fluorescence microscopy • Cell cultures, animal models, plaque assays • Epidemiological methods, screening of population ...
Viruses - Humble ISD
... 1. Virus _____________ to the cell ____________________ of the host cell 2. Trick cell into allowing it inside 3. Virus releases its __________________________ (DNA or RNA) into the host cell - ____________________ – Viral DNA is ____________ - Transcription – Viral _______ is converted into _______ ...
... 1. Virus _____________ to the cell ____________________ of the host cell 2. Trick cell into allowing it inside 3. Virus releases its __________________________ (DNA or RNA) into the host cell - ____________________ – Viral DNA is ____________ - Transcription – Viral _______ is converted into _______ ...
Answers to Mastering Concepts Questions
... 1. A lytic viral infection is similar to a lysogenic viral cycle in that both allow viruses to reproduce. Whereas a lytic infection destroys a cell immediately, a lysogenic virus inserts its DNA into the host chromosome, where it is carried on into daughter cells. Eventually an environmental change ...
... 1. A lytic viral infection is similar to a lysogenic viral cycle in that both allow viruses to reproduce. Whereas a lytic infection destroys a cell immediately, a lysogenic virus inserts its DNA into the host chromosome, where it is carried on into daughter cells. Eventually an environmental change ...
Hershey`s work on T2 phage:
... What is T2 ? •The T2 phage is a strongly toxic bacteriophage and tadpole-shaped virus • small virus that infect only bacteria •Contain 50% DNA and 50% protein ...
... What is T2 ? •The T2 phage is a strongly toxic bacteriophage and tadpole-shaped virus • small virus that infect only bacteria •Contain 50% DNA and 50% protein ...
On March 3, 2014, the BBC reported that an ancient virus, found
... entity, this single cell Rip Van Winkle, being awakened from its long slumber, joined forces with other existing viruses. Many of its allies had long ago been rendered harmless to living creatures by nature and evolution. This new force, however, would not be denied. Much like how common bacteria an ...
... entity, this single cell Rip Van Winkle, being awakened from its long slumber, joined forces with other existing viruses. Many of its allies had long ago been rendered harmless to living creatures by nature and evolution. This new force, however, would not be denied. Much like how common bacteria an ...
How do viruses, bacteria, and protists effect our lives in both positive
... Many are parasitic. Some examples are: Plasmodium, a protist that cause malaria, Trypanosoma, a protist that cause African sleeping sickness, and dinoflagellate that cause the red tide. ...
... Many are parasitic. Some examples are: Plasmodium, a protist that cause malaria, Trypanosoma, a protist that cause African sleeping sickness, and dinoflagellate that cause the red tide. ...
ACADEMIC BIOLOGY: READING GUIDE for Ch
... _______________, ______ _________________, and ____________ to make copies of viral genes that ...
... _______________, ______ _________________, and ____________ to make copies of viral genes that ...
Size and Shape of Viruses
... Virus: infectious particle that contains DNA or RNA surrounded by a protein coat that can only reproduce in a host cell. Latin for “poison”. ...
... Virus: infectious particle that contains DNA or RNA surrounded by a protein coat that can only reproduce in a host cell. Latin for “poison”. ...
Viruses - North Mac Schools
... Can’t grow or respond to environment Can’t reproduce without host ...
... Can’t grow or respond to environment Can’t reproduce without host ...
Introduction to viruses
A virus is a biological agent that reproduces inside the cells of living hosts. When infected by a virus, a host cell is forced to produce many thousands of identical copies of the original virus, at an extraordinary rate. Unlike most living things, viruses do not have cells that divide; new viruses are assembled in the infected host cell. But unlike still simpler infectious agents, viruses contain genes, which gives them the ability to mutate and evolve. Over 5,000 species of viruses have been discovered.The origins of viruses are unclear: some may have evolved from plasmids—pieces of DNA that can move between cells—while others may have evolved from bacteria. A virus consists of two or three parts: genes, made from either DNA or RNA, long molecules that carry genetic information; a protein coat that protects the genes; and in some viruses, an envelope of fat that surrounds and protects them when they are not contained within a host cell. Viruses vary in shape from the simple helical and icosahedral to more complex structures. Viruses range in size from 20 to 300 nanometres; it would take 30,000 to 750,000 of them, side by side, to stretch to 1 centimetre (0.39 in).Viruses spread in many ways. Just as many viruses are very specific as to which host species or tissue they attack, each species of virus relies on a particular method for propagation. Plant viruses are often spread from plant to plant by insects and other organisms, known as vectors. Some viruses of animals, including humans, are spread by exposure to infected bodily fluids. Viruses such as influenza are spread through the air by droplets of moisture when people cough or sneeze. Viruses such as norovirus are transmitted by the faecal–oral route, which involves the contamination of hands, food and water. Rotavirus is often spread by direct contact with infected children. The human immunodeficiency virus, HIV, is transmitted by bodily fluids transferred during sex. Others, such as the Dengue virus, are spread by blood-sucking insects.Viral infections can cause disease in humans, animals and even plants. However, they are usually eliminated by the immune system, conferring lifetime immunity to the host for that virus. Antibiotics have no effect on viruses, but antiviral drugs have been developed to treat life-threatening infections. Vaccines that produce lifelong immunity can prevent some viral infections.