ppt presentation
... – Translation of polymerase – RNA replication – Translation of viral proteins (polymerase, capsid, ….) – new virions spontaneously through „polymeration“ of capsid proteins on NA ...
... – Translation of polymerase – RNA replication – Translation of viral proteins (polymerase, capsid, ….) – new virions spontaneously through „polymeration“ of capsid proteins on NA ...
Taxonomy - bancejscience
... 1. No drug is available to _________ viruses in the body 2. Some viruses are ____________________ can remain dormant for years (hide inside cells) ex. a) Herpes Simplex Virus I (HSV I) (___________ _____________) b) HIV (____________) 3. some viruses are _____________________ • cause cells to beco ...
... 1. No drug is available to _________ viruses in the body 2. Some viruses are ____________________ can remain dormant for years (hide inside cells) ex. a) Herpes Simplex Virus I (HSV I) (___________ _____________) b) HIV (____________) 3. some viruses are _____________________ • cause cells to beco ...
Ch.19 Bacteria Viruses
... 3. Spore Formation occurs when conditions become ______________________. Endospore - ...
... 3. Spore Formation occurs when conditions become ______________________. Endospore - ...
Viruses
... Viruses: tools for Biotechnology • Phage viruses have become very useful in __________________________________ • Phage DNA is ________________ with DNA of interest (ex: human gene for insulin) • Phage is allowed to ____________________________. • Bacteria then produce large amounts of either _______ ...
... Viruses: tools for Biotechnology • Phage viruses have become very useful in __________________________________ • Phage DNA is ________________ with DNA of interest (ex: human gene for insulin) • Phage is allowed to ____________________________. • Bacteria then produce large amounts of either _______ ...
Viruses
... diseases in living things (HIV in humans, for example). Viruses are found everywhere. Viruses consist of a core of nucleic acid, either DNA or RNA, a protective coat of protein molecules and sometimes lipids. ...
... diseases in living things (HIV in humans, for example). Viruses are found everywhere. Viruses consist of a core of nucleic acid, either DNA or RNA, a protective coat of protein molecules and sometimes lipids. ...
Lecture 16: Spherical Virus Structures
... Minimum number of protein subunits that can form a virus shell with icosahedral symmetry is therefore equal to 60. >> Since there are 20 faces and each face has three subunits the total number of subunits is 3 x 20 = 60 ...
... Minimum number of protein subunits that can form a virus shell with icosahedral symmetry is therefore equal to 60. >> Since there are 20 faces and each face has three subunits the total number of subunits is 3 x 20 = 60 ...
Chpt 17 Viruses and Monerans - Virus a non
... Virus – a non-cellular particle made up of genetic material and protein that can invade living cells. Viruses are so small, they cannot be seen by a light microscope o As a result, the first discovery of a virus did not occur until 1935 (after the electron microscope was invented) We now know that t ...
... Virus – a non-cellular particle made up of genetic material and protein that can invade living cells. Viruses are so small, they cannot be seen by a light microscope o As a result, the first discovery of a virus did not occur until 1935 (after the electron microscope was invented) We now know that t ...
General Properties of Viruses
... Characteristics of Viruses Extracellular state Called virion Protein coat (capsid) surrounding nucleic acid Nucleic acid and capsid also called nucleocapsid Some have phospholipid envelope Outermost layer provides protection and recognition sites for host cells ...
... Characteristics of Viruses Extracellular state Called virion Protein coat (capsid) surrounding nucleic acid Nucleic acid and capsid also called nucleocapsid Some have phospholipid envelope Outermost layer provides protection and recognition sites for host cells ...
Foundations in Microbiology
... • Obligate parasites • Infect animals, plants, & other microbes • DNA viruses are usually doublestranded except for parvoviruses, which have ssDNA • Viruses are limited to a specific host or cell type ...
... • Obligate parasites • Infect animals, plants, & other microbes • DNA viruses are usually doublestranded except for parvoviruses, which have ssDNA • Viruses are limited to a specific host or cell type ...
Viruses, Prions, and Viroids:
... ______________ = dilution at which 50% of host cells are infected or killed ...
... ______________ = dilution at which 50% of host cells are infected or killed ...
(1) Replication of negative ssRNA viruses
... Two types of spikes project from the s urface: One is composed of H protein and the second of N protein. [Note: This is in contrast to the paramyxoviruses, in which H and N activities reside in the same spike protein.] Both the H and N influenza proteins are integral membrane proteins. The M (matrix ...
... Two types of spikes project from the s urface: One is composed of H protein and the second of N protein. [Note: This is in contrast to the paramyxoviruses, in which H and N activities reside in the same spike protein.] Both the H and N influenza proteins are integral membrane proteins. The M (matrix ...
Micro Notes
... 2. Adaptations for Genetic Variation Conjugation – a form of “sexual reproduction”. Involves direct transfer of a _plasmid___ from one bacteria to another via _pili____. A plasmid is a small, self-replicating piece of DNA separate from the main chromosome. Transformation – Direct uptake of DNA f ...
... 2. Adaptations for Genetic Variation Conjugation – a form of “sexual reproduction”. Involves direct transfer of a _plasmid___ from one bacteria to another via _pili____. A plasmid is a small, self-replicating piece of DNA separate from the main chromosome. Transformation – Direct uptake of DNA f ...
Ch 24 - Bacteria
... ◦ Viral RNA and reverse transcriptase are released into cytoplasm ◦ Rev.tran. Transcribes viral RNA into DNA ◦ Viral DNA inserted into hosts genome ◦ Called “Provirus” ...
... ◦ Viral RNA and reverse transcriptase are released into cytoplasm ◦ Rev.tran. Transcribes viral RNA into DNA ◦ Viral DNA inserted into hosts genome ◦ Called “Provirus” ...
Viruses and Bacteria
... A. Is a virus a living organism? 1. All living things are made of cells, able to grow and reproduce. 2. A virus IS able to do these things but ONLY inside a host cell. 3. Viruses cause diseases in many organisms. ...
... A. Is a virus a living organism? 1. All living things are made of cells, able to grow and reproduce. 2. A virus IS able to do these things but ONLY inside a host cell. 3. Viruses cause diseases in many organisms. ...
Human disease
... Replication of viruses in Eukaryotes • Typically much more complicated than for bacteriophage due to cell compartmentation (eukaryotic DNA synthesis occurs in nucleus, protein synthesis in cytoplasm). • Some viruses replicate in nucleus while other replicate in the cytoplasm. • Splicing and RNA modi ...
... Replication of viruses in Eukaryotes • Typically much more complicated than for bacteriophage due to cell compartmentation (eukaryotic DNA synthesis occurs in nucleus, protein synthesis in cytoplasm). • Some viruses replicate in nucleus while other replicate in the cytoplasm. • Splicing and RNA modi ...
AP Biology 12 Viruses
... D. An isolated virus is unable to replicate its genes or regenerate ATP. TRUE ...
... D. An isolated virus is unable to replicate its genes or regenerate ATP. TRUE ...
Paracytology and virology 2nd stage Germs: Viruses, Bacteria, and
... Germs: Viruses, Bacteria, and Fungi What is a germ? The term 'germ' actually refers to any microorganism, especially those microorganisms that cause disease. Included in this category are certain viruses, bacteria, and fungi. What is the difference between these three types of microbes? Which ones c ...
... Germs: Viruses, Bacteria, and Fungi What is a germ? The term 'germ' actually refers to any microorganism, especially those microorganisms that cause disease. Included in this category are certain viruses, bacteria, and fungi. What is the difference between these three types of microbes? Which ones c ...
viral_replication
... • Though the details of virus infection and replication vary greatly with host type, all viruses share 6 basic steps in their replication cycles. These are: – Attachment – Penetration – Uncoating – Replication – Assembly – Release • This is called lytic replication ...
... • Though the details of virus infection and replication vary greatly with host type, all viruses share 6 basic steps in their replication cycles. These are: – Attachment – Penetration – Uncoating – Replication – Assembly – Release • This is called lytic replication ...
Plant Viruses - rci.rutgers.edu
... Most all have protein coat* May of may not have lipid envelope May have broad or narrow host range Replication involves eclipse (breaking apart of virus particles) and reassembly • Use host factors for to complete replication cycle ...
... Most all have protein coat* May of may not have lipid envelope May have broad or narrow host range Replication involves eclipse (breaking apart of virus particles) and reassembly • Use host factors for to complete replication cycle ...
Viruses and Bacteria - Welcome to Mrs. Palmiter's World of
... Discuss how viruses cause disease ...
... Discuss how viruses cause disease ...
MIB 311 - Fountain University, Osogbo
... and bacterial viruses • Classification of viruses • viral replication strategies • Full description of select viruses ...
... and bacterial viruses • Classification of viruses • viral replication strategies • Full description of select viruses ...
The Discovery of Viruses
... of animals. Some Archaea live in extremely salty environments or in hot springs that approach the boiling temperature for water. ...
... of animals. Some Archaea live in extremely salty environments or in hot springs that approach the boiling temperature for water. ...
File
... It's easy to mix these up since compared to us, both are VERY SMALL. But... Bacteria, given the proper nutrients, can grow and reproduce on their own Viruses cannot "live" or reproduce without getting inside some living cell, whether it's a plant, animal, or bacteria. ...
... It's easy to mix these up since compared to us, both are VERY SMALL. But... Bacteria, given the proper nutrients, can grow and reproduce on their own Viruses cannot "live" or reproduce without getting inside some living cell, whether it's a plant, animal, or bacteria. ...
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.