General Properties of Viruses
... Hosts of Viruses Most only infect particular kinds of host’s cells Due to affinity of viral surface proteins or glycoproteins for complementary proteins or glycoproteins on host cell surface ...
... Hosts of Viruses Most only infect particular kinds of host’s cells Due to affinity of viral surface proteins or glycoproteins for complementary proteins or glycoproteins on host cell surface ...
What are Viruses?
... Contain RNA, not DNA Contain enzyme called Reverse Transcriptase When a retrovirus infects a cell, it injects its RNA and reverse transcriptase enzyme into the cytoplasm of that cell and it is able to make DNA ...
... Contain RNA, not DNA Contain enzyme called Reverse Transcriptase When a retrovirus infects a cell, it injects its RNA and reverse transcriptase enzyme into the cytoplasm of that cell and it is able to make DNA ...
Plant Viruses - rci.rutgers.edu
... Intracellular – require living cells RNA or DNA genome, not both* 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 ...
... Intracellular – require living cells RNA or DNA genome, not both* 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
... • 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 ___________ or copies of the ___________ ...
... • 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 ___________ or copies of the ___________ ...
Viruses and Bacteria
... The Latin term virus means poison or toxin. It consists of RNA and DNA surrounded by lipids and proteins. They cannot reproduce without a host cell. The virus will inject a material into the host cell to take over all it's functions. The cell will eventually reproduce, but reproduces the virus not i ...
... The Latin term virus means poison or toxin. It consists of RNA and DNA surrounded by lipids and proteins. They cannot reproduce without a host cell. The virus will inject a material into the host cell to take over all it's functions. The cell will eventually reproduce, but reproduces the virus not i ...
Virusesand Prions - Pandem-Sim
... Influenzas are named by a naming system accepted by the World Health Organization (and followed by the U.S. CDC) that takes into account multiple identification characteristics such as host of origin, geographic origin, strain, and year, but most flus are commonly referred to by their HA and NA numb ...
... Influenzas are named by a naming system accepted by the World Health Organization (and followed by the U.S. CDC) that takes into account multiple identification characteristics such as host of origin, geographic origin, strain, and year, but most flus are commonly referred to by their HA and NA numb ...
Lecture Outline - Biology Junction
... 7. With the invention of the electron microscope, these infectious agents could be seen for the first time. B. Viral Structure 1. A virus is similar in size to a large protein, generally smaller than 200 nm in diameter. 2. Many viruses can be purified and crystallized, and the crystals stored for lo ...
... 7. With the invention of the electron microscope, these infectious agents could be seen for the first time. B. Viral Structure 1. A virus is similar in size to a large protein, generally smaller than 200 nm in diameter. 2. Many viruses can be purified and crystallized, and the crystals stored for lo ...
Viruses and Bacteria
... Viruses Replicate Inside Living Cells • Viruses lack enzymes needed for metabolism and have no structures to make proteins • Use cells own machinery to replicate viruses • Pathogen: agent that causes disease – Viruses damage cells during replication ...
... Viruses Replicate Inside Living Cells • Viruses lack enzymes needed for metabolism and have no structures to make proteins • Use cells own machinery to replicate viruses • Pathogen: agent that causes disease – Viruses damage cells during replication ...
File
... In bacterial viruses, the cycle of viral infection, replication, and cell destruction is called the lytic cycle. After the viral genes have entered the cell, they use the host cell to replicate viral genes and to make viral proteins, such as capsids. The proteins are then assembled with the replicat ...
... In bacterial viruses, the cycle of viral infection, replication, and cell destruction is called the lytic cycle. After the viral genes have entered the cell, they use the host cell to replicate viral genes and to make viral proteins, such as capsids. The proteins are then assembled with the replicat ...
Ch.19 Bacteria Viruses
... Plants need N to make _______________, the building blocks of ____________. About 78% of the atmosphere is N2 gas but plants can not use it directly. Certain bacteria, Rhizobium, convert N2 into usable __________________ Legumes: Rhizobium bacteria live in ______________________________________ Ex. ...
... Plants need N to make _______________, the building blocks of ____________. About 78% of the atmosphere is N2 gas but plants can not use it directly. Certain bacteria, Rhizobium, convert N2 into usable __________________ Legumes: Rhizobium bacteria live in ______________________________________ Ex. ...
The Discovery of Viruses
... A lysogenic infection occurs when a virus enters a cell and doesn’t take over the cell ______________but will later cause disease. The viral DNA that becomes imbedded into the hosts DNA is called a ________________. Make a diagram using Figure 20-3 ...
... A lysogenic infection occurs when a virus enters a cell and doesn’t take over the cell ______________but will later cause disease. The viral DNA that becomes imbedded into the hosts DNA is called a ________________. Make a diagram using Figure 20-3 ...
Microbiology 2 - Viral disease
... Transmitted to other birds, e.g. poultry industry, high density and high virus titres Has transmitted to man in S. and S. East Asia Very high mortality in man (>50%) Human to human transmission not evident yet, but the virus may adapt. Serious threat. ...
... Transmitted to other birds, e.g. poultry industry, high density and high virus titres Has transmitted to man in S. and S. East Asia Very high mortality in man (>50%) Human to human transmission not evident yet, but the virus may adapt. Serious threat. ...
Viruses, Prions, and Viroids:
... bat Old Yeller humans (humans cannot transmit rabies to other humans) ...
... bat Old Yeller humans (humans cannot transmit rabies to other humans) ...
Viral Structure
... Virion Structure: In general: most viruses smaller than most bacteria Virion: complete infectious form of the virus particle o Capsid: encapsulates the genome; in some cases, surrounded by an envelope (derived from host cell membranes) ...
... Virion Structure: In general: most viruses smaller than most bacteria Virion: complete infectious form of the virus particle o Capsid: encapsulates the genome; in some cases, surrounded by an envelope (derived from host cell membranes) ...
Summaries II
... • DNA is a double-stranded molecule that forms a helical configuration and is measured in terms of numbers of base pairs. • The two strands in the double helix are antiparallel, but inverted repeats allow for the formation of secondary structure. • The strands of a double-helical DNA molecule can b ...
... • DNA is a double-stranded molecule that forms a helical configuration and is measured in terms of numbers of base pairs. • The two strands in the double helix are antiparallel, but inverted repeats allow for the formation of secondary structure. • The strands of a double-helical DNA molecule can b ...
CH 19 Viruses Virus Discovery Viruses were detected indirectly long
... Virus Discovery Viruses were detected indirectly long before they were actually seen. Tobacco mosaic disease stunts growth of tobacco plants and gives their leaves a mosaic coloration. In the late 1800s, researchers hypothesized that a particle smaller than bacteria caused the disease. In 1935, Wend ...
... Virus Discovery Viruses were detected indirectly long before they were actually seen. Tobacco mosaic disease stunts growth of tobacco plants and gives their leaves a mosaic coloration. In the late 1800s, researchers hypothesized that a particle smaller than bacteria caused the disease. In 1935, Wend ...
Bacteria_Vs_Virus_16 - Kenston Local Schools
... release their DNA into the cell. It can take over immediately or lie dormant for years The host cell does all the work, the viruses just gives the orders ...
... release their DNA into the cell. It can take over immediately or lie dormant for years The host cell does all the work, the viruses just gives the orders ...
Paracytology and virology 2nd stage Germs: Viruses, Bacteria, and
... Small infectious agents that cause diseases of plants. Viroids are agents that do not fit the definition of classic viruses. They are nucleic acid molecules (MW 70,000– 120,000) without a protein coat. Plant viroids are single-stranded, covalently closed circular RNA molecules consisting of about 36 ...
... Small infectious agents that cause diseases of plants. Viroids are agents that do not fit the definition of classic viruses. They are nucleic acid molecules (MW 70,000– 120,000) without a protein coat. Plant viroids are single-stranded, covalently closed circular RNA molecules consisting of about 36 ...
MYXOVIRUSES
... It is the process in which the genetic segment encoding for envelope glycoproteinacs (HA&NA) is replaced by another one from a different strain through genetic reassortment causing replacement of the original HA or NA by a new one Genetic reassortment: the exchange of genetic material between viruse ...
... It is the process in which the genetic segment encoding for envelope glycoproteinacs (HA&NA) is replaced by another one from a different strain through genetic reassortment causing replacement of the original HA or NA by a new one Genetic reassortment: the exchange of genetic material between viruse ...
Viruses
... **Remember ALL viruses are parasitic which means they require a living host and they cause harm to that host** ...
... **Remember ALL viruses are parasitic which means they require a living host and they cause harm to that host** ...
Biological Hazards
... water so the water supply is used for drinking, washing and sewage disposal. These are good breeding grounds for pathogens. Organisms that transmit diseases are called vectors. ...
... water so the water supply is used for drinking, washing and sewage disposal. These are good breeding grounds for pathogens. Organisms that transmit diseases are called vectors. ...
Chapter 25
... which makes a DNA copy of their RNA genome • Human Immunodeficiency Virus (HIV) the cause of Acquired Immunodeficiency Syndrome (AIDS) • HIV-1 & HIV-2 • T-cell lymphotropic viruses I & II leukemia ...
... which makes a DNA copy of their RNA genome • Human Immunodeficiency Virus (HIV) the cause of Acquired Immunodeficiency Syndrome (AIDS) • HIV-1 & HIV-2 • T-cell lymphotropic viruses I & II leukemia ...
Master/PhD position in cell biology of virus infection at the University
... skin or mucosa, to reach its receptors and initiate infection. We aim to characterize physical barriers, signaling pathways and receptors that are involved in the viral entry process. The establishment of a protocol for ex vivo infection of epidermal sheets allows us to study virus entry into the ep ...
... skin or mucosa, to reach its receptors and initiate infection. We aim to characterize physical barriers, signaling pathways and receptors that are involved in the viral entry process. The establishment of a protocol for ex vivo infection of epidermal sheets allows us to study virus entry into the ep ...