幻灯片 1
... Structure of RNA (“Retro”) Viruses: and RNA Tumor Viruses Enveloped Virus with RNA Genome • Single Stranded, Diploid, Non-complementary • Positive Polarity: Acts Directly as Message • 9 kb; 3 to 4 million mw per strand • Viral envelope host-derived RNA-Directed DNA Polymerase ("Reverse transcriptas ...
... Structure of RNA (“Retro”) Viruses: and RNA Tumor Viruses Enveloped Virus with RNA Genome • Single Stranded, Diploid, Non-complementary • Positive Polarity: Acts Directly as Message • 9 kb; 3 to 4 million mw per strand • Viral envelope host-derived RNA-Directed DNA Polymerase ("Reverse transcriptas ...
File - Biology with Radjewski
... translated into new viral proteins immediately Some RNA viruses, called __________________ contain the enzyme _____________ ________________ in addition to RNA. o Reverse transcriptase uses RNA as a _____________ to make DNA, which then inserts into the host cell’s genome. o Reverse transcriptase __ ...
... translated into new viral proteins immediately Some RNA viruses, called __________________ contain the enzyme _____________ ________________ in addition to RNA. o Reverse transcriptase uses RNA as a _____________ to make DNA, which then inserts into the host cell’s genome. o Reverse transcriptase __ ...
Viruses
... • Through the 1800s, many scientists discovered that something smaller than bacteria could cause disease and they called it virion (Latin word- poison). • In the 1930s, after the invention of electron microscopes, viruses finally could be seen. • The first photographs of viruses were obtained in 194 ...
... • Through the 1800s, many scientists discovered that something smaller than bacteria could cause disease and they called it virion (Latin word- poison). • In the 1930s, after the invention of electron microscopes, viruses finally could be seen. • The first photographs of viruses were obtained in 194 ...
Prokaryotes
... or RNA and a protein coat • In some viruses, the coat is enveloped in some of an infected cell’s plasma membrane – Outer envelope forms as each new virus particle is released by budding or lysis • In bacteriophages and other complex viruses, the coat has a sheath and other ...
... or RNA and a protein coat • In some viruses, the coat is enveloped in some of an infected cell’s plasma membrane – Outer envelope forms as each new virus particle is released by budding or lysis • In bacteriophages and other complex viruses, the coat has a sheath and other ...
Virus Vs. Bacteria!
... ·Viruses are not living cells…they can’t move, eat, or reproduce by themselv ·BUT, if a virus can get inside a living cell, it can reproduce! ·SO viruses are always trying to invade living cells! ...
... ·Viruses are not living cells…they can’t move, eat, or reproduce by themselv ·BUT, if a virus can get inside a living cell, it can reproduce! ·SO viruses are always trying to invade living cells! ...
summary - BICTEL ULg
... resistance/susceptibility of animals against infectious diseases. Two genes were being intensively studied (Mx and OAS) due to their theoretical potential in interfering with the replicative cycle of several viruses responsible for bovine’s viral pneumonias (Baise et al., 2004 ; Gerardin et al., 200 ...
... resistance/susceptibility of animals against infectious diseases. Two genes were being intensively studied (Mx and OAS) due to their theoretical potential in interfering with the replicative cycle of several viruses responsible for bovine’s viral pneumonias (Baise et al., 2004 ; Gerardin et al., 200 ...
Viruses Scavenger Hunt Guiding Worksheet
... Article from: http://www.scq.ubc.ca/restriction-endonucleases-molecular-scissors-forspecifically-cutting-dna/ a) What are restriction endonucleases (restriction enzymes) and what do they do? ...
... Article from: http://www.scq.ubc.ca/restriction-endonucleases-molecular-scissors-forspecifically-cutting-dna/ a) What are restriction endonucleases (restriction enzymes) and what do they do? ...
LOct29 viruses
... • Replicative form (RF); one strand used as template for synthesis of mRNA, copies of genome ...
... • Replicative form (RF); one strand used as template for synthesis of mRNA, copies of genome ...
27. The micro-evolution of FMDV
... Our knowledge of fundamental processes underlying the population genetics of FMDV remains far from complete. Whether or not the dynamics of viral populations within individuals are governed by the principles of ‘quasi-species’ or those of more conventional ‘Darwinian’ selection depends critically on ...
... Our knowledge of fundamental processes underlying the population genetics of FMDV remains far from complete. Whether or not the dynamics of viral populations within individuals are governed by the principles of ‘quasi-species’ or those of more conventional ‘Darwinian’ selection depends critically on ...
THE GENETICS OF VIRUSES
... other locations in the genome to the gene for kernel color The control of gene expression enables the individual bacteria to adjust their metabolism to environmental change—saves energy and resources How does a bacterium locked in the genome is has inherited cope with environmental fluctuation? --Me ...
... other locations in the genome to the gene for kernel color The control of gene expression enables the individual bacteria to adjust their metabolism to environmental change—saves energy and resources How does a bacterium locked in the genome is has inherited cope with environmental fluctuation? --Me ...
Virus PowerPoint
... an outbreak of bovine spongiform encephalopathy, better known as mad cow disease, which spread to Europe and other areas. Two cows have been found with the illness in the United States. • The human form of the illness is called variant Creutzfeld-Jakob disease and is believed to have originated from ...
... an outbreak of bovine spongiform encephalopathy, better known as mad cow disease, which spread to Europe and other areas. Two cows have been found with the illness in the United States. • The human form of the illness is called variant Creutzfeld-Jakob disease and is believed to have originated from ...
Name: Date: Period: 1.22 Virus Reading Are viruses Alive? Anyone
... This is a picture of a virus using the spikes to latch onto the cell. The virus then injects its DNA into the cell like shot The virus's DNA takes control of the cell once it's within the cytoplasm and begins to make the cell produce virus DNA and other parts of viruses. The host cell is forced to u ...
... This is a picture of a virus using the spikes to latch onto the cell. The virus then injects its DNA into the cell like shot The virus's DNA takes control of the cell once it's within the cytoplasm and begins to make the cell produce virus DNA and other parts of viruses. The host cell is forced to u ...
Chapter 2A: Viruses and Bacteria
... 6. Reproduce ONLY when inside a living cell Host: living thing that provides a source of energy for a virus or organism Parasite: organism that lives in or on a host and causes harm --Almost all viruses act like parasites because they must be inside a living cell to reproduce AND because they destro ...
... 6. Reproduce ONLY when inside a living cell Host: living thing that provides a source of energy for a virus or organism Parasite: organism that lives in or on a host and causes harm --Almost all viruses act like parasites because they must be inside a living cell to reproduce AND because they destro ...
Instrumentation and Process Control
... through the phage tail into the cell. The linear DNA becomes a circle as the single-stranded regions on the 5" end and the 3' end pair their complementary bases. A ligating enzyme makes a covalent bond in each strand to close the circle. Circularization is important because it is the circular form t ...
... through the phage tail into the cell. The linear DNA becomes a circle as the single-stranded regions on the 5" end and the 3' end pair their complementary bases. A ligating enzyme makes a covalent bond in each strand to close the circle. Circularization is important because it is the circular form t ...
Viral structure
... They are formed during infection with certain viruses when the host cell DNA is fragmented and pieces of it are incorporated within the capsid protein. Pseudovirions can infect cells, but they do not replicate. ...
... They are formed during infection with certain viruses when the host cell DNA is fragmented and pieces of it are incorporated within the capsid protein. Pseudovirions can infect cells, but they do not replicate. ...
How do viruses differ?
... The Baltimore Classification of viruses is based on the method of viral mRNA synthesis The Baltimore Classification of viruses is based on the method of viral mRNA synthesis Baltimore classification Group Contains I dsDNA viruses II ssDNA viruses III dsRNA viruses IV (+)ssRNA viruses V (-)ssRNA viru ...
... The Baltimore Classification of viruses is based on the method of viral mRNA synthesis The Baltimore Classification of viruses is based on the method of viral mRNA synthesis Baltimore classification Group Contains I dsDNA viruses II ssDNA viruses III dsRNA viruses IV (+)ssRNA viruses V (-)ssRNA viru ...
Virus and Bacteria Unit Study Guide
... List the characteristics of life that viruses do and do not have. Identify common viruses. Label a bacteriophage virus. Compare the size of viruses, prokaryotic cells and eukaryotic cells. Outline the process of both the lytic and lysogenic cycle, understanding how the two are connected. Identify ex ...
... List the characteristics of life that viruses do and do not have. Identify common viruses. Label a bacteriophage virus. Compare the size of viruses, prokaryotic cells and eukaryotic cells. Outline the process of both the lytic and lysogenic cycle, understanding how the two are connected. Identify ex ...
Bacteria and Viruses
... structure. Viruses have an outer layer called a capsid that is made of protein. Inside the capsid is genetic material, which could be DNA or RNA but not both. Viruses are classified as either DNA or RNA based on the type of genetic material ...
... structure. Viruses have an outer layer called a capsid that is made of protein. Inside the capsid is genetic material, which could be DNA or RNA but not both. Viruses are classified as either DNA or RNA based on the type of genetic material ...
Section 12-1 - SchoolNotes
... Harmless R strain + killed S strain did not cause pneumonia on their own; but did when mixed together. ...
... Harmless R strain + killed S strain did not cause pneumonia on their own; but did when mixed together. ...
Virology
... dsDNA: In Nucleus: cellular DdRP II In cytoplasm: viral DdRP dsDNA with RNA intermediate: (Badnavirus, Calimovirus) RT ...
... dsDNA: In Nucleus: cellular DdRP II In cytoplasm: viral DdRP dsDNA with RNA intermediate: (Badnavirus, Calimovirus) RT ...
Proteases and Viruses
... attach to only those cells within its host range (the range of organisms and cell types it infects). In the case of naked ...
... attach to only those cells within its host range (the range of organisms and cell types it infects). In the case of naked ...
Infection cycle: DNA viruses
... • ssDNA becomes dsDNA • 5’ to 3’ synthesis; need for primer • Variety of enzymes of host or viral origin : DNA polymerase (proofreading), helicases, ss binding proteins, ligases • In nucleus except for poxviruses ...
... • ssDNA becomes dsDNA • 5’ to 3’ synthesis; need for primer • Variety of enzymes of host or viral origin : DNA polymerase (proofreading), helicases, ss binding proteins, ligases • In nucleus except for poxviruses ...
DNA virus
A DNA virus is a virus that has DNA as its genetic material and replicates using a DNA-dependent DNA polymerase. The nucleic acid is usually double-stranded DNA (dsDNA) but may also be single-stranded DNA (ssDNA). DNA viruses belong to either Group I or Group II of the Baltimore classification system for viruses. Single-stranded DNA is usually expanded to double-stranded in infected cells. Although Group VII viruses such as hepatitis B contain a DNA genome, they are not considered DNA viruses according to the Baltimore classification, but rather reverse transcribing viruses because they replicate through an RNA intermediate. Notable diseases like smallpox, herpes, and chickenpox are caused by such DNA viruses.