resume_nante
... Morocco. The water samples were concentrated by glass wool method then analyzed for human infectious enterovirus by integrated cell culture-PCR (ICC/RT-PCR) and by qRT-PCR for other enteric viruses. Results: Human adenovirus, polyomavirus JC, Norovirus GII and rotavirus A were detected in 63, 57, 43 ...
... Morocco. The water samples were concentrated by glass wool method then analyzed for human infectious enterovirus by integrated cell culture-PCR (ICC/RT-PCR) and by qRT-PCR for other enteric viruses. Results: Human adenovirus, polyomavirus JC, Norovirus GII and rotavirus A were detected in 63, 57, 43 ...
HOW HIV INFECTS CELLS
... In general, viruses have very small genomes. This means they can encode a very limited number of their own proteins. For this reason, most viruses must use the proteins provided by their host in order to reproduce (make more viruses). In a way, viruses act like parasites. They bring very little with ...
... In general, viruses have very small genomes. This means they can encode a very limited number of their own proteins. For this reason, most viruses must use the proteins provided by their host in order to reproduce (make more viruses). In a way, viruses act like parasites. They bring very little with ...
DNA
... • They experimented with bacteriophages, viruses that infect bacterial cells. • These viruses are basically composed of protein surrounding DNA. ...
... • They experimented with bacteriophages, viruses that infect bacterial cells. • These viruses are basically composed of protein surrounding DNA. ...
Isolation of Emerging Viruses
... respiratory and encephalitic illness in abbatoir workers in Singapore, but only in those who handled pigs from outbreak regions in Malaysia ...
... respiratory and encephalitic illness in abbatoir workers in Singapore, but only in those who handled pigs from outbreak regions in Malaysia ...
DNA Lecture #1: DNA Structure and Proof That DNA Controls Traits
... added to a non-lethal strain. The non-lethal strain was transformed into a lethal one. 1944: Avery: DNA is the molecule involved. DNA stores and transmits genetic information from one generation to the next ...
... added to a non-lethal strain. The non-lethal strain was transformed into a lethal one. 1944: Avery: DNA is the molecule involved. DNA stores and transmits genetic information from one generation to the next ...
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
... – ssRNA genomes ready for immediate translation are positive-sense RNA – ssRNA genomes that must be converted into proper form are negative-sense RNA ...
... – ssRNA genomes ready for immediate translation are positive-sense RNA – ssRNA genomes that must be converted into proper form are negative-sense RNA ...
Virus-Linked Cancers
... that the abnormal cells were caused by a Human papillomavirus (HPV) infection. Maria had the precancerous cells removed with cryosurgery, a procedure that uses the extreme cold produced by liquid nitrogen or argon gas to destroy the abnormal tissue. ...
... that the abnormal cells were caused by a Human papillomavirus (HPV) infection. Maria had the precancerous cells removed with cryosurgery, a procedure that uses the extreme cold produced by liquid nitrogen or argon gas to destroy the abnormal tissue. ...
1. dia - Figshare
... role in the speciation and evolution of many strains. It also has particular significance for the risk assessment of plants that have been genetically modified for disease resistance by incorporating viral sequences into plant genomes. In the world of RNA viruses the source of recombination during r ...
... role in the speciation and evolution of many strains. It also has particular significance for the risk assessment of plants that have been genetically modified for disease resistance by incorporating viral sequences into plant genomes. In the world of RNA viruses the source of recombination during r ...
Viruses & Bacteria
... 1. In some with single-stranded RNA (class IV), the genome acts as mRNA and is translated directly. 2. In others (class V), the RNA genome serves as a template for mRNA and for a complementary RNA. -This complementary strand is the template for the synthesis of additional copies of genome RNA. ...
... 1. In some with single-stranded RNA (class IV), the genome acts as mRNA and is translated directly. 2. In others (class V), the RNA genome serves as a template for mRNA and for a complementary RNA. -This complementary strand is the template for the synthesis of additional copies of genome RNA. ...
Activity 3.1
... There are a lot of sources on DNA to find on the internet. An important source for information is a guide developed by the European Initiative for Biotechnology Education. Your teacher can give you (part of) the guide that this organization has developed. You can also download it yourself at http:// ...
... There are a lot of sources on DNA to find on the internet. An important source for information is a guide developed by the European Initiative for Biotechnology Education. Your teacher can give you (part of) the guide that this organization has developed. You can also download it yourself at http:// ...
CHAPTER 8
... The family Circoviridae includes viruses with circular single-stranded DNA genomes, and which share common physicochemical and genomic properties. ...
... The family Circoviridae includes viruses with circular single-stranded DNA genomes, and which share common physicochemical and genomic properties. ...
4. Virus Reproduction: Basic reproduction
... 4. Virus Reproduction: Basic reproduction (virus without envelope), The Lytic Cycle (for bacteriophages) & The Lysogenic Cycle 4a. Virus Reproduction: BASIC REPRODUCTION The diagram on the left shows the simplest viral reproductive cycle of a virus. This occurs in viruses that do not have an envelop ...
... 4. Virus Reproduction: Basic reproduction (virus without envelope), The Lytic Cycle (for bacteriophages) & The Lysogenic Cycle 4a. Virus Reproduction: BASIC REPRODUCTION The diagram on the left shows the simplest viral reproductive cycle of a virus. This occurs in viruses that do not have an envelop ...
Document
... host range •Viruses only infect in their ___________________. •Viruses that infect bacteria are called capsid DNA ____________________. bacteriophage or phage •All viruses act by forcing the host cell to manufacture 100’s or 1000’s of copies of itself. While this is going on, the host cell can’t mak ...
... host range •Viruses only infect in their ___________________. •Viruses that infect bacteria are called capsid DNA ____________________. bacteriophage or phage •All viruses act by forcing the host cell to manufacture 100’s or 1000’s of copies of itself. While this is going on, the host cell can’t mak ...
viruses
... Which of the following statements about viruses is true? a. Viruses appear similar to bacteria when studied with a light microscope. b. Viruses display the essential characteristics of living things. c. Viruses can reproduce independently if they contain DNA. d. Viruses cannot reproduce unless they ...
... Which of the following statements about viruses is true? a. Viruses appear similar to bacteria when studied with a light microscope. b. Viruses display the essential characteristics of living things. c. Viruses can reproduce independently if they contain DNA. d. Viruses cannot reproduce unless they ...
Chapter 10 DNA Replication and Expression
... • Viruses invade host cells by injecting their DNA • Viral DNA incorporates into the host cell’s genome ( Lysogenic Phase) • Viruses use their DNA to force host cells to produce more viruses ( Lytic Phase) • Viruses do not fit into the cell theory. ...
... • Viruses invade host cells by injecting their DNA • Viral DNA incorporates into the host cell’s genome ( Lysogenic Phase) • Viruses use their DNA to force host cells to produce more viruses ( Lytic Phase) • Viruses do not fit into the cell theory. ...
Unit 7a * Structure of DNA
... • Griffith experimented with the bacteria that cause pneumonia. • He used two forms: the S form (deadly) and the R form (not deadly). • A transforming material passed from dead S bacteria to live R bacteria, making them deadly. • His results? Genetic material can transfer to other organisms ...
... • Griffith experimented with the bacteria that cause pneumonia. • He used two forms: the S form (deadly) and the R form (not deadly). • A transforming material passed from dead S bacteria to live R bacteria, making them deadly. • His results? Genetic material can transfer to other organisms ...
Microbiology 2 - Viral disease
... 50% are 15–24 year olds 8,200 AIDS-related deaths each day; 6 deaths per minute Aids is a retrovirus, of subgroup lentivirus: ssRNA +ve, diploid. It is more complex than other retroviruses as it has extra regulatory genes. Transmission: sexual, intravenous drug abuse, mother to baby, conta ...
... 50% are 15–24 year olds 8,200 AIDS-related deaths each day; 6 deaths per minute Aids is a retrovirus, of subgroup lentivirus: ssRNA +ve, diploid. It is more complex than other retroviruses as it has extra regulatory genes. Transmission: sexual, intravenous drug abuse, mother to baby, conta ...
virus
... • The broadest variety of RNA genomes is found in viruses that infect animals • RNA viruses lack replication error-checking mechanisms, thus have higher rates of mutation. • Related viruses can combine/recombine information if they infect the same host cell. (flu) • Retroviruses use reverse transcri ...
... • The broadest variety of RNA genomes is found in viruses that infect animals • RNA viruses lack replication error-checking mechanisms, thus have higher rates of mutation. • Related viruses can combine/recombine information if they infect the same host cell. (flu) • Retroviruses use reverse transcri ...
lytic cycle - Cloudfront.net
... FROM THE SURROUNDING ENVIRONMENT, THE BACTERIUM NO LONGER NEEDS TO MAKE ITS OWN TRYPTOPHAN. IN THIS CASE, RISING LEVELS OF TRPTOPHAN INDUCE SOME TRYPTOPHAN TO REACT WITH THE INACTIVE REPRESSOR AND MAKE IT ACTIVE. HERE TRPTOPHAN IS ACTING AS A COREPRESSOR. THE ACTIVE REPRESSOR NOW BINDS TO THE OPERAT ...
... FROM THE SURROUNDING ENVIRONMENT, THE BACTERIUM NO LONGER NEEDS TO MAKE ITS OWN TRYPTOPHAN. IN THIS CASE, RISING LEVELS OF TRPTOPHAN INDUCE SOME TRYPTOPHAN TO REACT WITH THE INACTIVE REPRESSOR AND MAKE IT ACTIVE. HERE TRPTOPHAN IS ACTING AS A COREPRESSOR. THE ACTIVE REPRESSOR NOW BINDS TO THE OPERAT ...
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.