(1) Replication of negative ssRNA viruses
... 1-Medically important negative-strand RNA viruses 2- They are all enveloped; . 3-Their virions contain an RNA-dependent RNA polymerase (transcriptase) that synthesizes viral mRNAs using the genomic the genomic negative-strand viral negative-strand RNA as a template RNAs are not infectious, 4- Some n ...
... 1-Medically important negative-strand RNA viruses 2- They are all enveloped; . 3-Their virions contain an RNA-dependent RNA polymerase (transcriptase) that synthesizes viral mRNAs using the genomic the genomic negative-strand viral negative-strand RNA as a template RNAs are not infectious, 4- Some n ...
How do viruses, bacteria, and protists effect our lives in both positive
... Scientists take advantage of the fact that viruses are cells so they use them as messengers by and good at getting inside taking out the bad genetic material of a virus and put in information that the virus will later deliver to cells that don't work properly. The information the virus gives the cel ...
... Scientists take advantage of the fact that viruses are cells so they use them as messengers by and good at getting inside taking out the bad genetic material of a virus and put in information that the virus will later deliver to cells that don't work properly. The information the virus gives the cel ...
Screening of some K enyan Medicinal Plants for Antibacterial Activity.
... activity of methanol extracts was determined as the minimum inhibitory concentration (MIC). The plant extracts were more active against Gram-positive (G+) than Gram -negative (G-) bacteria. The positive controls were streptomycin and benzylpenicillin for G- and G+ bacteria, respectively, both had a ...
... activity of methanol extracts was determined as the minimum inhibitory concentration (MIC). The plant extracts were more active against Gram-positive (G+) than Gram -negative (G-) bacteria. The positive controls were streptomycin and benzylpenicillin for G- and G+ bacteria, respectively, both had a ...
Natural and Artificial Selection
... chosen so that it will kill the desired bacteria, but not the cells in your body. Each different type of antibiotic affects different bacteria in different ways. For example, an antibiotic might stop a bacterium's ability to turn sugar into energy, or its ability to build its cell wall. When this ha ...
... chosen so that it will kill the desired bacteria, but not the cells in your body. Each different type of antibiotic affects different bacteria in different ways. For example, an antibiotic might stop a bacterium's ability to turn sugar into energy, or its ability to build its cell wall. When this ha ...
MICROORGANISMS
... Its shape is like a shoe. It is totally covered by cilia.These cilias help it in locomotion and fetching food. Protozoas reproduce by fission (bikhandan) and sporulation (renubhaban). IT eats algae and bacteria,but higher animals eat them. Malaria parasite causes malaria. Giardia and antamoeba cause ...
... Its shape is like a shoe. It is totally covered by cilia.These cilias help it in locomotion and fetching food. Protozoas reproduce by fission (bikhandan) and sporulation (renubhaban). IT eats algae and bacteria,but higher animals eat them. Malaria parasite causes malaria. Giardia and antamoeba cause ...
Prokaryotes
... Sphere-shaped bacteria are called cocci (singular, coccus). An example of cocci is Micrococcus luteus. Cocci are single or aggregate cells in different shapes. Rod-shaped bacteria are called bacilli (singular, bacillus). An example of bacilli is Escherichia coli. Bacilli are single or aggregate ...
... Sphere-shaped bacteria are called cocci (singular, coccus). An example of cocci is Micrococcus luteus. Cocci are single or aggregate cells in different shapes. Rod-shaped bacteria are called bacilli (singular, bacillus). An example of bacilli is Escherichia coli. Bacilli are single or aggregate ...
virus
... Either single-stranded or double-stranded DNA or RNA - linear, closed circle, or able to assume either shape. Reproduce only within living cells Virion All viruses have a nucleocapsid composed of a nucleic acid surrounded by a protein capsid that may be icosahedral, helical, or complex in structure. ...
... Either single-stranded or double-stranded DNA or RNA - linear, closed circle, or able to assume either shape. Reproduce only within living cells Virion All viruses have a nucleocapsid composed of a nucleic acid surrounded by a protein capsid that may be icosahedral, helical, or complex in structure. ...
Viral Assembly Assembly of TMV (Helical Virus)
... infectious particles when bacteria grown under non--permissive conditions) mutants of T4 non (bacteriophage) to understand processes leading to complex virus formation – These can produce some proteins but not others and some completed particles showing that the processes are not intimately linked w ...
... infectious particles when bacteria grown under non--permissive conditions) mutants of T4 non (bacteriophage) to understand processes leading to complex virus formation – These can produce some proteins but not others and some completed particles showing that the processes are not intimately linked w ...
Penicillin
... • E. coli is the lab rat of the bacterial world. • E. coli is a normal resident of the large intestine in healthy people. It is a type of probiotic organism because it crowds out disease causing bacteria. E. coli also makes vitamin K which humans require to be healthy. • Although it is generally a g ...
... • E. coli is the lab rat of the bacterial world. • E. coli is a normal resident of the large intestine in healthy people. It is a type of probiotic organism because it crowds out disease causing bacteria. E. coli also makes vitamin K which humans require to be healthy. • Although it is generally a g ...
Unit 10: Classification
... 1) not considered living because _____________________________________________ 2) do not _____________________ (no cellular respiration) 3) not a ____________ 4) do not ____________ 5) do not maintain _____________________ 6) they do reproduce – but ONLY ___________________________ 7) much _________ ...
... 1) not considered living because _____________________________________________ 2) do not _____________________ (no cellular respiration) 3) not a ____________ 4) do not ____________ 5) do not maintain _____________________ 6) they do reproduce – but ONLY ___________________________ 7) much _________ ...
Chapter 17 Power Point
... In the case of the T4, molecules on its tail fibers attach to the surface of a bacterium The virus then injects its DNA into the cell In most cases, the compete virus particle itself never enters the cell ...
... In the case of the T4, molecules on its tail fibers attach to the surface of a bacterium The virus then injects its DNA into the cell In most cases, the compete virus particle itself never enters the cell ...
Cheng Zhang`s Muslim Medic Microbiology
... Virus disassembled so no infectious particles present Expression of viral proteins in highly regulated way Nucleic acid... Protein coat... Proteins for cell lysis ...
... Virus disassembled so no infectious particles present Expression of viral proteins in highly regulated way Nucleic acid... Protein coat... Proteins for cell lysis ...
Communicable Diseases and You
... • A communicable disease is one that can be passed from one individual to another. • A communicable disease is caused by an _________ so small it can only be seen by using a ___________. ...
... • A communicable disease is one that can be passed from one individual to another. • A communicable disease is caused by an _________ so small it can only be seen by using a ___________. ...
Slide 1
... • Acquired from host cell during viral replication or release; envelope is portion of membrane system of host • Composed of phospholipid bilayer and proteins; some proteins are virally-coded glycoproteins (spikes) • Envelope’s proteins and glycoproteins often play role in host recognition ...
... • Acquired from host cell during viral replication or release; envelope is portion of membrane system of host • Composed of phospholipid bilayer and proteins; some proteins are virally-coded glycoproteins (spikes) • Envelope’s proteins and glycoproteins often play role in host recognition ...
Bacterial colony growth
... two touching/colliding bacteria. The bacterial growth is well characterized, and can be modeled to follow actual experimental observations, which we obtain from the Tans lab (TU Delft / AMOLF). The most basic interaction between two bacteria is repulsive - touching bacteria that grow will repel each ...
... two touching/colliding bacteria. The bacterial growth is well characterized, and can be modeled to follow actual experimental observations, which we obtain from the Tans lab (TU Delft / AMOLF). The most basic interaction between two bacteria is repulsive - touching bacteria that grow will repel each ...
HIV Infection Worksheet
... In general, viruses have very small genomes which 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 are parasitic, they bring very little with them ...
... In general, viruses have very small genomes which 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 are parasitic, they bring very little with them ...
tus Scrupps RrsnaRcu Ixsrrrurn - The Scripps Research Institute
... assumedthat the structuremust be modified during viral infection. In fact, the movement protein of the tobaccomosaicvirus is known to modi$ the function of plasmodesmata. In this study, Beachy'sresearchteamintroduceda mutantor dysfunctional TMV movement protein *- createdby deletingthreeaminoacids-- ...
... assumedthat the structuremust be modified during viral infection. In fact, the movement protein of the tobaccomosaicvirus is known to modi$ the function of plasmodesmata. In this study, Beachy'sresearchteamintroduceda mutantor dysfunctional TMV movement protein *- createdby deletingthreeaminoacids-- ...
lecture notes
... Replication – some viruses replicate in the cytoplasm and others replicate in the nucleus. They use the ...
... Replication – some viruses replicate in the cytoplasm and others replicate in the nucleus. They use the ...
Succeeding in the pathogenic lifestyle
... phage carried by bacterium. Medically important. Every bacterium may carry a phage. • Corynebacterium diptheriae - Gm + rod; diptheria toxin = phage-encoded • Clostridium botulinum - Gm + rod; botulism toxin = phage-encoded ...
... phage carried by bacterium. Medically important. Every bacterium may carry a phage. • Corynebacterium diptheriae - Gm + rod; diptheria toxin = phage-encoded • Clostridium botulinum - Gm + rod; botulism toxin = phage-encoded ...
Bacteria - Part One
... Chapter #20 : Bacteria and Viruses I. Bacteria A. Classifying Prokaryotes Prokaryote – a single-celled organism that lacks a nucleus/major organelles. -All prokaryotes used to belong to the Kingdom Monera. -They’re now divided into 2 groups : 1. Kingdom Eubacteria – larger group that is found almost ...
... Chapter #20 : Bacteria and Viruses I. Bacteria A. Classifying Prokaryotes Prokaryote – a single-celled organism that lacks a nucleus/major organelles. -All prokaryotes used to belong to the Kingdom Monera. -They’re now divided into 2 groups : 1. Kingdom Eubacteria – larger group that is found almost ...
Bacteria And Viruses - American Training School
... 3. Viruses do not have organelles or ribosomes. Certain viruses are futher enclosed by an external lipid bilayer membrane that surrounds the capsid and may contain glycoproteins. Some viruses also carry some structural proteins and enzymes inside their capsid. 4. The genetic material is either Dna o ...
... 3. Viruses do not have organelles or ribosomes. Certain viruses are futher enclosed by an external lipid bilayer membrane that surrounds the capsid and may contain glycoproteins. Some viruses also carry some structural proteins and enzymes inside their capsid. 4. The genetic material is either Dna o ...
Small Things Considered
... to a seemingly bizarre question: can a bacterium have a “mouth?” Many bacteria consume long polymers, such as cellulose or chitin. One strategy used by gliding bacteria of the Cytophaga/ Flavobacteria group is to attach themselves to these polymers and secrete enzymes that release monomers or smal ...
... to a seemingly bizarre question: can a bacterium have a “mouth?” Many bacteria consume long polymers, such as cellulose or chitin. One strategy used by gliding bacteria of the Cytophaga/ Flavobacteria group is to attach themselves to these polymers and secrete enzymes that release monomers or smal ...
Recombination
... Genes that control galactose utilization and Genes that control biotin synthesis ...
... Genes that control galactose utilization and Genes that control biotin synthesis ...
Bacteriophage
A bacteriophage /ˈbækˈtɪər.i.oʊˌfeɪdʒ/ (informally, phage /ˈfeɪdʒ/) is a virus that infects and replicates within a bacterium. The term is derived from ""bacteria"" and the Greek: φαγεῖν (phagein), ""to devour"". Bacteriophages are composed of proteins that encapsulate a DNA or RNA genome, and may have relatively simple or elaborate structures. Their genomes may encode as few as four genes, and as many as hundreds of genes. Phages replicate within the bacterium following the injection of their genome into its cytoplasm. Bacteriophages are among the most common and diverse entities in the biosphere.Phages are widely distributed in locations populated by bacterial hosts, such as soil or the intestines of animals. One of the densest natural sources for phages and other viruses is sea water, where up to 9×108 virions per milliliter have been found in microbial mats at the surface, and up to 70% of marine bacteria may be infected by phages.They have been used for over 90 years as an alternative to antibiotics in the former Soviet Union and Central Europe, as well as in France. They are seen as a possible therapy against multi-drug-resistant strains of many bacteria (see phage therapy).