DNA-notes
... rhamnose associated with the cell wall. Nonliving particles, smaller than a cell, usually consisting of a strand of DNA and an associated protein coating. It looks a lot like the original lunar lander. A type of virus that infects and kills bacteria. "Phage" means "eat" (phagocytosis). Like other vi ...
... rhamnose associated with the cell wall. Nonliving particles, smaller than a cell, usually consisting of a strand of DNA and an associated protein coating. It looks a lot like the original lunar lander. A type of virus that infects and kills bacteria. "Phage" means "eat" (phagocytosis). Like other vi ...
Lets`s Get Small
... glass. Compare its thickness, or width, to your own hair. If you were going to make a model of a piece of human hair, would you make it larger or smaller than a real piece of hair? Do you think microbes are smaller than the width of a piece of hair? If you needed to make a model of a microbe, would ...
... glass. Compare its thickness, or width, to your own hair. If you were going to make a model of a piece of human hair, would you make it larger or smaller than a real piece of hair? Do you think microbes are smaller than the width of a piece of hair? If you needed to make a model of a microbe, would ...
Peach Stunt Disease and Associated Diseases of Peach
... that natural spread within peach orchards via insects during pollination is an important means of transmission. Additionally, it has been demonstrated that natural spread of both PNRSV and PDV during pollination occurs more rapidly among trees of the same cultivar. PNRSV is more readily transmitted ...
... that natural spread within peach orchards via insects during pollination is an important means of transmission. Additionally, it has been demonstrated that natural spread of both PNRSV and PDV during pollination occurs more rapidly among trees of the same cultivar. PNRSV is more readily transmitted ...
Negative sense RNA viruses
... - prevention by animal immunization; rarely used for humans - treatment shortly after transmission required; natural mortality in untreated humans is 15-25% - particularly unpleasant death makes this one of the most feared viruses Genus Ephemerovirus - Bovine ephemeral virus is most important - low ...
... - prevention by animal immunization; rarely used for humans - treatment shortly after transmission required; natural mortality in untreated humans is 15-25% - particularly unpleasant death makes this one of the most feared viruses Genus Ephemerovirus - Bovine ephemeral virus is most important - low ...
Ch 18 Lecture
... d. Because cowpox is so similar to smallpox, an exposure to cowpox causes the immune system to react vigorously against smallpox. e. Vaccines can prevent disease, but they cannot treat or cure disease. f. Antibiotics only work against bacteria. They work by inhibiting bacterial enzymes. Viruses hav ...
... d. Because cowpox is so similar to smallpox, an exposure to cowpox causes the immune system to react vigorously against smallpox. e. Vaccines can prevent disease, but they cannot treat or cure disease. f. Antibiotics only work against bacteria. They work by inhibiting bacterial enzymes. Viruses hav ...
Bacteria, Protist, Fungi, and Viruses Lesson Overview In this lesson
... Virtual Library Lesson: Bacteria, Protists, Fungi, Viruses and Diseases ...
... Virtual Library Lesson: Bacteria, Protists, Fungi, Viruses and Diseases ...
1 Pathogens and the Immune System “The War Begins” The Enemy
... destroys the pathogen 2) the pathogen survives and destroys the host Sometimes: 3) certain viruses go dormant and stay inside the host forever ( ...
... destroys the pathogen 2) the pathogen survives and destroys the host Sometimes: 3) certain viruses go dormant and stay inside the host forever ( ...
Microbiology
... unable to grow in the presence of oxygen, it normally causes very few problems 4. If it finds its way into a place free of air and filled with food material, they grow very quickly ...
... unable to grow in the presence of oxygen, it normally causes very few problems 4. If it finds its way into a place free of air and filled with food material, they grow very quickly ...
Human Corona Virus
... originated in Saudi Arabia in April of 2012, is now linked to deaths throughout the Middle East and in several European nations. The virus is part of a family of coronaviruses that cause illnesses ranging from a cold to Sever Acute Respiratory Syndrome (SARS), and has been re-named Middle East respi ...
... originated in Saudi Arabia in April of 2012, is now linked to deaths throughout the Middle East and in several European nations. The virus is part of a family of coronaviruses that cause illnesses ranging from a cold to Sever Acute Respiratory Syndrome (SARS), and has been re-named Middle East respi ...
The RNA Viruses of Medical Importance
... first emerged in early 1980s HIV1 & HIV2 are not closely related HIV1 may have originated from a chimpanzee virus 1959 first documented case of AIDS HIV is found in blood, semen, & vaginal secretions. HIV is transmitted by sex, sharing needles, and mother to child. HIV does not survive lon ...
... first emerged in early 1980s HIV1 & HIV2 are not closely related HIV1 may have originated from a chimpanzee virus 1959 first documented case of AIDS HIV is found in blood, semen, & vaginal secretions. HIV is transmitted by sex, sharing needles, and mother to child. HIV does not survive lon ...
Case Study- HIV (Answers)
... the world there, is a greater chance of becoming infected with a specific virus as compared with other parts of the world. Canadian Blood Services screens its donors, since people may be unaware that they are carriers of the virus. HIV cannot be transmitted through food or beverages. Viruses need to ...
... the world there, is a greater chance of becoming infected with a specific virus as compared with other parts of the world. Canadian Blood Services screens its donors, since people may be unaware that they are carriers of the virus. HIV cannot be transmitted through food or beverages. Viruses need to ...
Suggested Answers for Insight Questions, Foundations in
... suggestions, and points of view that will be helpful in understanding some of the concepts covered in the Insight and the chapter. Furthermore, they are not the final word--you may have thought of some other explanations that are just as valid. It is hoped they will serve to stimulate class discussi ...
... suggestions, and points of view that will be helpful in understanding some of the concepts covered in the Insight and the chapter. Furthermore, they are not the final word--you may have thought of some other explanations that are just as valid. It is hoped they will serve to stimulate class discussi ...
Characteristics of Viruses-Parts 1_2_3
... If you ever had a cold or the flu, you probably hosted viruses. A virus is an infectious agent made up of a core of nucleic acid and a protein coat. Viruses are not cells. Unlike plant and animal cells, a virus package does not have a nucleus, a membrane, or cellular organelles such as ribosomes, mi ...
... If you ever had a cold or the flu, you probably hosted viruses. A virus is an infectious agent made up of a core of nucleic acid and a protein coat. Viruses are not cells. Unlike plant and animal cells, a virus package does not have a nucleus, a membrane, or cellular organelles such as ribosomes, mi ...
MICR 201 Microbiology for Health Related Sciences
... spikes used for attachment to host cells Neuraminidase (N) spikes used to release virus from cell ...
... spikes used for attachment to host cells Neuraminidase (N) spikes used to release virus from cell ...
MICR 201 Microbiology for Health Related Sciences
... spikes used for attachment to host cells Neuraminidase (N) spikes used to release virus from cell ...
... spikes used for attachment to host cells Neuraminidase (N) spikes used to release virus from cell ...
taxonomy of plant pathogenic fungi: can we merge the past
... trade, and in guaranteeing free market access. Various studies support the estimate that there could be at least 1.5 M fungal species on earth. Of the currently known 100 000 species, only around 16% have to date been deposited in genetic resource centres; approximately 11.5% of these species are kn ...
... trade, and in guaranteeing free market access. Various studies support the estimate that there could be at least 1.5 M fungal species on earth. Of the currently known 100 000 species, only around 16% have to date been deposited in genetic resource centres; approximately 11.5% of these species are kn ...
presentation source
... protein, DNA, RNA and ATP. • Nitrogen fixation - occurs in some bacteria that are able to get nitrogen from the air (N2) and convert it to NH3 or NO2, NO3 ...
... protein, DNA, RNA and ATP. • Nitrogen fixation - occurs in some bacteria that are able to get nitrogen from the air (N2) and convert it to NH3 or NO2, NO3 ...
Viral Structure Virion, protein capsid, some have lipid envelope
... Structural Characteristics of Viruses Genome • DNA or RNA • Single Stranded or Double Stranded • Positive sense or negative sense • Segmented or non‐segmented Protein components • Attachment proteins on virion surface recognize receptors on host cells • Matrix protein: links the nucleocapsid wit ...
... Structural Characteristics of Viruses Genome • DNA or RNA • Single Stranded or Double Stranded • Positive sense or negative sense • Segmented or non‐segmented Protein components • Attachment proteins on virion surface recognize receptors on host cells • Matrix protein: links the nucleocapsid wit ...
Viruses - HCC Learning Web
... • This strain probably originated in birds and then passed between different species, undergoing mutations. • In animals infected with multiple strains of flu virus, the different strains underwent genetic recombination, leading to the emergence of a virus capable of infecting human cells. • Humans ...
... • This strain probably originated in birds and then passed between different species, undergoing mutations. • In animals infected with multiple strains of flu virus, the different strains underwent genetic recombination, leading to the emergence of a virus capable of infecting human cells. • Humans ...
Viruses and Virus Genetics
... takes about 10 days. Chicken pox has few lasting effects. However, if activated in the nerve cells, it causes shingles, rumored to be excruciatingly painful. • Polio viruses invade nerve cells that can not be repaired or replaced, so the damage caused prior to our immune system's means of destroying ...
... takes about 10 days. Chicken pox has few lasting effects. However, if activated in the nerve cells, it causes shingles, rumored to be excruciatingly painful. • Polio viruses invade nerve cells that can not be repaired or replaced, so the damage caused prior to our immune system's means of destroying ...
Medical Virology - Med Study Group
... • Viruses are obligate intracellular parasites • Viruses cannot make energy or proteins independent of a host cell • Viral genome are RNA or DNA but not both. • Viruses have a naked capsid or envelope with attached proteins • Viruses do not have the genetic capability to multiply by division. • Viru ...
... • Viruses are obligate intracellular parasites • Viruses cannot make energy or proteins independent of a host cell • Viral genome are RNA or DNA but not both. • Viruses have a naked capsid or envelope with attached proteins • Viruses do not have the genetic capability to multiply by division. • Viru ...
How bacteria cause disease
... • Bacteria can be toxigenic (produce toxins) – Bacteria may not spread, but release soluble toxins which dissolve in body fluids, damaging cells. – Gram negative contain endotoxin (LPS) ...
... • Bacteria can be toxigenic (produce toxins) – Bacteria may not spread, but release soluble toxins which dissolve in body fluids, damaging cells. – Gram negative contain endotoxin (LPS) ...
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 ...
C. Fungi - Effingham County Schools
... 12. A - Cell membrane – Controls what enters and leaves the cell. B – Cell wall – Gives shape to the cell C – Pilus – Play a role during conjugation or help attach to host cells D. – Flagellum – Helps with movement E – DNA – Contains genetic material of bacterium cell ...
... 12. A - Cell membrane – Controls what enters and leaves the cell. B – Cell wall – Gives shape to the cell C – Pilus – Play a role during conjugation or help attach to host cells D. – Flagellum – Helps with movement E – DNA – Contains genetic material of bacterium cell ...
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.