The first discovery of a virus is credited to Dmitri Ivanovsky, a Russian biologist. In 1892, Ivanovsky was investigating a disease affecting tobacco plants known as tobacco mosaic disease. He found that the infectious agent causing the disease could pass through filters that trapped bacteria. ThisRead more
The first discovery of a virus is credited to Dmitri Ivanovsky, a Russian biologist. In 1892, Ivanovsky was investigating a disease affecting tobacco plants known as tobacco mosaic disease. He found that the infectious agent causing the disease could pass through filters that trapped bacteria. This observation led him to conclude that the infectious agent was smaller than bacteria and could not be seen under a light microscope. His work laid the foundation for the concept of a virus, which was later expanded upon by other scientists. While Ivanovsky did not use the term “virus,” his discovery was a significant milestone in the field of microbiology and virology, paving the way for future research into viral diseases and their impact on plants, animals, and humans.
Viruses are considered to be a transitional group between living and non-living. They exhibit characteristics of life, such as replication and evolution, only when they infect a host cell. Outside of a host, they exist as inert particles consisting of genetic material (DNA or RNA) enclosed in a protRead more
Viruses are considered to be a transitional group between living and non-living. They exhibit characteristics of life, such as replication and evolution, only when they infect a host cell. Outside of a host, they exist as inert particles consisting of genetic material (DNA or RNA) enclosed in a protein coat. They cannot carry out metabolic processes on their own and do not have cellular structures. When a virus infects a host cell, it takes over the cell’s machinery to replicate itself, which is a key aspect of living organisms. However, outside of a host, they do not show any of these properties and remain dormant. This dual nature places them in a unique position on the boundary between living and non-living matter.
Viruses do not contain enzymes. Unlike algae, lichen, and bacteria, which are living organisms with cellular structures and metabolic processes that involve enzymes, viruses are much simpler entities. They consist mainly of genetic material (either DNA or RNA) surrounded by a protein coat. Viruses lRead more
Viruses do not contain enzymes. Unlike algae, lichen, and bacteria, which are living organisms with cellular structures and metabolic processes that involve enzymes, viruses are much simpler entities. They consist mainly of genetic material (either DNA or RNA) surrounded by a protein coat. Viruses lack the cellular machinery necessary to produce enzymes or carry out metabolic activities on their own. Instead, they rely entirely on the host cell’s machinery to replicate and produce the proteins and enzymes they need for their life cycle. This lack of enzymes is one of the reasons viruses are considered to be on the boundary between living and non-living.
TMV is related to viruses and their reproduction. TMV stands for Tobacco Mosaic Virus, which infects plants such as tobacco and other crops. It was the first virus to be discovered and played a key role in the study of virology. TMV replicates within plant cells by taking over the host's cellular maRead more
TMV is related to viruses and their reproduction. TMV stands for Tobacco Mosaic Virus, which infects plants such as tobacco and other crops. It was the first virus to be discovered and played a key role in the study of virology. TMV replicates within plant cells by taking over the host’s cellular machinery to produce new virus particles. This process of reproduction is specific to viruses, as they require a host organism to multiply. The study of TMV has provided valuable insights into the replication and transmission of viruses, as well as their impact on host organisms.
Hydrophobia, also known as rabies, is caused by viruses. Specifically, the rabies virus is responsible for this condition. Rabies is a serious viral infection that affects the nervous system, leading to symptoms such as anxiety, confusion, hallucinations, and a fear of water, which is why the conditRead more
Hydrophobia, also known as rabies, is caused by viruses. Specifically, the rabies virus is responsible for this condition. Rabies is a serious viral infection that affects the nervous system, leading to symptoms such as anxiety, confusion, hallucinations, and a fear of water, which is why the condition is referred to as hydrophobia. The rabies virus is typically transmitted through the saliva of infected animals, often through bites or scratches. Once the virus enters the body, it travels to the brain, causing severe neurological symptoms and, if left untreated, is almost always fatal. Vaccination and prompt treatment after exposure are crucial in preventing the progression of the disease.
Who discovered the virus first?
The first discovery of a virus is credited to Dmitri Ivanovsky, a Russian biologist. In 1892, Ivanovsky was investigating a disease affecting tobacco plants known as tobacco mosaic disease. He found that the infectious agent causing the disease could pass through filters that trapped bacteria. ThisRead more
The first discovery of a virus is credited to Dmitri Ivanovsky, a Russian biologist. In 1892, Ivanovsky was investigating a disease affecting tobacco plants known as tobacco mosaic disease. He found that the infectious agent causing the disease could pass through filters that trapped bacteria. This observation led him to conclude that the infectious agent was smaller than bacteria and could not be seen under a light microscope. His work laid the foundation for the concept of a virus, which was later expanded upon by other scientists. While Ivanovsky did not use the term “virus,” his discovery was a significant milestone in the field of microbiology and virology, paving the way for future research into viral diseases and their impact on plants, animals, and humans.
See lessViruses are considered to be
Viruses are considered to be a transitional group between living and non-living. They exhibit characteristics of life, such as replication and evolution, only when they infect a host cell. Outside of a host, they exist as inert particles consisting of genetic material (DNA or RNA) enclosed in a protRead more
Viruses are considered to be a transitional group between living and non-living. They exhibit characteristics of life, such as replication and evolution, only when they infect a host cell. Outside of a host, they exist as inert particles consisting of genetic material (DNA or RNA) enclosed in a protein coat. They cannot carry out metabolic processes on their own and do not have cellular structures. When a virus infects a host cell, it takes over the cell’s machinery to replicate itself, which is a key aspect of living organisms. However, outside of a host, they do not show any of these properties and remain dormant. This dual nature places them in a unique position on the boundary between living and non-living matter.
See lessWhich of the following does not contain enzymes?
Viruses do not contain enzymes. Unlike algae, lichen, and bacteria, which are living organisms with cellular structures and metabolic processes that involve enzymes, viruses are much simpler entities. They consist mainly of genetic material (either DNA or RNA) surrounded by a protein coat. Viruses lRead more
Viruses do not contain enzymes. Unlike algae, lichen, and bacteria, which are living organisms with cellular structures and metabolic processes that involve enzymes, viruses are much simpler entities. They consist mainly of genetic material (either DNA or RNA) surrounded by a protein coat. Viruses lack the cellular machinery necessary to produce enzymes or carry out metabolic activities on their own. Instead, they rely entirely on the host cell’s machinery to replicate and produce the proteins and enzymes they need for their life cycle. This lack of enzymes is one of the reasons viruses are considered to be on the boundary between living and non-living.
See lessThe word T.M.V. is related to
TMV is related to viruses and their reproduction. TMV stands for Tobacco Mosaic Virus, which infects plants such as tobacco and other crops. It was the first virus to be discovered and played a key role in the study of virology. TMV replicates within plant cells by taking over the host's cellular maRead more
TMV is related to viruses and their reproduction. TMV stands for Tobacco Mosaic Virus, which infects plants such as tobacco and other crops. It was the first virus to be discovered and played a key role in the study of virology. TMV replicates within plant cells by taking over the host’s cellular machinery to produce new virus particles. This process of reproduction is specific to viruses, as they require a host organism to multiply. The study of TMV has provided valuable insights into the replication and transmission of viruses, as well as their impact on host organisms.
See lessHydrophobia is caused by
Hydrophobia, also known as rabies, is caused by viruses. Specifically, the rabies virus is responsible for this condition. Rabies is a serious viral infection that affects the nervous system, leading to symptoms such as anxiety, confusion, hallucinations, and a fear of water, which is why the conditRead more
Hydrophobia, also known as rabies, is caused by viruses. Specifically, the rabies virus is responsible for this condition. Rabies is a serious viral infection that affects the nervous system, leading to symptoms such as anxiety, confusion, hallucinations, and a fear of water, which is why the condition is referred to as hydrophobia. The rabies virus is typically transmitted through the saliva of infected animals, often through bites or scratches. Once the virus enters the body, it travels to the brain, causing severe neurological symptoms and, if left untreated, is almost always fatal. Vaccination and prompt treatment after exposure are crucial in preventing the progression of the disease.
See less