Types of Pathogens Topic of Class 12 Biology

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• Types of Pathogens Topic of Class 12 Biology

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Types of Pathogens Topic of Class 12 Biology

• In this article, we have discussed  Types of
  Pathogens, We have already discussed  what is
  Pathogens, Pathogen and diseases  in last post.
• Types of pathogens There are several types of
  pathogens affecting both animals including human
  beings and plants.
• Bacterial
• The vast majority of bacteria, which typically
  range between 1 and 5 micrometres in length, are
  harmless or beneficial to humans. However, a
  relatively small list of pathogenic bacteria can
  cause infectious diseases. One of the bacterial
  diseases with the highest disease burden is
  tuberculosis, caused by the bacterium Mycobacteriu
  m tuberculosis, which kills about 2 million
  people a year, mostly in sub-Saharan Africa.
  Pathogenic bacteria contribute to other globally
  significant diseases, such as pneumonia, which
  can be caused by bacteria such as Streptococcus an
  d Pseudomonas, and foodborne illnesses, which can
  be caused by bacteria such as Shigella, Campylobac
  ter, and Salmonella. Pathogenic bacteria also
  cause infections such as tetanus, typhoid fever,
  diphtheria, syphilis, and leprosy.

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Types of Pathogens Topic of Class 12 Biology

• Bacteria can often be killed by antibiotics,
  which are usually designed to destroy the cell
  wall. This expels the pathogens DNA, making it
  incapable of producing proteins and causing the
  bacteria to die. A class of bacteria without cell
  walls is mycoplasma (a cause of lung infections).
  A class of bacteria which must live within other
  cells (obligate intracellular parasitic)
  is chlamydia (genus), the world leader in
  causing sexually transmitted infection (STI).
• Watch videos on the  same for better
  understanding and learning, Biology Class 12
• Viral
• Some of the diseases that are caused by viral
  pathogens include smallpox, influenza, mumps,
  measles, chickenpox, ebola, and rubella.
• Pathogenic viruses are diseases mainly of the
  families of Adenoviridae, Picornaviridae, Herpesvi
  ridae, Hepadnaviridae, Flaviviridae,
  Retroviridae, Orthomyxoviridae, Paramyxoviridae,
  Papovaviridae, Polyomavirus, Rhabdoviridae,
  Togaviridae. Viruses typically range between 20
  and 300 nanometers in length.

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Types of Pathogens Topic of Class 12 Biology

• A study in detail about Viral with animated
  videos, Biology notes Class 12.
• Fungal
• Fungi comprise a eukaryotic kingdom of microbes
  that are usually saprophytes (consume dead
  organisms) but can cause diseases in humans,
  animals, and plants. Fungi are the most common
  cause of diseases in crops and other plants. The
  typical fungal spore size is 1-40 micrometers in
  length.
• Prionic
• According to the prion theory, prions are
  infectious pathogens that do not contain nucleic
  acids. These abnormally folded proteins are found
  characteristically in some diseases such as
  scrapie, bovine spongiform encephalopathy (mad
  cow disease) and CreutzfeldtJakob disease.
• Other parasites
• Some eukaryotic organisms, such as protists and
  helminths, cause diseases in humans.

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Types of Pathogens Topic of Class 12 Biology

• Algal
• Examples of algae acting as a mammalian pathogen
  are known as well, notably the disease
  protothecosis. Protothecosis is a disease found
  in dogs, cats, cattle, and humans caused by a
  type of green alga known as prototheca that lacks
  chlorophyll.
• You can read more topics of Biology Class 12
• Ecological Succession
• Ecosystem
• For more class 12 online Biology notes of Class
  12, NCERT solutions, CBSE guide, Exam pattern for
  board exams, log in with Takshila Learning.
• Tags Pathogens, Types of Pathogens, Algal, Prioni
  c, Viral, fungal, Bacteria.
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