INFECTION AND RESPONSE - TOPIC 3

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14 Terms

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Pathogens

Microorganisms like viruses, bacteria, protists, and fungi that cause infectious diseases by infecting plants or animals through direct contact, water, or air.

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Viruses

Very small infectious agents that enter cells, replicate using cell biochemistry, and cause cell bursting, releasing copies into the bloodstream.

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Bacteria

Small microorganisms that multiply rapidly through binary fission, produce toxins damaging cells, and cause diseases.

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Protists

Microorganisms, some parasitic, that use humans and animals as hosts, living on or inside them and causing harm.

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Fungi

Organisms with single-celled or hyphae body structures that produce spores for reproduction and can spread to other organisms.

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Ways Pathogens Spread

Transmission methods like direct contact (touching contaminated surfaces), waterborne transmission, and airborne transmission (pathogens carried in the air).

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Vaccination

Process of injecting harmless pathogens into the body to develop immunity, preventing infections and transmission of diseases.

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Antibiotics

Medicines that kill bacterial pathogens without harming body cells, reducing deaths from bacterial diseases but facing challenges like antibiotic resistance.

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Monoclonal Antibodies

Identical antibodies produced from the same immune cell, used to target specific proteins or cells in the body for various medical purposes.

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Monoclonal Antibodies

Antibodies that target specific antigens on cancer cells, used in cancer treatment.

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Tumor Markers

Antigens found on cancer cell membranes, targeted by monoclonal antibodies in cancer treatment.

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Plant Pathogens

Viral, bacterial, and fungal agents that cause diseases in plants.

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Chlorosis

Yellowing of leaves due to magnesium deficiency affecting chlorophyll production.

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Plant Defense Mechanisms

Physical, chemical, and mechanical adaptations that plants use to protect themselves from pathogens and predators.