The Total of All the Resources,both Biotic and Abiotic,that a Species

question 97

Multiple Choice

The total of all the resources,both biotic and abiotic,that a species exploits for its survival,growth,and reproduction is its

• A)competitive zone.
• B)habitat.
• C)food web.
• D)niche.
• E)biospherE.

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Definitions:

Antigen-presenting Cells

Specialized immune cells that capture antigens and present them on their surface to T-cells, initiating an immune response.

Helper T Cells

White blood cells that play a critical role in the immune system by activating other immune cells to fight off infections.

Cytokines

Small proteins released by cells that have a specific effect on the interactions and communications between cells, often involved in immune responses.

Antigens

Substances that are recognized by the immune system and can elicit an immune response, often foreign proteins or polysaccharides found on pathogens.