14 Questions
What is the basic unit of ecological organization that is the smallest component of any population?
Organism
Which level of ecological organization encompasses all the interacting populations in a given area?
Community
What does an ecosystem involve interactions between?
Abiotic and biotic factors
In what conditions may organisms compete with each other for resources according to the text?
In all environments with similar needs
What do autotrophs do in nutritional relationships?
Synthesize their own food
Which factor may act as a limiting factor determining the types of organisms in an environment?
Dry environment of desert regions
In a symbiotic relationship where one organism benefits and the other is unharmed, what type of symbiosis is it?
Commensalism
What do decomposers do in an ecosystem?
Break down organic wastes and dead organisms
What determines the species of fish that live in a body of water?
Amount of available oxygen
What occurs in a steady state population over several years?
Population remains relatively constant
What is the characteristic physical nature of amyloid?
Nonbranching fibrils, Cross-β-pleated sheet conformation
Which autoimmune disease is characterized by central necrosis rimmed by palisaded histiocytes in the rheumatoid nodule?
Rheumatoid Arthritis
In Hashimoto Thyroiditis, what is the main cause of thyroid epithelial cell depletion and mononuclear inflammatory infiltration?
Autoantibodies against thyroid antigens
What is a characteristic feature of Polyarteritis Nodosa (PAN) and other vasculitides?
Necrotizing inflammation of blood vessel walls
Learn about the origins and basic concepts of ecology, which is the study of interactions between living organisms and their environment. Explore the ecological organization levels from organism to ecosystem.
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