Protein structure is conceptually divided into four levels, from most basic to higher order: primary structure describes the order of amino acids in the peptide chain. secondary structure describes the basic three-dimensional structures, α-helices and β-sheets. tertiary structure describes how the secondary structures come together to form an individual globular protein. quaternary structure results from individual proteins coming together to form multi-subunit protein complexes.

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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the answer you are looking for is the united states forest service.

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homeostasis is the tendency towards a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes. and this is how it applies to the integumentary system. back to top. skin functions in homeostasis include protection, regulation of body temperature, sensory reception, water balance, synthesis of vitamins and hormones, and absorption of materials. when body temperature falls, the sweat glands constrict and sweat production decreases.