Give one natural source for the following organic acids: ascorbic acid, ethonoic acid.

Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis

Which of the following characteristics are true of enzymes? check all that apply. a.)the structure of an enzyme can change if conditions change. b.)a single enzyme can normally catalyze a wide variety of reactions under many conditions. c.)enzymes are found only in nonliving systems. d.)enzymes allow living things to regulate body conditions through feedback mechanisms. e.)enzymes bind to specific substrates in specific ways. f.)enzymes increase the rate of reaction. g.)when shown in energy-reaction diagrams, enzymes represent the higher activation energy.

Amethod of separation that employs a system with two phases of matter, a mobile phase and a stationary phase, is called