BIO 203 final exam(2024 Latest Update)(Rated A+)

BIO 203 final exam(2024 Latest Update)(Rated A+) List the 3 different fluid compartments of the body. - ANSWER Intracellular Fluid, Interstitial Fluid, Plasma What is the definition of homeostasis? - ANSWER The regulation of the body's internal environment in a narrow range Describe the difference between intrinsic and extrinsic regulation - ANSWER Intrinsic is local to the regulated area. Extrinsic is regulating an area from somewhere else usually the nervous or endocrine system. Describe the difference between a feedback and feed-forward response. - ANSWER Feedback - makes adjustments after a change has been detected. Feed forward - makes adjustments before a change occurs. Describe the difference between a negative and a positive feedback system. - ANSWER Negative - the response generated opposes the initial detected change. Positive - the response generated increases in the same direction (or strengthens) the initial detected change. What are the 3 components to all negative feedback systems? - ANSWER Sensor, Control Center, Effector List the 3 components of a membrane. - ANSWER Lipids, Proteins, Carbohydrates. What does it mean for a molecule to be amphipathic? - ANSWER A complex molecule where part of the molecule is Polar and part of the molecule is Non-polar. How is a phospholipid amphipathic? - ANSWER Polar head and Non-polar tails What are 2 functions of cholesterol in the plasma membrane? - ANSWER Fluidity and Stability List the 3 specialized types of cell junctions. - ANSWER Gap junctions, Tight junctions, and Desmosomes. List 3 methods of membrane transport. - ANSWER Simple Diffusion Facilitated Transport