MSU PSL 250 Exam with 100% correct answers 2024

What is Physiology? correct answers The study of how the body functions What are the levels of organization within the body (from simple to complex)? correct answers 1) Molecules. 2) Cells. 3) Tissues. 4) Organs. 5) Systems What is Homeostasis? correct answers The maintaining of a "normal" physiological status. What occurs when there is negative feedback within an internal environment (the body)? correct answers There is an event, X, that causes a change away from the normal point. Response, Y, causes a change back to the normal point. What are some examples of negative feedback? correct answers Blood pressure, ion concentrations, muscle reflexes. What happens when there is positive feedback within an internal environment (the body)? correct answers Event, X, creates a new set point. What are some examples of positive feedback? correct answers Blood clotting, parturition. What is Cytosol? correct answers - The liquid portion of a cell that provides the fluid medium for biochemical reactions. - Protein clusters form organized enzyme pathways that enhance metabolism. Intermediary Metabolism correct answers - Chemical reactions of simple sugars, lipids, and amino acids. - These reactions capture the energy used by the cell and provide the raw materials for the cells structure and functions. What are Ribosomes? correct answers Small particles within the rough ER that are the site of protein synthesis. Why is glycogen stored? correct answers - Gylcogen is stored within cells for energy. - Stored in muscles for use during contractions. - Stored in liver to maintain blood glucose between meals. What is the process for protein creation? correct answers Nucleus to Rough ER to Smooth ER to Transport Vesicles to Golgi Complex to Secretory Vesicles to Membrane.