Practice Questions - Practice Questions These questions are...

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Practice Questions These questions are for practice. All possible content may not be represented in this subset of questions. 1. The study of the normal functioning of an organism, including all chemical and physical processes is called physiology 2. The organ system responsible for protection and thermoregulation is integumentary 3. The organ system responsible for secretion of regulatory hormones is endocrine 4. The organ system responsible for gas exchange is respiratory 5. A collection of similar tissues that performs a specific function is organ level 6. Diagram a negative feedback loop for the control of glucose after eating. Identify the stimulus, sensor, integrating center, effector. Increase glucose after eating – sensor (pancreas) – int center (pancreas release insulin) – many body cells – decrease glucose levels. Practice Questions These questions are for practice. All possible content may not be represented in this subset of questions. 1. What does the term passive mean? No energy 2. List 3 processes that are passive. Osmosis, simple diffusion, facilitated 3. The major extracellular ion is Na. The major intracellular ion is K 4. This gradient is maintained by the pump 5. List two reasons that the body “wants” to maintain the gradients of ions. Provides energy for couple transport of other molecules. Na and K gradient produces electrochemical impulses in nerve and muscle cells. 6. Active transport means that a substance is moving from low to high concentration. 7. The passive movement of water from an area of high water concentration to low water concentration is called osmosis
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8. Which of the following statements do not describe a property of diffusion (two statements are incorrect). a. Molecules move from high to low concentration b. Diffusion is rapid over short distance, slow over long distances (the shorter the distance the faster the diffusion) c. Diffusion is directly proportional to the thickness of the membrane (the thicker the membrane the faster the diffusion)!!!!!! d. Temperature does not affect diffusion rate!!!!!! 9. What does the statement homeostasis does not mean equilibrium mean? Some things like na or k gradient are not in equilibrium but are still maintained that way in homeostasis due to the body’s use of that gradient 10. Water always moves to a/an hypertonic solution. 11. A solution in which the solute concentration is greater than the solute concentration on the inside of the cell is called a/an hypertonic solution. 12. When the energy for transporting a molecule against a concentration gradient comes directly from ATP, this is called (facilitated diffusion, primary active transport!!!!!, secondary active transport). 13. A cell placed in a hypotonic solution will burst 14. Inside of a cell, the mOsM is 300 mOsM, Outside of the cell, the milliosmolarity is 250 mOsM. Which side (inside or outside) is the hyperosmotic solution? Inside is hyperosmotic 15. The law the states that any gain must be offset by an equal loss (in order for homeostasis to be maintained) is law of mass balance 16.
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