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Kathryn Stadler

Physiology Weeks 1-6

QuestionAnswer
How does a positive feedback loop differ from a negative feedback loop? The difference between negative and positive feedback systems is that in negative feedback systems, the response reverses the original stimulus, but in positive feedback systems, the response enhances the original stimulus.
Define circadian rhythm. The natural cycle of physical, mental, and behavior changes that the body goes through in a 24-hour cycle
What element is present in all proteins but not in carbohydrates? Nitrogen
Name two important nucleic acids DNA and RNA
What causes Osmotic pressure to develop in a cell? Osmotic pressure arises from the tendency of a pure solvent to move through a semipermeable membrane and into a solution containing a solute to which the membrane is impermeable.
How does cytoplasm of a cell grow? Cytoplasm supports and suspends organelles and cellular molecules while performing processes such as cellular respiration for breathing, synthesizing proteins and having division of cells by both mitosis and meiosis
What is a primary germ level? A layer of cells produced during the process of gastrulation during the early development of the embryo as an early step of cell differentiation.
Name 2 different types of bone tissue Compact and Spongy
Which bone is the only bone that normally does not form a joint with any other bone of the skeleton? Hyoid Bone
What is the functional advantage of foot arches? It allows the foot to support the weight of the body in the upright posture with the least weight.
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