During long, sustained aerobic exercise, a lot of heat is generated that elevates body temperature. Describe how a homeostatic control system would likely work to cool body temperature back to normal. Specify each component of the control system
What will be an ideal response?
In this case, the controlled variable that needs to be realigned is body temperature — it is too hot. A negative feedback control system would be expected to respond by generating an effector response that moves the controlled variable in the opposite direction of what aerobic exercise induced. Typically sweating and panting help release heat so that normal body temperature can be reached.
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Answer the following statements true (T) or false (F)
1. If lithium has an atomic number of 3 then it will have 1 valence electron. 2. The electronegativity of an atom is a measure of its ability to attract electrons to its outer shell from another atom. 3. Table salt forms from sodium and chloride via hydrogen bonding. 4. Molecules are generally rigid structures and rarely change shape.
The sodium-potassium pump of neurons pumps
A. Na+ and K+into the cell. B. Na+ and K+ out of the cell. C. Na+ into the cell and K+ out of the cell. D. Na+ out of the cell and K+into the cell. E. Na+ and K+into the cell and H+ out of the cell through an antiport mechanism.
Is a mutation more likely to be lethal if it impacts early or late stages in development? What will be an ideal response?
Whales are descendants of
A. a relative of a hippopotamus. B. sharks. C. manatees. D. a relative of the duck-billed platypus. E. a relative of the rhinoceros.