A student noticed that every time he smelled a certain perfume in the hallway, it reminded him of his mother. This is due largely to the activity of the limbic system
Indicate whether the statement is true or false
TRUE
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Which of the following statements about enzymes is FALSE?
A. The active site of the enzyme is where the chemical reaction takes place. B. The substrate binds to the enzyme with low affinity. C. The enzyme undergoes a conformational change that brings substrates closer together in an induced fit. D. The optimal activity of an enzyme occurs over a narrow temperature range. E. The optimal activity of an enzyme occurs within a narrow pH range.
Suppose you want to DECREASE the aggressive behavior of an animal, and all you are allowed to use is a nutritional supplement. Which might be a good choice?
a. increase tryptophan b. decrease thiamine c. decrease lecithin d. increase phenylalanine
The classical pathway for complement activation is initiated by
A) lipid-carbohydrate complexes and C3. B) C5-C9. C) antigen-antibody reactions. D) factors released from phagocytes. E) factors released from damaged tissues.
What was the dominant life form of the Mesozoic era?
a. fish b. reptiles c. mammals d. amphibians e. vascular plants