Testosterone is produced by the ________, under influence of the hormone ________.
A. interstitial cells; LH
B. spermatogonia; FSH
C. spermatogonia; LH
D. interstitial cells; testosterone
Answer: A
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The bulk movement of air into and out of the lungs is called ________.
A. evacuation B. perspiration C. respiration D. ventilation
Bases reacting with acids form ________ and water
A) new elements B) proteins C) salts D) buffers
Why does fever aid in the fight against pathogens?
What will be an ideal response?
What is the function of a catalyst in a chemical reaction?
A. It ensures that the reaction can proceed only in one direction, from reactants to products. B. It lowers the activation energy of the reaction. C. It is split into individual molecules that are products of the reaction. D. It generates heat that makes the reaction proceed. E. It changes the energy content of the reactants.