Which of the following scientists first observed the actual fertilization of the egg by the sperm in sea urchins?
A. Henry Havelock Ellis
B. Oskar Hertwig
C. Anton van Leeuwenhoek
D. Richard von Krafft-Ebing
B. Oskar Hertwig
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On axial CT images, the ureters are seen entering the bladder along the lateral border.
Answer the following statement true (T) or false (F)
A theta wave is a type of ________
A. brain wave associated with critical thinking B. brain wave associated with sleep spindles C. low frequency, high amplitude brain wave D. low frequency, low amplitude brain wave
Imagine someone who drank too much water before running a race. Their very watery blood would have
A. high viscosity and therefore have high resistance. B. high viscosity and therefore have low resistance. C. low viscosity and therefore have high resistance. D. low viscosity and therefore have low resistance.
Why is it necessary for the cell to degrade some cellular proteins?
A. To eliminate incorrectly folded proteins B. For tight control of the cell cycle C. To remove specific enzymes and plasma membrane proteins D. All of the choices are correct.