Once a sperm enters a secondary oocyte, ________.
A. meiosis I of the oocyte begins
B. other sperm quickly follow into the oocyte
C. meiosis II of the oocyte begins
D. mitotic division of the oocyte begins
Answer: C
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The fourth ventricle is in the
A. right cerebral hemisphere. B. brainstem. C. left cerebral hemisphere. D. midline of the brain, beneath the corpus callosum.
For normal sperm development, the testes must be kept about
A) the same temperature as the brain. B) 1.1°C cooler than core body temperature. C) 1.1°C warmer than core body temperature. D) 4.8°C cooler than core body temperature. E) 4.8°C warmer than core body temperature.
Cellulose is the
A. storage carbohydrate in animals. B. nondigestible plant polysaccharide. C. major nutrient for most body cells. D. sugar found in RNA. E. storage carbohydrate in plants.
What does "C" represent on the diagram?
A. Cross-bridge B. Myosin myofilament C. Sarcomere D. Z disk E. Actin myofilament