Cblpolar cells D) rods and cones
umamireceptor? A chocolate milk B a slice of roast beef C acidic orange juice D salt water
Answer of the 5 questions. Start the answer Short answer with the question number, 1. What are the main differences between spermatogenesis and oogenesis? What causes the depolarization of the membrane in an action potential? What leads to menstruation? Some birds like the California condors are recently known to reproduce asexually by parthenogenesis. What would be a disadvantage of this reproductive strategy if widespread in a population? 5. What causes of vision loss can be corrected by genetic therapy?
Of contraction of skeletal muscle cells A) myosin filaments coil up and shorten B) sarcomeres coil up and shorten C actin cross-bridges bind to myosin and transition from a high-energy to a low-energy state D myosin cross-bridges bind to actin and transition from a high-energy to a low-energy state 68. Most of the ATP supplies for a skeletal muscle undergoing prolonged exercise come from A) the transfer of a phosphate group from creatine phosphate B) glycolysis C) tropomyosin binding to calcium D) glucose metabolized by aerobic respiration 69. For the following five events, which is the correct sequence that describes the excitation and contraction of a skeletal muscle fiber? 1. Tropomyosin shifts, exposing the myosin-binding sites on actin 2. Calcium is released from the sarcoplasmic reticulum and binds to the troponin complex. 3. An action potential is propagated down the transverse tubules. Cycles of myosin cross-bridge formation 4. and breakdown cause the thin filaments to slide toward the center of the sarcomere. An action potential in a motor neuron 5. causes the axon to release acetylcholine, which triggers an action potential in a muscle fiber A12345
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