Describe the movement of vesicles along microtubules in the cytoskeleton. Include the following in your answer : microtubules, tubulin, kinesin, dynein, plus end, minus end, and centriole
What will be an ideal response?
Centrioles form microtubules, which are made of tubulin proteins. The microtubules radiate out from the centrioles, with their "minus" ends at the centrioles and their "plus" ends farthest away from the centriole. Motor molecules attach to vesicles and then move along the microtubules. Kinesin can only move toward the plus end of the microtubule; therefore, they always move away from the centriole. Dynein can only move toward the minus end of the microtubule; therefore, they always move toward the centriole.
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Which of the following is incorrect pertaining to the anatomy of the lung and/or pleura?
A) The parietal pleural generally extends three ribs inferior to the lung. B) The bifurcation of the trachea occurs approximately at the level of the sternal angle. C) The right main bronchus is wider and more vertical than the left. D) Each main bronchus supplies a lung. E) The right lung has a horizontal fissure.
When 2,3-bisphosphoglycerate (BPG) levels increase, hemoglobin
A. releases less CO2 to tissues. B. releases more CO2 to tissues. C. releases more O2 to tissues. D. releases less O2 to tissues. E. None of the choices are correct.
A dysfunction of ________ neurons would limit the ability to learn from and mimic the dance steps of an instructor.
A. sensory neurons B. motor neurons C. mirror neurons D. interneurons
When someone taps you on your shoulder, they stimulate the ________ nerve.
A. brachial B. musculocutaneous C. ulnar D. radial E. axillary