An __________ protein is one that spans the entire membrane or is fixed in it
Fill in the blank with the correct word.
Answer: Integral membrane
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Which sequence correctly lists the changes that allow the thick and thin filaments to slide past one another in skeletal muscle contraction?
A. Pivot - attach - detach - return B. Attach - detach - pivot - return C. Pivot - attach - return - detach D. Return - pivot - attach - detach E. Attach - pivot - detach - return
Erythrocytes transport oxygen and __________.
A. defend the body against pathogens B. initiate blood clotting C. regulate erythropoiesis D. transport nutrients E. transport some carbon dioxide
During a race, a long-distance runner twisted his ankle. He finished the race without feeling any pain in his ankle. This lack of the perception of pain could be the result of an increase in ________.
A. epinephrine B. somatotropins C. gonadotropins D. beta endorphins E. lipotropins
The postganglionic fibers that connect an sympathetic ganglion and carry fibers that innervate glands and smooth muscle of the body wall or limbs are the
A) white rami communicans. B) gray rami communicans. C) posterior ramus. D) anterior ramus. E) dermatomes.