SUMMER 2010 - BIO 1161 - QUIZ 7

SUMMER 2010 - BIO 1161 - QUIZ 7 - 10 Which of thd following...

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10. Which of thd following is an advantage of closed circulatory systems as compared to Open circulatory systems? a. Transport occurs more rapidly. ._ b. Closed systems can direct blood to specific tissues. c. Cells and large molecules can be kept separate from the animal's intercellular material. d. Clo-.ed circulatory systems can support higher levels of metabolic activity. e. All of the above 11. Refer to the diagra e below, to answer the i that follows. True or False: "f 12. ' Each rnyofibril is a bundle of sarcomeres. "T I fiber contains actin and m osin •e: 15. ~V The myosin heads have ATPase activity and interact with the actin. 16. V Smooth muscle cells are multinucleate. "T" 18. T Ana< 19. T Acir parts of the body by diffusion. . V Mammals have one atrium and two ventricles in their hearts.
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Monday, June 28 Ih , 2010 BIOL 1161: INTRODUCTION TO BIOLOGICAL SCIENCE LABORATORY Quiz #7 Lab 14 and Lab 15, Ex. E & F (90%); Lab 15, Exercise 6 (10%) MULTIPLE CHOICE; (2.5 pts/ea} 1. How do muscle fibers shorten during contraction? b. More cross-bridges are formed between filaments. (c7~ Arrays of filaments overlap each other. 2. How_do actin
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