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Question 1(multiple choice worth 5 points) (06.04 mc) how are the respiratory and circulatory systems similar? both systems provide glucose and other substances to cells. both systems regulate blood flow throughout the body. both systems remove carbon dioxide from the body. both systems send messages to the nervous system for breathing. question 2(multiple choice worth 5 points) (06.04 lc) the respiratory system controls and the circulatory systems controls antibodies; digestion breathing; blood flow muscles; bones nerves; senses question 3(multiple choice worth 5 points) (06.04 hc) read the following summary, which describes a body process. then, answer the question. blood enters the right side of the heart and travels to the lungs. there, the lungs eliminate carbon dioxide and exchange it for more oxygen. the oxygen-rich blood enters the left side of the heart. then, arteries carry blood away from the heart. what process is being described? circulation excretion immune response respiration question 4(multiple choice worth 5 points) (06.04 lc) the system is responsible for moving blood cells throughout the body. circulatory endocrine immune respiratory question 5(multiple choice worth 5 points) (06.04 mc) which of the following functions as part of the excretory and respiratory systems? blood heart intestines lungs

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When making changes to optimize part of a processor, it is often the case that speeding up one type of instruction comes at the cost of slowing down something else. for example, if we put in a complicated fast floating-point unit, that takes space, and something might have to be moved farther away from the middle to accommodate it, adding an extra cycle in delay to reach that unit. the basic amdahl's law equation does not take into account this trade-off. a. if the new fast floating-point unit speeds up floating-point operations by, on average, 2ă—, and floating-point operations take 20% of the original program's execution time, what is the overall speedup (ignoring the penalty to any other instructions)? b. now assume that speeding up the floating-point unit slowed down data cache accesses, resulting in a 1.5ă— slowdown (or 2/3 speedup). data cache accesses consume 10% of the execution time. what is the overall speedup now? c. after implementing the new floating-point operations, what percentage of execution time is spent on floating-point operations? what percentage is spent on data cache accesses?