bio 1 test 3 - PRINTABLE VERSION Test 3 You scored 90.81...

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PRINTABLE VERSION Test 3 You scored 90.81 out of 108.99 Question 1 Your answer is CORRECT. Exchange of material with its external environment can be problematic for larger, multicellular organisms due to the reduction of the surface area to volume ratio as size increases. Which of the following are adaptations that allow such organisms to overcome this issue? A) The presence of specialized tissues and organ systems to maintain the different physiological requirements of the organism. B) The highly branched and folded surfaces of certain tissues (e.g., lungs, intestinal tissue) to facilitate exchange. C) Possessing a body plan that maximizes exchange with the environment. D) All are adaptations that larger organisms would possess. Question 2 Your answer is CORRECT. Which of the following statements about tissues is false ? A) Movement functions involve muscle tissue. B) Connective tissue contains an extensive extracellular matrix and provides support, form, and flexibility to structures. C) Epithelial tissue can have secretory functions and line body cavities and organs. D) An organ is usually only composed of a single type of tissue. E) Communication functions in the body are generally carried out by nervous tissue. Question 3 Your answer is CORRECT. A hypothetical physiological parameter is maintained in a proper homeostatic range as shown above. Eventually, a stimulus causes this parameter to deviate from this set point range. Which of the following is false concerning this model? A) Physiological mechanisms would respond by reducing the stimulus until the set point range has been reached.
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B) Sensors detect information regarding the state of this system. C) A negative feedback control mechanism would ensure that the response to correct this deviation continues to increase after the set point range has been reached. D) The nervous system and endocrine system work together to maintain systems in homeostasis. E) None of A-D are false; all are correct. Question 4 Your answer is CORRECT. A poikilotherm's body temperature _________ as the environmental temperatures vary, and is usually considered an _______ because they rely mainly on external heat sources to control body temperature. A) varies; ectotherm B) remains constant; endotherm C) varies; homeotherm D) remains constant; ectotherm Question 5 Your answer is CORRECT. In response to a 10 degree C rise in environmental temperature, an endotherm's body temperature will A) increase B) decrease C) remain relatively constant. D) wildly fluctuate up and down. Question 6 Your answer is CORRECT. As the environmental temperature declines from 25 to 0 degrees C, the appropriate response by an endotherm would be all the following, except : A) increase metabolic heat production B) vasodilation of skin blood vessels C) thermogenesis by muscle shivering D) seek sunlight E) all the above are appropriate responses in this environment Question 7 Your answer is CORRECT. For which pair are the terms
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bio 1 test 3 - PRINTABLE VERSION Test 3 You scored 90.81...

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