If your pulse is 70 beats per minute, how fast is your heart beating?
A. 140 beats per minute
B. 35 beats per minute
C. 70 beats per minute
D. 80 beats per minute
E. 120 beats per minute
Answer: C
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When Bayliss and Starling conducted experiments to
determine what caused secretion of pancreatic juice, they a. cut the blood supply to the upper digestive tract. b. added acidic food to the small intestine and got secretions of pancreatic juices. c. cut the nerve supply to the upper digestive tract. d. got a response from the pancreas using extracts of cells lining the intestinal tract. e. did all of these except “cut the blood supply to the upper digestive tract.”
Which of the following statements about Figure 4-1 is true?
a. Figure B has a greater surface area than Figure A.
b. Figure B has a greater volume than Figure A.
c. Figure B has a smaller volume than Figure A.
d. Figure B has a greater surface area to volume ratio than Figure A.
e. Figure B has a smaller surface area to volume ratio than Figure A.
Which of the following statements is true of bacteria on this planet?
A) There are more helpful than harmful bacteria. B) There are more harmful than helpful bacteria. C) There are about as many helpful as harmful bacteria. D) Bacteria have neither a positive nor a negative impact on human society.
One of the evolutionary advantages of having two eyes is that
A) two lenses provide greater magnification. B) overlapping fields of view provide uninterrupted images. C) there are more sensory neurons for greater action potentials. D) the blind spot is eliminated.