When you are jogging, your muscles are using more oxygen and releasing more carbon dioxide into the blood than when you are at home on the couch. Which of the following would occur during your jog?
A) Blood pH would become more basic.
B) The concentration of bicarbonate ions (HCO3-) in the blood would decrease.
C) The medullary respiratory center would detect rising carbon dioxide levels.
D) The volume of the dead air space would decrease.
Answer: C
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The organisms living on the bottom of the ocean are collectively referred to as
A) nekton. B) benthos. C) meiofauna. D) epifauna.
Human use of ecosystems
A. is in harmony with natural ecosystems. B. increases the number of animals present. C. requires the alteration of previously existing ecosystems. D. does not occur.
Little Johonny discovered a loss of some of his scalp hair in form of round patches. The doctor diagnosed it as ringworm infection. The docotor found that Little Johnny had a cat which, also, was diagnosed with ring worm. What is the best term to describe Little Johnny infliction?
A. Epidemic B. Enzootic C. Zoonosis D. Enzootic E. Endemic
The human spine acts like a weight-bearing column. Compare this to the spine of a horse, which acts like an elastic suspension bridge. Which organism would you predict to experience more back pain and why?
A) the horse, because its spine is less evolutionarily advanced B) the horse, because its spine supports more organ systems than a human's spine supports C) the human, because in order to walk upright, the human spine must be compressed D) the human, because the human spine has longer neurons