A __________ is an animal with a body temperature that varies in response to environmental conditions
Fill in the blank with the correct word.
Answer: Poikilotherm
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If a thyroid tumor secreted an excessive amount of calcitonin, we would expect ___________.
A. an elevated level of osteoclast activity B. an elevated level of osteoblast activity C. a reduced rate of endochondral ossification D. a rise in blood calcium concentration E. increasingly brittle bones
The largest vessels of the lymphatic system are the
A. collecting ducts. B. lymphatic trunks. C. lymph nodes. D. lymphatic capillaries. E. lymphatic collecting vessels.
About 80% of the human skeleton is replaced yearly as a result of bone remodeling.
Answer the following statement true (T) or false (F)
Which pathogen (within the mother) is most likely to be transmitted across the placenta?
A. A blood-borne virus that is present during the sixth week of pregnancy B. A multicellular parasite that is present during the first week of pregnancy C. A blood-borne virus that is present during the first week of pregnancy D. A multicellular parasite that is present during the sixth week of pregnancy