Pronghorn antelopes are able to run at high altitudes where oxygen is scant relative to low altitudes for long periods of time. This ability is attributed to the superabundance of mitochondria in their limb muscles. This explanation could be considered
a. mechanistic.
b. evolutionary.
c. both of these.
d. neither of these.
a
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Hormones are normally secreted via ducts into the bloodstream.
Answer the following statement true (T) or false (F)
The property that allows the heart to initiate each heartbeat itself is called ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements concerning cells is incorrect?
a. cells serve as the living building blocks of the body. b. the average human cell is about one hundred times smaller than the smallest particle visible by the unaided eye. c. inanimate chemical molecules are organized within each cell into a living entity. d. cells are generally colorless and transparent so they must be stained for visualization under a microscope. e. the three major subdivisions of a cell are the plasma membrane, the nucleus, and the cytoplasm.
Aspirin and other nonsteroidal anti-inflammatory drugs are more specific in their effects on eicosanoid synthesis than are steroidal anti-inflammatory drugs
Indicate whether the statement is true or false.