Cardiac muscle fibers are electrically coupled by junctions called intercalated discs
____________________ Indicate whether the statement is true or false.
True
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True or False: not all photosynthetic organisms are plants, but one thing they all have in common is that they can only be found within a narrow temperature and moisture range
A. true B. false
The individual credited for coining the term cancer is
A) Paget. B) Hippocrates. C) Folkman. D) Rous. E) Aristotle.
In a population of lemmings, a sudden freeze that caused many of the lemmings to die is an example of a
A) living and density-dependent factor. B) nonliving and density-independent factor. C) living and density-independent factor. D) normal boom-and-bust cycle. E) nonliving and density-dependent factor.
Which of the following statements about M protein is FALSE?
A) It is found on Streptococcus pyogenes. B) It is found on fimbriae. C) It is heat- and acid-resistant. D) It is readily digested by phagocytes. E) It is a protein.