Sperm cells multiple by __________
Fill in the blank(s) with correct word
meiosis
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What type of fluid is cerebrospinal fluid?
a. transcellular b. lymph c. intracellular d. extracellular e. interstitial
Your muscle cells are able to express a different complement of proteins from your brain cells because
a. they contain different genes. b. muscles and brains are the vestiges of different symbiotic organisms present in our ancestors. c. you inherit the genes for your muscles from your father and the genes for your brain from your mother. d. the expression of muscle-specific genes is regulated by transcription factors not present in brain cells and vice versa.
Active transport proceeds when energy is expended.
Answer the following statement true (T) or false (F)
Compare the anterior cardiac veins to the posterior vein of the left ventricle
A) The anterior cardiac veins drain the anterior surface of all chambers; the posterior vein of left ventricle drains the posterior surface of all chambers. B) The anterior cardiac veins drain the left and right atria; the posterior vein of left ventricle drains the left and right ventricles. C) The anterior cardiac veins drain the left and right ventricles; the posterior vein of left ventricle drains the left and right atria. D) The anterior cardiac veins drain the anterior surface of the right ventricle and empty into the right atrium; the posterior vein of left ventricle drains the area supplied by the circumflex artery (posterior surface of the left ventricle). E) The anterior cardiac veins drain the right atrium and right ventricle and empty into the right atrium; the posterior vein of left ventricle drains the left atrium and left ventricle.