What drives the return of blood to the heart in the systemic veins?
A) Ciliated cells lining the inside of the veins B) Muscles squeezing blood through the veins
C) The lymphatic system D) Contractions of the left auricle
B
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The atomic weight is equal to
A. the number of electrons. B. the number of electrons plus neutrons. C. the number of protons. D. the number of neutrons and protons.
The term _________ refers to the alternating surges of pressure in an artery that occur with each contraction and relaxation of the left ventricle.
a. diastole b. murmur c. pulse d. systole
What is the processivity of an enzyme?
What will be an ideal response?
Your lab instructor hands you a root slide and asks you to show her a cell with condensed chromosomes arranged in a straight line. In which section of the root would you begin your search?
A. It doesn't matter; all zones have the same level of mitotic activity. B. Zone of cell division C. Zone of maturation D. Root cap E. Zone of elongation