Blood passing out of arterioles next enters the ____
a. capillaries
b. arteries
c. veins
d. venules
e. lymphatic vessels
ANSWER: a
Biology & Microbiology
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Okazaki fragments are attached to the growing end of the lagging strand by ________.
A. DNA ligase B. DNA polymerase C. DNA helicase D. DNA gyrase E. primase
Biology & Microbiology
A mechanism of gene regulation that controls the amount of mRNA available for translation is called ____________________
Fill in the blank(s) with correct word
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The Calvin cycle can only produce sugar if ______ can enter through the pores of the leaves.
A. water B. O2 C. CO2 D. N2 E. potassium
Biology & Microbiology
Vascular plants and air-breathing animals first appeared during the:a
Silurian period. b. Ordovician period. c. Cambrian period. d. Permian period. e. Cretaceous period.
Biology & Microbiology