Membrane-bounded organelles facilitate faster chemical reactions because:a
reactants are within close proximity to each other.
b. membranes lower the activation energy of biochemical reactions.
c. membrane-bounded organelles act as catalysts for biochemical reactions.
d. reactants move faster within membrane-bounded organelles.
e. reactants are less likely to encounter each other within membrane-bounded organelles.
A
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Each replication fork requires both leading and lagging strand synthesis because
A. DNA synthesis must be complementary. B. DNA polymerases can only synthesize DNA 3' to 5'. C. the DNA templates are antiparallel and yet the DNA polymerases only work in one direction. D. the helicase unwinds one strand faster than the other. E. All of these choices are correct.
The ______ is a distinguishing feature found in the embryonic stage of all chordates that provides axial support.
a. dorsal hollow nerve cord b. spinal cord c. notochord d. vertebral column
The hormone involved in childbirth that participates in a positive feedback loop is
1.estrogen. 2.progesterone. 3.somatostatin. 4.oxytocin. 5.vasopressin.
Which proteins would you target if you wanted to disrupt the chromosome superstructure for chromatin condensation that ultimately produces the characteristic shape of the metaphase chromosome?
What will be an ideal response?