Polyadenylation begins with the binding of ________ near a six-nucleotide mRNA sequence, AAUAAA, downstream of the stop codon
Fill in the blank(s) with correct word
cleavage and polyadenylation specificity factor (CPSF)
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Populations can be described in terms of their diversity and stability
Indicate whether the statement is true or false.
What would be the most likely result if a scientist removes mitochondria from a human cell and attempts to grow them in culture?
A) The mitochondria originated from a prokaryotic cell, so the mitochondria will grow independently in culture. B) Mitochondria require the products of nuclear genes to function, so the mitochondria will die soon after being removed from the cell. C) The mitochondria will continue to produce ATP indefinitely only if a source of pyruvate is provided. D) The mitochondria will grow more quickly in the presence of antibiotics that kill bacteria and reduce competition for resources with bacterial cells.
Thinking about the function of the flower organ, what advantage does a flowering plant have over a nonflowering plant?
A. It is necessary for sexual reproduction. B. It protects and nourishes the embryo. C. It allows fertilization in the absence of water. D. It promotes pollination. E. It allows fertilization in moist areas.
The process of removing some of an athlete's blood, allowing erythropoietin to work and then
reinjecting the removed blood just prior to competition is called a. a transfusion. b. blood concentrating. c. cell separation. d. blood doping. e. plasmaphoresis.