The A, P, and E sites are progressively occupied by amino acids being assembled into a polypeptide. These sites are part of
A. the spliceosome.
B. the large ribosomal subunit.
C. tRNA.
D. mRNA.
E. DNA.
Answer: B
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The Asian kudzu bug (Megacopta cribaria) arrived in Atlanta in 2009 and is quickly spreading across the South. In addition to eating kudzu, it also eats soybeans and can decimate entire crops. The kudzu bug is a type of ________ species.
A. control B. keystone C. invasive D. umbrella
What cells do not participate in a defense response?
a. erythrocytes b. neutrophils c. lymphocytes d. eosinophils e. monocytes
One line of evidence that humans arose in Africa is the observation that Africans have
A. the most diverse mitochondrial DNA sequences. B. rRNA sequences that place them in the domain Archaea. C. fewer genes. D. slower molecular clocks. E. the most diverse nuclear DNA sequences.
Movement of molecules or ions from a region of higher to lower concentration; it requires no energy and tends to lead to an equal distribution (equilibrium).
What will be an ideal response?