How does initiation of translation differ in eukaryotes and prokaryotes?
What will be an ideal response?
Ans: In prokaryotes, the assembly of the 30S subunit occurs directly over the AUG via base pairing between the ribosome-binding site and the 16S rRNA. There is no complementarity between the sequences surrounding the AUG and the 18S rRNA of eukaryotes. Instead, initiation factors bind both the 5? methyl G cap and the poly(A) tail, and assemble with the 40S subunit at the 5? methyl G cap. The 40S subunit scans the mRNA from the 5? end until ribosomal proteins recognize the initiator region, or the ribosome-binding site. This sequence is NNNPuNNAUGG, where AUG is the initiator codon.
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A. chemiosmosis. B. glycolysis. C. the Krebs cycle. D. the Calvin cycle. E. the passing of electrons from photosystem I to an electron transport chain.
What type of thinking is required?
What will be an ideal response?
Thigmotropism is a growth response to
a. light. b. day length. c. contact with a solid object. d. circadian rhythms. e. gravity.
__________ can lead to the loss of genetic diversity. Fill in the blank(s) with the appropriate word(s)