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Most RNA molecules are single-stranded but an RNA molecule should hold regions that can form complementary base pairing where the RNA strand loops back on itself in the above figure. If so, the RNA will have few double-stranded regions. The Ribosomal RNAs (rRNAs) and transmit RNAs (tRNAs) exhibit substantial secondary structure, as do some messenger RNAs (mRNAs).
figure: An example of self-complementarity in RNA, forming an internal double-stranded region; hydrogen bonding between bases is shown by the symbol •.
A red blood cell has an internal salt concentration of 150mM. The cell is placed in a beaker of 500mM salt. (a) Assuming that the cell membrane is permeable to water but not to
Define Recommended Dietary Allowance for Folate (RDA)? Folate requirements are the intake levels necessary to prevent deficiency with clinical symptoms. The requirements are ex
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How does the absence of a nuclear envelope in prokaryotes prevent prokaryotes from controlling gene expression by modifying RNA after transcription? Without a nuclear envelope
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Enzyme glutamate oxaloacetate transaminase catalyzes the reaction between glutamate and oxaloacetate with the formation of a-ketoglutarate and aspartate due to transfer of one
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