of the following statements is correct? b. Wa Introns are spliced out of bacteri
ID: 144983 • Letter: O
Question
of the following statements is correct? b. Wa Introns are spliced out of bacterial mRNAs in the cytoplasm b. The polyA tail is added to bacterial mRNAs at the end of transcription c. Bacterial mRNAs are often polycistronic (multiple genes at once)r they are transported out of d. In bacteria the ribosomes begin translating mRNA molecules after tranispo the nucleus e. Bacterial mRNAs incorporate Thymine and not Uracil. 17. Which of the following is NOT a biologically significant electron carrier (in a. b. . d. e. NAG FADH2 NADPH NADH None of the above (all are reduced electron carriers) 18. The ATP synthase enzyme is directly powered through... a. Substrate level phosphorylation b. The reducing power of NADH c. Photons d. The hydrolysis of ATP e. None of the above 19. Where do we know chemolithotrophic bacteria make life possible for a complex ecosystem without direct input of energy from the sun? a. On mars b. In the molten magma of volcanoes c. In your large intestine d. In deep sea e. None of the above l vents the 20. The end of the nucleic acid chain that grows by adding more nucleotides is always a. 5' end b. C terminal end c. N terminal end d. 3' encExplanation / Answer
16) C
Polycistronic mRNA refers to a messenger RNA which encodes two or more proteins. Polycistronicmessenger RNAs participates in the process of protein synthesis (translation) in prokaryotes.
17)A (NAG)
N acetyl glutamic acid is a part of a biopolymer in bacterial cell wall and it is not Electron carrier .
And rest of the options are electron carriers in reduced from .
18)E
ATP synthase is an enzyme which is responsible for the synthesis of the ATP in a plants during the photosynthesis.
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