Answer:
D. functional tRNAs have been spliced by splicesomes.
Explanation:
Functional tRNAs are not spliced by splicesomes, they are trimmed with the help of RNAases instead.
In all tRNAs, RNAase P cuts at 5'end so as to produce a monophosphate because a phosphodiester bond consists of only one phosphate and 2 sugar molecules.
After that 3'end processing occurs in which RNAase II and RNAase D remove extra nucleotide sequences at 3' end. CCA is added at 3' end later on with the help of enzyme named as tRNA nucleotidyltransferase.
So, there is no role of splicesomes only RNAases and other enzymes are involved in tRNA processing.
The false statement about tRNA is that functional tRNAs have been spliced by spliceosomes. tRNA processing involves cleavage and modification, but not with spliceosomes, and this occurs before tRNAs are active in the cytoplasm for protein synthesis. So the correct option is D.
The correct answer to the question "Which of the following statements about tRNA is FALSE?" is D. Functional tRNAs have been spliced by spliceosomes. This statement is false because tRNA processing does not involve spliceosomes, which are specific to mRNA splicing. It is essential to note that, unlike mRNA, tRNA and rRNA are not translated but are involved in protein synthesis in other roles. In eukaryotes, tRNAs are transcribed and processed in the nucleus, but they undergo further processing that includes splicing, methylation, and sometimes nucleotide modification but not by spliceosomes. Following the processing, tRNAs are then exported to the cytoplasm.
tRNA molecules are typically depicted in a two-dimensional cloverleaf pattern, but in three dimensions, they adopt an L-like shape. The molecule is folded due to intramolecular base pairing, creating a structure with an anticodon at one end and an amino acid binding site at the other. Importantly, the anticodon of a tRNA is complementary to the mRNA codon, enabling the tRNA to bring the correct amino acid to the growing polypeptide chain during protein synthesis.
#SPJ3
B. Kinetic energy
C. Potential energy
D. Heat energy
Answer: I do think its a good idea cause it lessens pollution in the air we breathe in and stops us from burning fossil fuels
Explanation:
Banning passenger cars and promoting public transportation in cities is a good idea for reducing pollution and traffic congestion.
I believe that banning passenger cars and promoting the use of public transportation in cities is a good idea. This approach can help reduce air and noise pollution, alleviate traffic congestion, and improve overall quality of life. By encouraging people to walk, bike, or use public transportation, cities can create a more sustainable and livable environment for their residents.
One example of a city that has successfully implemented this approach is Copenhagen, Denmark. The city has an extensive public transportation system, including a well-connected network of bike lanes. As a result, more than 60% of residents commute by bike or public transportation. This has significantly reduced air pollution and traffic congestion in the city.
Additionally, adopting this approach can have numerous benefits, such as promoting physical activity, reducing carbon emissions, and improving public health. Overall, I believe that cities with comprehensive public transportation systems should consider implementing policies that restrict the use of passenger cars in order to create a cleaner, more sustainable urban environment.
Answer:
The bartender of the Private Club
Explanation:
someone said that above me and i believe that is right :)
Answer:
The exchange of oxygen and carbon dioxide between the alveoli and bloodstream (via passive diffusion)
Explanation:
;)
Answer: The exchange of oxygen and carbon dioxide between the alveoli and bloodstream
Explanation:
I hope this helps