Question

conservative fashion C) Synthesis of the lagging strand requires more helicase enzymes than synthesis of the leading strand, D) The lagging strand has a higher mutation rate than the leading strand. The correct answer is A. Answer B is wrong because DNA replication happens in a semi-conservative manner for all DNA molecules. Answer is wrong because only one helicase is needed at the replication fork. Answer Dis wrong because there is only one type of DNA polymerase to elongate the new DNA strands, and it has a fixed mutation rate. Question 1 1 pts • The question is about the ability of ncRNAs to bind to other molecules. • This is an analysis question because you are asked you to identify key factors in the binding of ncRNAs to other molecules The sequence of a short ncRNA is S'AGCCCUAUGACGUU 3: To what is this ncRNA likely to bind? A) A small molecule, such as a calcium ion B) An mRNA that contains the sequence 3 GAUACUG 5 C) Part of the genome that has the sequence S'AGCCCTATGACGTT 3 D) Two subunits of the ribosome HTML Editor MacBook Air

hi! it has to be answered in the format shown above the question. so you say the correct answer but then you go through each one and say why the other choices are incorrect one by one.

Answer 1

An ncRNA is a non-coding RNA. The RNA is transcribed from the genome by the RNA Polymerase. However, this RNA is not translated into a protein product.

Instead, it works by regulating the translation of mRNAs. It binds to a complementary mRNA strand thereby preventing it from being translated thus acting as a translational inhibitor.

ncRNA doesn't bind to calcium ion. It also does not regulate at the transcriptional level, hence it does not bind to the DNA.

Also it does regulate but not by binding to the ribosomal complex.

Hence the correct option is b.