Which of the following are true about rrna ribosomal rna a...

Which of the following are true about rRNA (ribosomal RNA)? a. there are many (hundreds or more) copies of rRNA genes but only a few copies of most genes b. rRNA genes code for RNAs while most genes code for proteins c. all of these are true d. rRNA is catalytic and performs most of the catalytic functions of the ribosome e. rRNA must be combined with ribosomal proteins to make a ribosome Question 50

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00:01 Hi all, so in this question we are here asked to select the statements which is false regarding the ribosomes.

00:13 Also it is asked to explain why the other options are true.

00:19 So in the given options the false statement is different ribosomes are needed to synthesize different protein, synthesize different proteins.

00:48 So this is the only false statement in the given options.

00:55 So the ribosomes themselves are relatively a conserved structure.

01:06 Relatively a conserved structure and this means a variety of proteins can be produced from the different messenger rna.

01:20 This ribosomes is a conserved structure but different proteins are produced as a result of the variety of messenger rna sequences.

01:40 So different ribosomes are needed to synthesize different proteins is a false statement because the ribosome is a conserved structure and for the production of the variety of proteins we need variety of mrna sequences and not the ribosome.

01:57 So here from the given statement the only false statement is this one but in the question itself we are asked to explain why the other options are true.

02:08 So we will see the other options that is the second statement that is ribosomal rnas are produced by the transcription from a genomic dna template.

02:18 So this statement is true because this ribosomal rna or the rrna are transcribed from specific gene, these are transcribed from specific genes in the cell's dna.

02:39 So these rrna plays a crucial role in forming the structure of ribosome and as well as they facilitate protein synthesis.

02:48 Next statement option c that is most of the rna in a cell's cell is ribosomal rna that is rrna that is most of the rna in a cell is ribosomal rrna.

03:13 This statement is also a true statement because when we look at a cell the majority of the rrna present in the cell majority of rrna present in that cell will be this ribosomal rna.

03:31 So this is because this ribosomes are abundantly seen in the cell...

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