BIOLOGY
NUCLEIC ACIDS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
mRNA strand is shorter and single stranded
|
|
|
mRNA strand is longer and single stranded
|
|
|
mRNA strand is shorter and double stranded
|
|
|
mRNA strand is longer and double stranded
|
Detailed explanation-1: -DNA is a double-stranded molecule that has a long chain of nucleotides. RNA is a single-stranded molecule which has a shorter chain of nucleotides. DNA replicates on its own, it is self-replicating. RNA does not replicate on its own.
Detailed explanation-2: -In addition, because they are copied from only a limited region of the DNA, RNA molecules are much shorter than DNA molecules. A DNA molecule in a human chromosome can be up to 250 million nucleotide-pairs long; in contrast, most RNAs are no more than a few thousand nucleotides long, and many are considerably shorter.
Detailed explanation-3: -Physically, mRNA is a strand of nucleotides known as ribonucleic acid, and is single-stranded.
Detailed explanation-4: -An mRNA transcript is a single strand of RNA that encapsulate the information contained in a gene. Think of an mRNA transcript as a portable gene: smaller and more mobile than the DNA sequence that it is built from, but containing the same information.
Detailed explanation-5: -Messenger RNA (abbreviated mRNA) is a type of single-stranded RNA involved in protein synthesis. mRNA is made from a DNA template during the process of transcription.