What is RNA

This video tutorial explains the roles of DNA and RNA in cells. DNA serves as the blueprint containing instructions for cell growth, function, and replication, while RNA carries out these instructions by transferring the genetic code to produce proteins. The video highlights the differences between DNA and RNA, such as DNA being double-stranded and RNA single-stranded, and the presence of uracil in RNA instead of thymine. It also covers RNA's role in protein synthesis, including mRNA and tRNA functions, and discusses RNA's enzymatic capabilities and its role in viruses.

What is the primary function of DNA in the cell?

• To transfer genetic code to RNA

• To carry out instructions for protein synthesis

• To act as enzymes in chemical reactions

• To store and provide instructions for cell growth and replication

Which of the following is a key structural difference between DNA and RNA?

• DNA is found in the cytoplasm, while RNA is found in the nucleus

• DNA contains thymine, while RNA contains uracil

• DNA contains ribose sugar, while RNA contains deoxyribose sugar

• DNA is single-stranded, while RNA is double-stranded

In RNA, which nucleotide base pairs with adenine?

• Uracil

• Guanine

• Cytosine

• Thymine

What is the role of mRNA in protein synthesis?

• To speed up chemical reactions

• To transfer amino acids to ribosomes

• To carry the genetic code from DNA to the ribosome

• To act as a photocopier of DNA

How does RNA function in some viruses?

• As a substitute for proteins

• As a structural component of the cell

• As a carrier of genetic codes

• As a double-stranded genetic material