Nucleic Acids and Their Functions

The video tutorial covers the basics of nucleic acids, focusing on DNA and RNA. It explains their structures, functions, and differences, including the role of nucleotides and polymers. The tutorial delves into the nitrogenous bases, categorizing them into purines and pyrimidines, and discusses the differences between nucleosides and nucleotides. It also covers the structure of DNA, including the sugar-phosphate backbone and complementary base pairing, emphasizing the anti-parallel nature of DNA strands.

What is the primary function of DNA in the cell?

• To synthesize proteins

• To store genetic information

• To provide energy

• To transport molecules

Which type of RNA is responsible for carrying genetic information from DNA to the ribosome?

• Ribosomal RNA

• Transfer RNA

• Catalytic RNA

• Messenger RNA

What is the sugar component of RNA?

• Ribose

• Deoxyribose

• Fructose

• Glucose

Which nitrogenous base is found in RNA but not in DNA?

• Thymine

• Adenine

• Uracil

• Cytosine

Which of the following is a purine?

• Cytosine

• Thymine

• Adenine

• Uracil

How many rings do pyrimidines have in their structure?

• Four

• One

• Two

• Three

What distinguishes a nucleotide from a nucleoside?

• Presence of a hydroxyl group

• Presence of a sugar

• Presence of a phosphate group

• Presence of a nitrogenous base

What is the name of the nucleoside formed when cytosine is combined with ribose?

• Cytosyl

• Cytosine

• Cytidylate

• Cytidine

In DNA, which base pairs with adenine?

• Cytosine

• Thymine

• Guanine

• Uracil

What type of bond holds the two strands of DNA together?

• Hydrogen bonds

• Metallic bonds

• Covalent bonds

• Ionic bonds