Nucleic Acids and Their Properties

The video tutorial covers nucleic acids, focusing on DNA and RNA. It explains the structure of nucleotides, including sugars, nitrogenous bases, and phosphates. The tutorial details the differences between ribose and deoxyribose sugars and the five key nitrogenous bases: adenine, thymine, cytosine, guanine, and uracil. It discusses the structure of DNA and RNA, highlighting the double helix and hydrogen bonding between complementary bases. The formation of phosphodiester bonds is also explained, along with the significance of the DNA double helical structure.

What are the two main types of nucleic acids?

• Proteins and Lipids

• DNA and RNA

• Enzymes and Hormones

• Carbohydrates and Lipids

Which component of a nucleotide makes each nucleic acid unique?

• Phosphate group

• Hydrogen bond

• Sugar

• Nitrogenous base

What is the difference between ribose and deoxyribose sugars?

• Deoxyribose is found in RNA

• Ribose is found in DNA

• Deoxyribose has one more oxygen atom

• Ribose has one more oxygen atom

Which nitrogenous base is found in RNA instead of thymine?

• Adenine

• Uracil

• Guanine

• Cytosine

Which of the following are purines?

• Adenine and Guanine

• Thymine and Uracil

• Thymine and Cytosine

• Cytosine and Uracil

How many hydrogen bonds form between cytosine and guanine?

• Four

• Three

• One

• Two

What is the term for the bond that holds nucleotides together in a strand?

• Covalent bond

• Hydrogen bond

• Ionic bond

• Phosphodiester linkage

What is the structural shape of DNA when two strands come together?

• Quadruple helix

• Triple helix

• Double helix

• Single helix

What is released when a phosphodiester bond is formed?

• Carbon dioxide

• Nitrogen gas

• Water molecule

• Oxygen molecule

Approximately how long is a DNA strand from one end to the other?

• 500 nanometers

• 200 nanometers

• 108 nanometers

• 50 nanometers