52 public questions tagged with this topic.
Phosphodiester bonds connect nucleotides in a DNA strand, linking the phosphate of one nucleotide to the sugar of another. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Botany section), Chapter: Biology - Botany portion covering relevant concept.
A glycosidic bond connects the sugar (ribose or deoxyribose) to the nitrogenous base in a nucleotide.
Ref: NCERT Class 12 Chemistry > Chapter 14: Biomolecules > Topic: Nucleic Acids - Structure - Nucleotides, Sugars and Base Pairing
DNA is double-stranded in humans, forming a double helix stabilized by hydrogen bonds between base pairs.
Ref: NCERT Class 12 Chemistry > Chapter 14: Biomolecules > Topic: Nucleic Acids - Types and Functions - DNA, RNA
Phosphodiester bonds connect nucleotides in a DNA strand, linking the phosphate of one nucleotide to the sugar of another.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance Human Genome Project and DNA Fingerprinting
The two strands of DNA run in opposite directions (antiparallel) with one strand in the 5' to 3' direction and the other in the 3' to 5' direction.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance Regulation of Gene Expression - Lac Operon
Erwin Chargaff discovered that in a DNA molecule, the amount of adenine is equal to thymine, and guanine is equal to cytosine.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance Search for Genetic Material and RNA World
A nucleotide consists of a phosphate group, a pentose sugar, and a nitrogenous base.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance Search for Genetic Material and RNA World
DNA consists of two antiparallel strands forming a double helix, with complementary base pairing (A-T, G-C).
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance DNA Structure Double Helix and Packaging - Nucleosome
Unlike eukaryotic DNA, prokaryotic DNA is not associated with histone proteins for packaging.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance DNA Structure Double Helix and Packaging - Nucleosome
Hydrogen bonds between complementary base pairs stabilize the DNA double helix.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance DNA Structure Double Helix and Packaging - Nucleosome
The two strands of DNA run antiparallel (one 5' to 3' and the other 3' to 5'), not parallel.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance DNA Structure Double Helix and Packaging - Nucleosome
DNA is composed of nucleotides linked by phosphodiester bonds, forming a double-stranded helical structure.
Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance DNA Structure Double Helix and Packaging - Nucleosome
