Water molecules amongst many.
The two hydrogen atoms in a hydrogen molecule are held together by a covalent bond.
Hydrogen bonding holds together the two strands of a double stranded DNA. Hydrogen bonding exists between the nitrogen base pairs.
DNA strands are held together by hydrogen bonds.
Covalent bonds hold the atoms together in a water molecule. In covalent bonds atoms share electrons.
Ionic bonds are far stronger than hydrogen bonds. Ice is held together by hydrogen bonds, and table salt, which is sodium chloride (NaCl), is held together by ionic bonds. You can hammer on ice and break the hydrogen bonds holding it together with relative ease. But you can hammer all day on salt, turn it to a white powder, and not break the sodium-chlorine bonds (those ionic bonds) in any molecules of salt by doing so.
Hydrogen an oxygen, both being nonmetals, will be held together by a covalent bond.
The Cytosine, Guanine, Adenine and Thymine bases present in DNA are molecules that are held together by intermolecular hydrogen bonds. This bond occurs between an electronegative atom (known as a hydrogen bond acceptor) and a hydrogen atom attached to another electronegative atom (known as a hydrogen bond donor).
The two hydrogen atoms in a hydrogen molecule are held together by a covalent bond.
The nitrogen bases are held together by hydrogen bonds.
Hydrogen bonding holds together the two strands of a double stranded DNA. Hydrogen bonding exists between the nitrogen base pairs.
polar covalent bonds
Diatomic hydrogen is held together by a single non-polar covalent bond.
DNA strands are held together by hydrogen bonds.
Covalent bonding holds the phosphate and deoxyribose together, while the adjacent nitrogen bases are held by hydrogen bond.
The Oxygen and the Hydrogen atoms are held together by Covalent bonds and the Calcium is held together with Ionic bonds.
The base pairs are held together by hydrogen bonds.
Nitrogenous bases.That would be hydrogen bonds.