Which describes the correct pairing of DNA bases?
O
A. T with T, and C with C
B. T with G, and A with C
O
C. Twith C, and A with G
O
D. T with A, and C with G

D). T with A, and C with G

Explanation: DNA is a nucleic acid found in the nucleus of a cell. It contains all the genetic information of the cell. Nucleic acids are made up of three parts: the nitrogenous base, the ribose sugar and phosphate group. DNA contains deoxyribose sugar. The bases found in nucleic acids are of two types: the pyrimidine and purine bases. The pyrimidine bases are Cytosine, Thymine and Uracil. The purine bases are Adenine and Guanine. In DNA, only two pyrimidine bases can be found: Cytosine and Thymine. In DNA base pairing, Thymine (T) pairs with Adenine (A) while Cytosine (C) pairs with Guanine (G).

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.