Examlex
is a disease in which the lung's air spaces are abnormally diluted and the lungs walls are distended.
Hydrogen Bonds
Weak bonds formed between a hydrogen atom and a more electronegative atom, important in the structure of DNA and proteins.
Adenine
A nucleotide base present in DNA and RNA, pairing with thymine in DNA and uracil in RNA, and is one of the four nucleotide bases.
Thymine
A pyrimidine base found in DNA, pairing with adenine (A) through two hydrogen bonds to assist in stabilizing the nucleic acid structures.
Centromere
The specialized DNA sequence of a chromosome that links a pair of sister chromatids and where spindle fibers attach during cell division.
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