Nitrogenous base: a molecule with the properties of a base, which also contains the element nitrogen.
Nucleic acid: a large molecule composed of repeating nucleotides ...
nitrogenous base
(nigh-tra-jen-us)
An organic base that contains the element nitrogen.
nocturnal ...
Nitrogenous base: A nitrogencontaining molecule having the chemical properties of a base.
Nucleic acid: A large molecule composed of nucleotide subunits.
Nitrogenous bases. The purines (adenine and guanine) and pyrimidines (thymine, cytosine, and uracil) that comprise DNA and RNA molecules.
- Nitrogenous base found in DNA and RNA
Adenosine Triphosphate (ATP)
- The energy molecule of cells, synthesized mainly in mitochondria and chloroplasts. Energy from its breakdown drives many important cellular reactions.
Uracil A nitrogenous base normally found in RNA but not DNA; uracil is capable of forming a base pair with adenine.
Vector See cloning vector.
Virus A noncellular biological entity that can reproduce only within a host cell.
Purine A nitrogenous base that includes a pyrimidine ring fused with a five-membered imidazole ring; the purine derivatives adenine and guanine are found in nucleotides and nucleic acids.
Adenine (A) A nitrogenous base, one member of the base pair AT (adenine-thymine).
See also: base pair, nucleotide ...
A pair of complementary nitrogenous bases in a DNA molecule--adenine-thymine and guanine-cytosine. Also, the unit of measurement for DNA sequences. Bioaugmentation.
base pair a pair of hydrogen-bonded nitrogenous bases (one purine and one pyrimidine) that join the component strands of the DNA double helix.
These nucleotides are composed of a nitrogenous base (A = adenine, T = thymine, C = cytosine, G = guanine) attached to a sugar called deoxyribose and the sugar is attached to a phosphate group which is negatively charged.
He found it contained four nitrogenous bases: cytosine, thymine, adenine, and guanine; deoxyribose sugar; and a phosphate group.
GC-content (or guanine-cytosine content), in molecular biology, is the percentage of nitrogenous bases on a DNA molecule which are either guanine or cytosine (from a possibility of four different ones, also including adenine and thymine).
A subunit of DNA or RNA consisting of a nitrogenous base (purine in adenine and guanine, pyrimidine in thymine, or cytosine for DNA and uracil cytosine for RNA), a phosphate molecule, and a sugar molecule (deoxyribose in DNA and ribose in RNA).
Nucleotides, shown in Figure 22, consist of a sugar, a nitrogenous base, and a phosphate. The sugars are either ribose or deoxyribose. They differ by the lack of one oxygen in deoxyribose. Both are pentoses usually in a ring form.
(Science: molecular biology) two nitrogenous bases (adenine and thymine or guanine and cytosine) held together by weak bonds.
two strands of dna are held together in the shape of a double helix by the bonds between base pairs.
Adenin is a purine base (nitrogenous base) and constituent of nulceotides and as such one member of the base pair A-T (adenine-thymine) in DNA and A-U (adenine-uracil) in RNA.
Thymine (T) ...
Subunit that polymerizes into nucleic acids (DNA or RNA). Each nucleotide consists of a nitrogenous base; a sugar; and one to three phosphate groups.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
Deoxyribonucleic Acid (DNA) the genetic code material‚ consisting of pairs of nitrogenous bases bonded to a "ladder" of phosphate and ribose molecules
(de = from‚ down‚ out; deoxy = without oxygen) ...
DNA is composed of units called nucleotides. Each nucleotide contains a phosphate group, a deoxyribose sugar, and a nitrogenous base.
A nitrogen-containing, single-ring, basic compound (cf. nitrogenous base) that occurs in nucleic acids. The pyrimidines in DNA are cytosine and thymine. The pyrimidines in RNA are cytosine and uracil.
point mutations A change in the structure of a gene that usually arises from the addition, deletion, or substitution of one or more nitrogenous bases.
 See also: DNA, Nucleotide, Molecule, Base, RNA
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