What does the term base pairing mean?

base pairing. noun. biochem the hydrogen bonding that occurs between complementary nitrogenous bases in the two polynucleotide chains of a DNA molecule.

What is the term for base pairing in DNA?

Complementary base pairing describes the manner in which the nitrogenous bases of the DNA molecules align with each other. Complementary base pairings are also responsible for the double-helix structure of DNA.

What is the term that means base pairing quizlet?

double helix. what is the term that means “base pairing”? complementary.

What are the 4 base pairs?

The four bases in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T). These bases form specific pairs (A with T, and G with C).

What is purine and pyrimidine bases?

They are nitrogenous bases that make up the two different nucleotides in DNA and RNA. Purines (adenine and guanine) are two-carbon nitrogen ring bases while pyrimidines (cytosine and thymine) are one-carbon nitrogen ring bases.

What is meant by the term base pairing How is base pairing involved in DNA replication notebook?

What is meant by the term base pairing? How is base pairing involved in DNA replication? Base pairing is the principle that hydrogen bonds form only between certain base pairs—A and T, and C and G. In DNA replication, base pairing ensures that the complementary strands produced are identical to the original strands.

What is meant by the term base pairing How does base pairing help in copying replicating DNA?

This means that each of the two strands in double-stranded DNA acts as a template to produce two new strands. Replication relies on complementary base pairing, that is the principle explained by Chargaff’s rules: adenine (A) always bonds with thymine (T) and cytosine (C) always bonds with guanine (G).

How do DNA bases pair up quizlet?

Nitrogen bases are held together by hydrogen bonds in between the two strands. Complementary base pairing rules mean that adenine always pairs with thymine, and cytosine always pairs with guanine.

What happens during base pairing?

Molecules called nucleotides, on opposite strands of the DNA double helix, that form chemical bonds with one another. These chemical bonds act like rungs in a ladder and help hold the two strands of DNA together.

What codon means?

Listen to pronunciation. (KOH-don) In DNA or RNA, a sequence of 3 consecutive nucleotides that codes for a specific amino acid or signals the termination of gene translation (stop or termination codon).

How does the telomerase work?

Telomerase, also called telomere terminal transferase, is an enzyme made of protein and RNA subunits that elongates chromosomes by adding TTAGGG sequences to the end of existing chromosomes. Telomerase is found in fetal tissues, adult germ cells, and also tumor cells.

How do you use base pair in A sentence?

The double helix unwinds and the nucleotides follow basically the same base pairing rules to form the correct sequence in the mRNA. The same base pairing rules that control the accuracy of DNA replication apply to the process of transcription.

What is the significance of base pairing to the function of DNA?

Function. Complementary base pairing is important in DNA as it allows the base pairs to be arranged in the most energetically favourable way; it is essential in forming the helical structure of DNA. It is also important in replication as it allows semiconservative replication.

How do you find base pairs?

What’s A nitrogen base?

Nitrogenous base: A molecule that contains nitrogen and has the chemical properties of a base. The nitrogenous bases in DNA are adenine (A), guanine (G), thymine (T), and cytosine (C). The nitrogenous bases in RNA are the same, with one exception: adenine (A), guanine (G), uracil (U), and cytosine (C).

What are some roles of nucleotides in the body?

Nucleotides have a central role in the physiology of organisms as building blocks of nucleic acids, storage of chemical energy, carriers of activated metabolites for biosynthesis, structural moieties of coenzymes, and metabolic regulators.

What is adenine science definition?

Listen to pronunciation. (A-deh-neen) A chemical compound that is used to make one of the building blocks of DNA and RNA. It is also a part of many substances in the body that give energy to cells.

What is A nitrogenous base pair?

base pair, in molecular biology, two complementary nitrogenous molecules that are connected by hydrogen bonds. Base pairs are found in double-stranded DNA and RNA, where the bonds between them connect the two strands, making the double-stranded structures possible.

Why nitrogenous bases are called bases?

The basic property derives from the lone electron pair on the nitrogen atom. The nitrogen bases are also called nucleobases because they play a major role as building blocks of the nucleic acids deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).

What is the DNA sugar?

The sugar in DNA is deoxyribose. The pyrimidines are cytosine (C) and thymine (T); the purines are guanine (G) and adenine (A).

What is the specific base pairing in DNA and RNA?

DNA and RNA bases are also held together by chemical bonds and have specific base pairing rules. In DNA/RNA base pairing, adenine (A) pairs with uracil (U), and cytosine (C) pairs with guanine (G).

What is the pairing arrangement of the nitrogenous bases pairs with and pairs with?

The nitrogen bases are ring compounds with their carbon and nitrogen atoms arranged in single or double rings. Only certain bases can pair together to form base pairs. In DNA, Adenine (A) always pairs with thymine (T), and guanine (G) always pairs with cytosine (C).