What are the 3 main components of DNA?
DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.
What are the components of the DNA molecule?
DNA is composed of two chains of repeating nucleotides. Each nucleotide consists of three components. These components are: Phosphate Group….
- cytosine.
- adenine.
- guanine.
- thymine.
What are the three components of a DNA nucleotide quizlet?
nucleotide –> composed of three parts: nitrogenous base, five-carbon sugar (pentose), and phosphate group.
What are the 3 parts of a nucleotide How are they attached to one another?
The three parts of a nucleotide are connected via covalent bonds.
- The nitrogenous bases bonds to the first or primary carbon atom of the sugar.
- The number 5 carbon of the sugar bonds to the phosphate group.
- The purines and pyrimidines form bonds with one another.
What are the three distinct components of a nucleotide in which chapter?
A nucleotide has three chemically distinct components – a heterocyclic compound, a monosaccharide and phosphoric acid or phosphate.
Which component of DNA determines the traits of an organism?
Gene
Gene. A segment of a DNA molecule (a sequence of bases) that codes for a particular protein and determines the traits (phenotype) of the individual. A gene is the basic unit of heredity in a living organism.
Which component of DNA contains the genetic code?
The Genetic Code is stored on one of the two strands of a DNA molecules as a linear, non-overlapping sequence of the nitrogenous bases Adenine (A), Guanine (G), Cytosine (C) and Thymine (T). These are the “alphabet” of letters that are used to write the “code words”.
Which of the following is not a component of DNA?
Answer and Explanation: DNA does not contain β -D-ribose. DNA does contain a deoxyribose sugar.
Which three organelles found in a plant cell contain DNA?
The three organelles that contain DNA are the nucleus, mitochondria and chloroplasts. Organelles are those subunits in the cell which are membrane bound performing specific functions. Thus, in a way, they are analogous to body organs. The Nucleus is the control center of the cell housing the genetic information.
What are the 3 nitrogen bases of TRNA?
Three of these bases, adenine (A), cytosine (C), and guanine (G), are the same as DNA. But instead of thymine (T), the fourth base is uracil (U).
What are the four DNA bases?
These chemical bonds act like rungs in a ladder and help hold the two strands of DNA together. There are four nucleotides, or bases, in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T). These bases form specific pairs (A with T, and G with C).
What is not a component of DNA nucleotides?
Answer and Explanation: The correct answer is b. deoxyglucose. Deoxyglucose is not a component of nucleotides, the building blocks of DNA.
Is amino acid a component of DNA?
1 Answer. False. The building blocks of DNA molecules are nucleotides. Amino acids are the building blocks of proteins.
What component of the cell contains DNA?
Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA). Mitochondria are structures within cells that convert the energy from food into a form that cells can use.
What contains most of the DNA?
The nucleus
The nucleus contains most of the DNA in a cell and this DNA is called the chromosomal DNA. It is separated from the rest of the cell (cytoplasm) by a double layer of membrane.
What is the composition of a DNA fragment?
DNA fragments are composed of molecules called nucleotides. Each nucleotide is made up of a sugar group, a phosphate group, and a nitrogen base.
What are the 3 major components of DNA?
A Five Carbon Ring:
What are the three major ingredients a DNA molecule?
Adenine
Which of these are components of DNA?
What Are the Components of DNA? DNA is a long molecule composed of two chains of smaller molecules called nucleotides, each which contain a region of nitrogen called the nitrogenous base, a carbon-based sugar molecule called deoxyribose and a region of phosphorus called the phosphate group.
Which three parts make up the DNA molecule?
– Ribose, a sugar – A phosphate group (a phosphorous atom surrounded by oxygen atoms) – Nitrogenous bases: Adenine, guanine, thymine, and cytosine (often abbreviated as A, G, T, C)