Explore understand the structure and function of nucleic acids to describe gene
expression and protein synthesis
DNA stands for deoxyribonucleic acid; it is a molecule that forms a double helix structure
and the two sugar phosphate backbones which are held together by hydrogen bonds twists
which form between the complementary base pairs. DNA is a molecule that contains the
genetic code that codes for proteins. The function of DNA is to store information that makes
proteins which help the organism grow and repair. The codes for this are contained in
structures called chromosomes. DNA is important because it contains information on what
we look like, how tall we are and how our kidneys function. +
https://www.khanacademy.org/test-prep/mcat/biomolecules/dna/a/dna-structure-and-
function
The base pairs include; adenine which forms a base pair with thymine and guanine which
bonds with cytosine. In RNA, Adenine is complementary to Uracil.
DNA is a polymer which is a large molecule, and nucleotides are monomers because many
monomers make a polymer which in this case is DNA. A nucleotide is a pentose sugar, a
nitrogenous base which is a complementary base pair and a phosphate group. These
nucleotides join in a condensation reaction, which involves bonding two molecules with the
removal of water to form the sugar backbone.
The bonds between nucleotides are hydrogen bonds and the bond between sugar and
phosphate are known as phosphodiester bonds. Adenine and Guanine both contain
structures that are double ringed and known as purine bases whereas Thymine, cytosine
and uracil all contain single ring and are known as pyrimidine bases.
, Nucleotides, DNA & RNA, Base Pairing | Edexcel International A Level Biology Revision Notes
2018
https://www.physicsandmathstutor.com/
DNA Structure and The Double Helix (A-level Biology) - Study Mind
DNA is present in eukaryotic cells, prokaryotic cells, and viruses. In a eukaryotic cell the
DNA is linear and is contained in a membrane bound organelle called the nucleus. It is
exceptionally long and is wound tight around proteins called histones which then form
chromosomes. In prokaryotic cells, the DNA is circular and free floating and is also found in
small loops of DNA known as plasmids. Depending on the type of virus, it either contains
DNA or RNA and is found in a protein coat.
expression and protein synthesis
DNA stands for deoxyribonucleic acid; it is a molecule that forms a double helix structure
and the two sugar phosphate backbones which are held together by hydrogen bonds twists
which form between the complementary base pairs. DNA is a molecule that contains the
genetic code that codes for proteins. The function of DNA is to store information that makes
proteins which help the organism grow and repair. The codes for this are contained in
structures called chromosomes. DNA is important because it contains information on what
we look like, how tall we are and how our kidneys function. +
https://www.khanacademy.org/test-prep/mcat/biomolecules/dna/a/dna-structure-and-
function
The base pairs include; adenine which forms a base pair with thymine and guanine which
bonds with cytosine. In RNA, Adenine is complementary to Uracil.
DNA is a polymer which is a large molecule, and nucleotides are monomers because many
monomers make a polymer which in this case is DNA. A nucleotide is a pentose sugar, a
nitrogenous base which is a complementary base pair and a phosphate group. These
nucleotides join in a condensation reaction, which involves bonding two molecules with the
removal of water to form the sugar backbone.
The bonds between nucleotides are hydrogen bonds and the bond between sugar and
phosphate are known as phosphodiester bonds. Adenine and Guanine both contain
structures that are double ringed and known as purine bases whereas Thymine, cytosine
and uracil all contain single ring and are known as pyrimidine bases.
, Nucleotides, DNA & RNA, Base Pairing | Edexcel International A Level Biology Revision Notes
2018
https://www.physicsandmathstutor.com/
DNA Structure and The Double Helix (A-level Biology) - Study Mind
DNA is present in eukaryotic cells, prokaryotic cells, and viruses. In a eukaryotic cell the
DNA is linear and is contained in a membrane bound organelle called the nucleus. It is
exceptionally long and is wound tight around proteins called histones which then form
chromosomes. In prokaryotic cells, the DNA is circular and free floating and is also found in
small loops of DNA known as plasmids. Depending on the type of virus, it either contains
DNA or RNA and is found in a protein coat.
