作者:Josef Pentick-Weichert 1 年以前
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Phosphate group. C-5 on the sugar binds to oxygen on Phosphate.
Phosphodiester linkage
Nucleic acid backbone, comprised of phosphate and sugar
Nitrogenous bases, attached to C-1 on sugar molecule
Guanine, cytosine, adenine
Fourth base is thymine, specific to DNA
Hydrogen bonds are formed between complementary bases
Guanine binds with cytosine, adenine binds with uracil
One polynucleotide chain folds inwards on itself, bringing complementary bases on the same RNA strand close for hydrogen bonding.
Guanine binds with cytosine, adenine binds with thymine
Two separate DNA polynucleotide chains connect in antiparallel. Complementary bases on the two strands form hydrogen bonds.
Sequence of nitrogen bases code for the production of specific amino acids in the ribosomes.
Responsible for transcription of genetic information found in DNA and decoding of this information in the ribosomes.
Some viruses also use RNA as their primary unit for storing genetic information instead of DNA
Used for storing genetic information in most organisms
Found in the nucleus of cells in the form of chromosomes.
Fourth base is uracil, specific to RNA
Identical to ribose, with the oxygen atom from the hydroxyl group on C-2 absent.
Absence of a second -OH group makes DNA more stable, ideal for long-term preservation of genetic material
Amphipathic properties of phospholipids
Fatty acid carboxyl groups
Dehydration synthesis
Ester linkage
Polar phosphate group
Triglycerides are used for long-term energy storage in plants and animals
Very compact, dense animo acid
Closely packed, allowing for hydrogen bonding between collagen peptide chains
Lysine amino acid residue
Covalently bound
Light-sensitive molecule
Changes shape in response to light
Activation of other proteins in retinal rod cell
Informs the brain of the presence of light
Detect light
Simplest and smallest form of carbohydrate
Easy to break down for ATP production
Preferred source of energy for the body
Linked by 𝛂(1→4) glycosidic bonds.
Branches every 8-12 glucose units through an 𝛂(1→6) glycosidic bond.
Very large branched structures
Also contains carbonyl and hydroxyl functional groups, enabling the creation of hydrogen bonds
Plants make it as a form of energy storage.
Glycosidic bond between C1 on an 𝛂-glucose molecule and C4 on a 𝜷-fructose molecule.