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- Dictionaryhelix/ˈhiːlɪks/
noun
- 1. an object having a three-dimensional shape like that of a wire wound uniformly in a single layer around a cylinder or cone, as in a corkscrew or spiral staircase.
- 2. the rim of the external ear.
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Jul 16, 2024 · DNA, organic chemical of complex molecular structure found in all prokaryotic and eukaryotic cells. It codes genetic information for the transmission of inherited traits. The structure of DNA was described in 1953, leading to further understanding of DNA replication and hereditary control of cellular activities.
Jul 24, 2024 · Deoxyribonucleic acid ( / diːˈɒksɪˌraɪboʊnjuːˌkliːɪk, - ˌkleɪ -/ ⓘ; [1] DNA) is a polymer composed of two polynucleotide chains that coil around each other to form a double helix. The polymer carries genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses.
Jul 23, 2024 · Definition. Double helix, as related to genomics, is a term used to describe the physical structure of DNA. A DNA molecule is made up of two linked strands that wind around each other to resemble a twisted ladder in a helix-like shape.
Jul 8, 2024 · nucleic acid, naturally occurring chemical compound that serves as the main information-carrying molecule of the cell and that directs the process of protein synthesis, thereby determining the inherited characteristics of every living thing.
Jul 7, 2024 · Protein - Alpha Helix, Beta Sheet, Coil: The nitrogen and carbon atoms of a peptide chain cannot lie on a straight line, because of the magnitude of the bond angles between adjacent atoms of the chain; the bond angle is about 110°.
Jul 24, 2024 · Each region of the DNA helix that produces a functional RNA molecule constitutes a gene. We define a gene as a DNA sequence that is transcribed. This definition includes genes that do not encode proteins (not all transcripts are messenger RNA).
Jul 23, 2024 · A helicase is an enzyme that plays a crucial role in the DNA replication and repair processes. Its primary function is to unwind the double-stranded DNA molecule by breaking the hydrogen bonds between the complementary base pairs, allowing the DNA strands to separate.
5 days ago · Of these polygonal helices, the aperiodic tetrahelix analogue that can be geometrically defined from the same face-sharing tetrahedral motif by slightly twisting this rotation angle is sought ...
Jul 22, 2024 · Transcription, as related to genomics, is the process of making an RNA copy of a gene’s DNA sequence. This copy, called messenger RNA (mRNA), carries the gene’s protein information encoded in DNA.
6 days ago · What is a helix? A helix is a type of smooth space curve, like a corkscrew or spiral staircase, with a constant radius and pitch. How does the helix length differ from the circumference? The helix length accounts for both the circular path and the vertical rise, making it longer than the simple circumference of the base circle.
