Answer: Enzyme
What type of biological molecule is a DNA helicase?

DNA is a long polymer made from repeating units called nucleotides each of which is usually symbolized by a single letter: either A T C or G. The structure of DNA is dynamic along its length being capable of coiling into tight loops and other shapes. In all species it is composed of two helical chains bound to each other by hydrogen bonds. Both chains are coiled around the same axis and have the same pitch of 34 angstroms (Å) (3.4 nanometres). The pair of chains have a radius of 10 angstroms (1.0 nanometre). Acc…

Fri Nov 02 2001 13:30:00 GMT-0500 (Eastern Standard Time) · Initially an enzyme known as a helicase acts on the molecule of DNA . DNA has an antiparallel double helix structure composed of two complementary polynucleotide strands held together by hydrogen bonds between the base pairs. The helicase disrupts the hydrogen bonds causing a region of DNA - corresponding to a gene - to unwind separating the two DNA …

CRISPR - Wikipedia

Homologous recombination is a type of genetic recombination in which genetic information is exchanged between two similar or identical molecules of double-stranded or single-stranded nucleic acids (usually DNA as in cellular organisms but may be also RNA in viruses). It is widely used by cells to accurately repairharmful breaks that occur on both strands of DNA known as double-strand breaks (DSB) in a process called homologous recombinational repair (HRR). Homologous recombination also produces new comb…

In molecular biology the term double helix refers to the structure formed by double-stranded molecules of nucleic acids such as DNA .The double helical structure of a nucleic acid complex arises as a consequence of its secondary structure and is a fundamental component in determining its tertiary structure.The term entered popular culture with the publication in 1968 of The Double Helix: A ...

Sat Sep 10 2005 14:30:00 GMT-0400 (Eastern Daylight Time) · As indicated the term "biologics" can be used to refer to a wide range of biological products in medicine. However in most cases the term "biologics" is...


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