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Hace 5 días · A protein is a polyamide. Secondary structure: regularly repeating local structures stabilized by hydrogen bonds. The most common examples are the α-helix, β-sheet and turns. Because secondary structures are local, many regions of different secondary structure can be present in the same protein molecule.
Hace 2 días · Turkey, officially the Republic of Türkiye, is a country mainly in Anatolia in West Asia, with a smaller part called East Thrace in Southeast Europe.It borders the Black Sea to the north; Georgia, Armenia, Azerbaijan, and Iran to the east; Iraq, Syria, and the Mediterranean Sea (and Cyprus) to the south; and the Aegean Sea, Greece, and Bulgaria to the west.
Hace 2 días · The wolf ( Canis lupus; [b] pl.: wolves ), also known as the gray wolf or grey wolf, is a large canine native to Eurasia and North America. More than thirty subspecies of Canis lupus have been recognized, including the dog and dingo, though gray wolves, as popularly understood, only comprise naturally-occurring wild subspecies.
Hace 2 días · Music is the arrangement of sound for expressive purposes, often characterised as encompassing aspects of form, harmony, melody, and rhythm. [1] [2] [3] Music is generally agreed to be a cultural universal that is present in all human societies. [4] Definitions of music vary widely in substance and approach. [5]
Hace 3 días · Music Box is the third studio album by American singer-songwriter Mariah Carey. It was released by Columbia Records on August 31, 1993. The album comprises ballads primarily written by Carey and Walter Afanasieff, with whom she had previously worked on Emotions (1991), and a few urban dance tracks. During the course of the album's development ...
Hace 2 días · Marie Bouzková ( Czech pronunciation: [ˈmarɪjɛ ˈbou̯skovaː], born 21 July 1998) is a Czech professional tennis player. [1] She reached a career-high WTA singles ranking of No. 24 on 12 December 2022 and a doubles ranking of world No. 15 on 6 May 2024. She has won one singles title (at the 2022 Prague Open) and five doubles titles on the ...
