#PBL Definiendo conceptos. Investigación sobre inventos, innovaciones, descubrimientos. Y sobre ciencia, tecnología y técnica.
Transcription, a highly regulated phase in gene expression, produces primary transcripts. However, transcription is only the first step which should be followed by many modifications that yield functional forms of RNAs. Otherwise stated, the newly synthesized primary transcripts are modified in several ways to be converted to their mature, functional forms to produce different proteins and RNAs such as mRNA, tRNA, and rRNA.
8 sencillos trucos para mejorar tus búsquedas en Google
Puedes mejorar tus búsquedas en Google, consiguiendo ahorrar tiempo y resultados más precisos, siguiendo los ocho trucos que ofrece esta infografía.
MATERIALES PLÁSTICOS-TECNOLOGÍA 3º ESO
MATERIALES PLÁSTICOS-TECNOLOGÍA 3º ESO | EL BLOG DE INMA LÓPEZ PORCEL
4 Maneras de como la Tecnología está Cambiando el Aprendizaje
Transcription is the first step of gene expression, in which a particular segment of DNA is copied into RNA by the enzyme RNA polymerase. Both RNA and DNA are nucleic acids, which use base pairs of nucleotides as a complementary language. The two can be converted back and forth from DNA to RNA by the action of the correct enzymes. During transcription, a DNA sequence is read by an RNA polymerase, which produces a complementary, antiparallel RNA strand called a primary transcript.
As the chemistry of chocolate is a topic that’s been pretty much exhausted on the site (see here, here, here, here, and here), for the Easter weekend we’re instead homing in on the R…
RNA sugar-phosphate backbone forms with assistance from RNA polymerase to form an RNA strand. Hydrogen bonds of the untwisted RNA-DNA helix break, freeing the newly synthesized RNA strand. If the cell has a nucleus, the RNA may be further processed. This may include polyadenylation, capping, and splicing. The RNA may remain in the nucleus or exit to the cytoplasm through the nuclear pore complex.
DNA. The two DNA strands are known as polynucleotides since they are composed of simpler units called nucleotides. Each nucleotide is composed of a nitrogen-containing nucleobase—either guanine (G), adenine (A), thymine (T), or cytosine (C)—as well as a monosaccharide sugar called deoxyribose and a phosphate group.