Answer:
d. RNA polymerase II.
Explanation:
The main enzyme responsible for RNA synthesis is RNA polymerase, which <em>catalyzes the polymerization of 5'-triphosphate ribonucleosides (NTP) </em>directed by a DNA mold.
Eukaryotic cells contain <u>three types of nuclear RNA polymerases</u> that transcribe different types of genes. Protein-encoding genes are transcribed by RNA polymerase II to give mRNA.
Answer : states of mmmatter... This is because elements at the right are majorly non metal and are liquid or gas at room temperature while those at the left are metal and mostly solid at room temperature
Explanation:
Almost all eukaryotic proteins are subject to post-translational modifications during mitosis and cell cycle, and in particular, reversible phosphorylation being a key event. The recent use of high-throughput experimental analyses has revealed that more than 70% of all eukaryotic proteins are regulated by phosphorylation; however, the mechanism of dephosphorylation, counteracting phosphorylation, is relatively unknown. Recent discoveries have shown that many of the protein phosphatases are involved in the temporal and spatial control of mitotic events, such as mitotic entry, mitotic spindle assembly, chromosome architecture changes and cohesion, and mitotic exit. This implies that certain phosphatases are tightly regulated for timely dephosphorylation of key mitotic phosphoproteins and are essential for the control of various mitotic processes. This review describes the physiological and pathological roles of mitotic phosphatases, as well as the versatile role of various protein phosphatases in several mitotic events.
Answer:
A. Repeats of "Alanine-Arginine"
B. Repeats of "Tyrosine-Isoleucine"
C. Repeats of Aspartic acid
Explanation:
A. The synthetic RNA with GC repeats would have repeats to two codons: GCG and CGC which in turn code for alanine and arginine amino acids respectively. Hence, its polypeptide would have repeats of "Alanine-Arginine"
RNA: GCG CGC GCG CGC GCG CGC
Alanine-Arginine-Alanine-Arginine-Alanine-Arginine-Alanine-Arginine
...
B. The synthetic RNA with UA repeats would have repeats to two codons: UAU and AUA which in turn code for tyrosine and Isoleucine amino acids respectively. Hence, its polypeptide would have repeats of "Tyrosine-Isoleucine"
RNA: UAU AUA UAU AUA UAU AUA
Tyrosine-Isoleucine-Tyrosine-Isoleucine-Tyrosine-Isoleucine-Tyrosine-Isoleucine
C. The synthetic RNA with GAC repeats would code for polypeptide of aspartic acid only as GAC codes for aspartic acid.
RNA: GAC GAC GAC GAC GAC GAC
Aspartic acid-Aspartic acid-Aspartic acid-Aspartic acid-Aspartic acid-Aspartic acid
Examples:
Respiratory System, (I think) Organ System, Circulatory System, Nervous System, etc.
