polycistronic mRNAa single mRNA molecule which codes for ☆more than one protein is reffered to as a polycistronic mRNA, and while most prokaryotic mRNA molecule are polycistronic, eukaryotic mRNA is rerely polycistronic geneticsbiologyUWorld Apr 30, 2020, 8:22 AM HirotoShishido
what allows cells to progress through the G1→S checkpointactivation of cyclin D,E and corresponding cyclin kinases (CDK4 and 6(inhibitor=palbociclib→ breast cancer))→
☆retinoblastoma protein is hyperphosphorylated(inactive)→
base sequence in promoter regionCAAT box (70-80 bases upstream from the transcription start site)
Hognegs(TATA) box (25 bases upstream)
promotor→ ☆initiate transcription by acting as binding sites for general transcription factors and RNA polymerase Ⅱ geneticsbiologyUWorld Mar 7, 2020, 5:27 AM HirotoShishido
primary site of ribosomal RNA transcription
enzymenucleolus
(round, dense, basophilic(dark) body)
the most abundant form of RNA in the human bodyribosomal RNA
(constituting about 80% of all RNAs) biochemistrybiology Dec 30, 2019, 5:05 AM HirotoShishido
the tallest tree in the worldRedwood,セコイアメスギ (in the north California) 110m
types of land plantsland plants
①nonvascular plants(mosses, 非維管束植物)
②vascular plants
A. seedless vascular plants(ferns)
B. seed plants
→→a. gymnosperms(裸子植物 700)
b. angiosperms(被子植物 250,000) botanybiology Oct 27, 2019, 10:20 AM HirotoShishido
