#Question id: 15730
#SCPH01 Biochemistry
#Question id: 5064
#SCPH01 Biochemistry
Fibroblast growth factors, epidermal growth factors, platelet-derived growth factors, and stem cell factor are all paracrine factors that bind to
#Question id: 4941
#SCPH06 I Botany
Which of the factors below weaken the hypothesis of abiotic synthesis of organic monomers in early Earthʹs atmosphere?
1. the relatively short time between intense meteor bombardment and appearance of the first life forms
2. the lack of experimental evidence that organic monomers can form by abiotic synthesis
3. Uncertainty about which gases comprised early Earthʹs atmosphere
#Question id: 18713
#SCPH01 Biochemistry
#Question id: 3873
#SCPH01 Biochemistry
The excision (splicing) of many group I introns requires, in addition to the primary transcript RNA: