What might be the reason why the bromobenzene substrate is added to the reaction flask in two portions rather than all at once?

Which codon is the code for the amino acid histidine (his)?

Where would you expect to see seedless plants, such as ferns and mosses? a. in a botanical museum, because they are all extinct b. low and close to the ground in a moist environment c. climbing high while circling the branches of another plant d. deeply rooted in a forest with a trunk that reaches 20 meters or more

Classify the structures as homologous or analogous, depending on their structure and function.