Gene Control

What hormone encourages the plant to expend more energy in root growth?

This hormone speeds up maturation of the plant and producing significantly more growth when it is in abundance.

• cytokinin

• ethylene

• gibberellin

• abcisic acid

Which protein is normally bound to the promoter PIF, blocking transcription of amylase?

• DELLA

• MARIELLA

• BELLA

• TESSA

What effect does Gibberilin have on DELLA

• Promotes it

• Enhanced it

• Causes it's degradation

• Transcripts it

What happens when DELLA is degraded?

• It releases PIF. PIF binds to the DNA, promoting RNA polymerase to bind to the amylase gene

• It blocks RNA synthesis of amylase

• Nothing

Tags

NGSS.HS-LS1-1

PIF is an example of what?

• Repressor

• Promoter

• mRNA

• DNA

Beta-Galactosidase enzyme from the lac operon is an example of what?

• A repressible enzyme

• An inducible enzyme

• A promoter

• A repressor