Before ARF transcription factors can trigger auxin-induced gene expression, what must happen?
A. Auxin binds to ubiquitin, a degradation tag.
B. Auxin degrades Aux/IAA proteins which repress ARF transcription factors.
C. Auxin binds to TIR1, an auxin receptor.
D. Auxin must bind to the ARF transcription factor.
E. Ubiquitin must destroy TIR1 to release Aux/IAA proteins.
C. Auxin binds to TIR1, an auxin receptor.
You might also like to view...
_________ bind to the active site of an enzyme
A. Substrates B. Competitive inhibitors C. Noncompetitive inhibitors D. Any carbohydrate E. Substrates and competitive inhibitors
Answer the following statements true (T) or false (F)
1. Phylogenetic analyses of some vertebrate mineralcorticoid and glucocorticoid receptors and their ligands has suggested that the hormones evolved prior to their receptors. 2. Vasotocin is present in non-mammalian vertebrates and shares structural and functional properties with mammalian antidiuretic hormone and oxytocin. Through these similarities it has been suggested that vasotocin could be the ancestral precursor to the posterior pituitary hormone in vertebrates. 3. Vitamin D is a hormone produced in part by exposure to sunlight. 4.
Which of the following processes is under voluntary control?
a. filtration b. reabsorption c. urination d. secretion e. excretion
A hydrolysis reaction involves the loss of water.
Answer the following statement true (T) or false (F)