#Question id: 2666
#XL - T Zoology
A cell does not want to waste energy synthesizing the amino acid arginine if arginine is present in its diet. Therefore, when arginine is present, it activates a repressor protein to prevent transcription of genes that code for enzyme to make arginine. This is an example of what type of regulation?
#Question id: 414
#XL - Q Biochemistry
The hydrolysis of phosphoenolpyruvate proceeds with a DG'° of about –62 kJ/mol. The greatest contributing factors to this reaction are the destabilization of the reactants by electostatic repulsion and stabilization of the product pyruvate by:
#Question id: 4609
#XL - T Zoology
Pseudogenes are ________.
#Question id: 3921
#XL - Q Biochemistry
Which observation is not evidence that supports the theory that mitochondria and chloroplasts originate from symbiotic bacteria?
#Question id: 3764
#XL - Q Biochemistry
What is the role of DNA ligase in the elongation of the lagging strand during DNA replication?