This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Biochemistry
[{'content': 'which is false regarding LAC OPERAN MODEL : \nSelect and explain. \nA. CAMP-CAP COMPLEX IS A POSTIVE REGULATOR, B. PROMOTER IS A TRANS ACTING FACTOR, C. Y gene = GALACTOSIDE PERMEASE, D. A gene= GALACTOSIDE ACETYLASE', 'role': 'user'}, {'content': 'Answer: B \nExplanation: promotor is a cis acting factor in lac model The lac operon * The lactose operon designated as lac operon. * The lac operon codes for enzymes involved in the catabolism (degradation) of lactose. * lactose is the disaccharide which is made up of glucose & galactose. * It is the inducible operon since the presence of lactose induce the operon to switched on. ref : vasudevan 9th ed', 'role': 'assistant'}]