Select the two correct statements out of the | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) The lac operon model was proposed by Francois Jacob and Jacques Monod in $E. coli$.Statement $(i)$ is incorrect because lactose (the inducer),not

Vedclass · Accepted Answer

$(ii) 	ext{ and } (iii)$

Vedclass · Answer

(C) The lac operon model was proposed by Francois Jacob and Jacques Monod in $E. coli$.Statement $(i)$ is incorrect because lactose (the inducer),not glucose or galactose,binds to the repressor to inactivate it.Statement $(ii)$ is correct. In the absence of the inducer (lactose),the repressor protein binds to the operator region,preventing transcription.Statement $(iii)$ is incorrect. The $z$-gene codes for $\beta$-galactosidase,while the $y$-gene codes for permease.Statement $(iv)$ is correct. The operon concept was indeed elucidated by Jacob and Monod.Therefore,statements $(ii)$ and $(iv)$ are correct.

Similar Questions

Two numbers are chosen at random from $\{1, 2, 3, 4, 5, 6, 7, 8\}$ at a time. The probability that the smaller of the two numbers is less than $4$ is

An inductance of $1 \ H$ is connected in series with an $AC$ source of $220 \ V$ and $50 \ Hz$. The inductive reactance (in ohm) is (in $pi$)

Let $a, b, x, y$ be real numbers such that $a^2+b^2=81$,$x^2+y^2=121$ and $ax+by=99$. Then,the set of all possible values of $ay-bx$ is

The sum of the coefficients in the expansion of $(1+x+x^2)^n$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module