Chapter 11 - More Test Questions

Biology 240 with Hughes at University of Tennessee - Knoxville

About this deck

By: Terry Nowell
Textbook:

An Introduction to Genetic Analysis (INTRODUCTION TO GENETIC ANALYSIS (GRIFFITHS))

Introduction to Genetic Analysis

Introduction to Genetic Analysis & Mega Solutions Manual

Introduction to Genetic Analysis (Introduction to Genetic Analysis (Griffiths))
Created: 2011-11-09
Size: 11 flashcards
Views: 30

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The lac I gene produces the protein -

Lac Repressor

The lac y gene -

produces a membrane protein which transports lactose into the cell

The lac repressor have two active (binding) sites. They are;

a binding site for allolactose and a binding site for operator DNA

A mutation occurs in the P gene such that it cannot bind RNA polymerase. What is the consequence of this mutation? Transcription will be ________

repressed (off)

Both the lac and trp operons -

are under negative control

If glucose is available to an E. coli cell, what will happen?

cAMP will not be made

If both glucose and lactose are available to an E. coli cell, will the lac operon be transcribed?

Yes, but at very low levels.

The function of the trp operon is

to synthesize tryptophan

In order to bind to the trp operator, trp repressor must be __

bound to tryptophan

In Trp operon attenuation, high levels of tryptophan cause -

formation of an intrinsic terminator which prevents trp operon transcription.