Study the schematic representation of the genes involved in the lac operon given below and answer the questions that follow:

If the nutrient medium for the bacteria contains only galactose, will operon be expressed? Justify your answer.

Study the schematic representation of the genes involved in the lac operon given below and answer the questions that follow : {:(p,i,p,o,z,y,a):} (a) Identify and name the regulatory gene in this operon. Explain its role in 'switching off' the operon. (b) Why is the lac operon's regulation referred to as negative regulation ? (c ) Name the inducer molecule and the products of the genes 'z' and 'y' of the operon. Write the functions of these gene products.

Study the diagram given below and answer the following questions.

Study the pie chart given below and answer the question that follow Which heads is allocated maximum funds?

Study the figure given below to answer the questions that follow. Count the number of triangles in the above figure.

Study the figure given below to answer the questions that follow. How many squares are there in this figure?