" Injecting the microbes deliberately during immunisation or infectious organisms gaining access into body during natural infection induced."

X-bodies are formed during infection of

Consider the following four statements (A-D) and select the option which includes all the correct ones only? a) In immunisation, a preparation of antigenic protein is induced in the body. b) If a person is infected with deadly microbe we need to directly inject vaccine. c) Vaccine generate B & T memory cell. d) Snake anti venom is an example of active immunisation.

Name the infectious agent that causes tuberculosis in man. Which organ is commonly affected during tuberculosis ?

A body freely falls from a certain height onto the ground in a time 't'. During the first one third of the interval it gains a kinetic energy Delta K_(1) and during the last one third of the interval, it gains a kinetic energy Delta K_(2) . The ratio Delta K_(1) : Delta K_(2) is

Read the statement and choose the correct option (I) Secretion of interferons is a physiological barrier of innate immunity II. T-lymphocytes are responsible for cell mediated immunity III. Injection given against snake venom is a type of active immunisation IV. Antibodies produced during allergic reactions are of IgA type

The lac operon consists of a regulation gene and three structural gene. The lactose acts as inducer. In the presence of an Inducer such as lactose, the repressor is in inactivated during the interaction. This allows RNA polymerase access to the promoter and transcription proceeds. The repressor is synthesized which in turn binds with the operator region of the operon and prevents RNA polymerase from transcribing the operon. What provides binding site to RNA polymerase?

The lac operon consists of a regulation gene and three structural gene. The lactose acts as inducer. In the presence of an Inducer such as lactose, the repressor is in inactivated during the interaction. This allows RNA polymerase access to the promoter and transcription proceeds. The repressor is synthesized which in turn binds with the operator region of the operon and prevents RNA polymerase from transcribing the operon. Identify the correct sequence of the structural genes in the lac operon.

The lac operon consists of a regulation gene and three structural gene. The lactose acts as inducer. In the presence of an Inducer such as lactose, the repressor is in inactivated during the interaction. This allows RNA polymerase access to the promoter and transcription proceeds. The repressor is synthesized which in turn binds with the operator region of the operon and prevents RNA polymerase from transcribing the operon. The lac operon of E. coli contains genes involved in lactose metabolism. It's expressed only when lactose is _____ (1)and glucose is _____(2).