Home
Class 12
BIOLOGY
In agar plate medium having bacteriophag...

In agar plate medium having bacteriophages and bacteria, there are clear transparent areas around the growth of bacteria. These areas are called

A

holes

B

transparencies

C

plaques

D

hot spots

Text Solution

Verified by Experts

The correct Answer is:
C

Plaques are clear areas on agar plate (medium) having bacteriophages and bacteria.
Promotional Banner

Topper's Solved these Questions

  • BIODIVERSITT AND CONSERVATION

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE QUESTIONS|112 Videos
  • BIOTECHNOLOGY : PRINCIPLES AND PROCESSES

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE QUESTIONS|134 Videos

Similar Questions

Explore conceptually related problems

Bacteriophages are viruses that eat away bacteria. They usually have

A parallel plate capacitor of area 60 cm^2 and separation 3 mm is charged initially, to 90 muC . If the medium between the plate gets slightly conducting and the plate loses the charge initially at the rate of 2.5 xx 10^-8 C//s , the magnetic field between the plates is

The plates of a parallel plate capacitor have an area of 90 cm^2 each and are separated by 2.5 mm. The capacitor is charged by connecting it to a 400 V supply. (a) How much electrostatic energy is stored by the capacitor? (b) View this energy as stored in the electrostatic field between the plates, and obtain the energy per unit volume u. Hence arrive at a relation between u and the magnitude of electric field E between the plates.

The resistance offered by a wire of unit length and unit cross-sectional area is called resistivity. For a material irrespective of length and area, the resistivity is constant. It is also called specific resistance of the material. Metals and alloys have low resistivity while insulators have high resistivity. Resistivity of two elements A and B are 1.62 xx 10^(-8) Omega m and 520 xx10^(-8) Omega m respectively. Out of these two, name the element that can be used to make : (i) filament of electric bulb. (ii) wires for electrical transmission lines.

Select the correct combination of the statements (i-iv) regarding the characteristics of certain organisms. (i) Methanogens are archaebacteria which produce methane in marshy areas (ii) Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen (iii) Chemosnthetic autotrophic bacteria synthesise cellulose from glucose (iv) Mycoplasma lack a cell wall and can survive without oxygen The correct statements are

The plates of a parallel plate capacitor have an area of 100 cm^(2) each and are separated by 3mm. The capacitor is charged by connecting it to a 400 V supply. (a) Calculate the electrostatic energy stored in the capacitor. (b) If a dielectric of dielectric constant 2.5 is introduced between the plates of the capacitor then find the electrostatic energy stored and also change in the energy stored.

The plates of a parallel plate capacitor have an area of 100 cm^(2) each and are separated by 3 mm . The capacitor is charged by connecting it to a 400 V supply . Calculate the electrostatic energy stored in the capacitor .