Join Us ::

Menu Home Classes GK Engineering Past Papers Current Affairs Technical GAT Subject Programming Medical Papers

GAT Subject :: All Aptitude Test ::

Home » GAT Subject » Aptitude Test - 113
Hassan
1.Resolving power of a microscope is a function of?
A. Wavelength of light used
B. Numerical aperture of lens system
C. Refractive index
D. Wavelength of light used
2.The greatest resolution in light microscopy can be obtained with?
A. Longest wavelength of visible light used
B. An objective with minimum numerical aperture
C. Shortest wavelength of visible light used
D. Longest wavelength of visible light used
3.Oil immersion objective lens has an NA value of?
A. 0.65
B. 0.85
C. 1.33
D. 0.65
4.In fluorescence microscopy, which of the following performs the function of removing all light except the blue light?
A. Exciter filter
B. Barrier filter
C. Dichroic mirror
D. Exciter filter
5.Total Magnification is obtained by ?
A. Magnifying power of the objective lens
B. Magnifying power of eyepiece
C. Magnifying power of condenser lens
D. Magnifying power of the objective lens
6.In light microscopy, which of the following is used as fixatives prior to staining technique?
A. Osmic acid
B. Glutaraldehyde
C. Heat
D. Osmic acid
7.In Phase contrast microscopy, the rate at which light enters through objects is ?
A. Constant
B. Inversely proportional to their refractive indices
C. Directly proportional to their refractive indices
D. Constant
8.Which part of the light microscope controls the intensity of light entering the viewing area?
A. Coarse adjustment screw
B. Fine adjustment screw
C. Diaphragm
D. Coarse adjustment screw
9.Which of the following is used in electron microscope?
A. electron beams
B. magnetic fields
C. light waves
D. electron beams
10.Electron Microscope can give a magnification up to?
A. 400,000X
B. 100,000X
C. 15000X
D. 400,000X
11.Degree of scattering in transmission electron microscope is a function of?
A. wavelength of electron beam used
B. number of atoms that lie in the electron path
C. number and mass of atoms that lie in the electron path
D. wavelength of electron beam used
12.Negative Staining is used for examining _?
A. virus particles
B. protein molecules
C. bacterial flagella
D. virus particles
13.Which among the following helps us in getting a three-dimensional picture of the specimen?
A. Transmission Electron Microscope
B. Scanning Electron Microscope
C. Compound Microscop
D. Transmission Electron Microscope
14.The secondary electrons radiated back in scanning microscope is collected by?
A. specimen
B. anode
C. vacuum chamber
D. specimen
15.On what factors do the intensity of secondary electrons depend upon?
A. shape of the irradiated object
B. chemical composition of the irradiated object
C. number of electrons ejected
D. shape of the irradiated object
16.Where do we obtain the magnified image of the specimen in SEM?
A. cathode ray tube
B. anode
C. scanning generator
D. cathode ray tube
17.Which of the following techniques are used in Transmission Electron Microscopy (TEM) for examining cellular structure?
A. Negative-Staining
B. Shadow Casting
C. Ultrathin Sectioning
D. Negative-Staining
18.The dye eosinate of methylene blue belongs to which group?
A. Acidic dye
B. Basic dye
C. Neutral dye
D. Acidic dye
19.What is the correct order of staining reagents in Gram-Staining?
A. Crystal violet, alcohol, iodine solution, safranin
B. Crystal violet, iodine solution, alcohol, safranin
C. Crystal violet, safranin, alcohol, iodine solution
D. Crystal violet, alcohol, iodine solution, safranin
20.Which bacteria appears purple-violet colour after staining?
A. Gram-positive
B. Gram-negative
C. Both Gram-positive and Gram-negative
D. Gram-positive
21.Gram-positive bacteria are usually more susceptible to?
A. streptomycin
B. streptomycin
C. streptomycin
D. streptomycin
22.Which of the staining technique helps in demonstrating spore structure in bacteria as well as free spores?
A. Acid-fast stain
B. Endospore stain
C. Capsule stain
D. Acid-fast stain
23.In Gram-staining, iodine is used as a?
A. fixative
B. mordant
C. solublizer
D. fixative
24.Which of the following is the example of Gram-negative bacteria?
A. Lactobacillus
B. Eschericia coli
C. Bacillus subtilis
D. Lactobacillus
25.Which of the following is incorrect about haplontic life cycle?
A. Gametophytes are the dominant phase in this life cycle
B. Sporophytes are free-living
C. Spores are haploid in nature and form gametophyte by mitotic division
D. Gametophytes are the dominant phase in this life cycle
26.Which among the following life cycle suits Chlamydomanas?
A. Haplontic
B. Diplontic
C. Triplontic
D. Haplontic
27.Which among the following is incorrect about diplontic life cycle?
A. Sporophyte is the dominant phase
B. All spermatophytes exhibit diplontic life cycle
C. Gametophyte depends on the sporophyte
D. Sporophyte is the dominant phase
28.Which among the following life cycle is exhibited by a rose plant?
A. Haplontic
B. Diplontic
C. Triplontic
D. Haplontic
29.Which among the following life cycle is exhibited by Fucus?
A. Diplontic
B. Haplontic
C. Triplolntic
D. Diplontic
30.Which among the following life cycle is exhibited by Polysiphonia?
A. Diplontic
B. Haplontic
C. Triplolntic
D. Diplontic
Related Subjects

Date to Date Current Affairs 2022

PakMCQs.net

Quick Links

GAT Subject



   Computer Science    English Mcqs    Agriculture    

Engineering



   Computer Science    Civil Engineering    

Technical



   Networking    Electronics    Database    

Past Papers



   Model Papers    FPSC Papers    
Our Team | Career | Contact | JoinUs | Privacy Policy | DMC

© 2020-2024 by Pak-MCQs.net All Rights Reserved.

Email: [email protected]