MCQ BIOLOGY (APPLIED BIOLOGY)

 

1. Schiff’s reagent is specific for

a) cytoplasm                b) DNA           c) pectin          d) suberin

 

2. A technique used to study substances present inside cells, their extracts and emissions is

a) chromatography                  b) electrophoresis

c) specific stains                      d) microspectrophotometry

 

3. Which of the following techniques, other than microscopy is used for the study of composition of cell ?

a) plasmolysis              b) chromatography      c) maceration               d) autoradiography

 

4. The method most to determine the molecular weight of protein is

a) X-ray diffraction                 b) ultracentrifuation               

c) classical chemistry               d) both a and b

 

5. Plant cell can be transferred by

a) electroporation        b) electrophoresis        c) electroduction         d) electrolysis

 

6. Alternative name of ultra microscope

a) Dark field microscope         b) Zsigmondy microscope

c) Light microscope                d) SEM

 

7. The paper used in parer chromato graphy

a) what man                b) Nitrocellulose paper            c) Agrose paper           d) None of these

 

8. Which is correct in case of centrifugation

a) Cell = microscope + pellete b) Cell = pellete + supernatant

c) Cell = microscope + supernatant     d) Cell = pellete + supernatant + microscope

 

9. Isopyknic value is synonymous to

a) Svedberg value                   b) Equal density centrifugation value

c) Refraction coefficient         d) More than one option is correct

 

10. Azure B stain is used to locate

a) DNA           b) RNA           c) Antigen       d) Cholesterol

 

11. Full form of SDS PAGE

a) Sodium dodicyl Sulphate Poly Acrylamide gel electrophoresis

b) Sodium dodicyl Sulphate Polymer Adding gel electrophoresis

c) Suphur dodicy Sodium Polymer Adding gel electrophoresis

d) Sulphur drug Sterilization by Polymer Adding gel electrophoresis

 

12. Which of the following technique need tracer ?

a) Microtome               b) Autoradiography                c) TEM            d) SEM

 

13. Which is the correct ?

Stain                            used for staining                     Final Colour

Eosin                           Cytoplasm                               Blue

Sudan black                Protein                                     Black

Feulgen’s stain            Nuclei                                      Blue

Basic Fuschin              Nucleus                                   Magenta Red

 

14. Which of the following microscope gives 3D images ?

a) electron microscope                                    b) compound microscope

c) fluorescent microscope                               d) scanning electron microscope

 

15. Cell fraction technique is used for

a) separation of liquids                                    b) analysis of cell component

c) separation of cellular component                d) all of these

 

16. Dark field microscope was invented by

a) Merten                     b) Zernicke                  c) Zsigmondy              d) Max Haitinger

 

17. Which of the following microscope has a very high wavelength ?

a) ultra-violet microscope                                b) polaring microscope

c) fluorescent microscope                               d) phase contrast microscope

 

18. A student wishes to study the cell structure a light microscope having 10X eyepiece and 45X objective lens. He should illuminate the object by which of the following colour of light, so as to get the best possible resolution ?

a) yellow                     b) green                       c) blue                         d) red

 

19. Which of the following technique is used to separate proteins based on the differences in their mass ?

a) dialysis                    b) electrophoresis        c) western blotting      d) southern blotting

 

20. The crystal of lead zirconate is a key component of

a) sonography                                                  b) electrocardiography

c) electroencephalography                              d) magnetoencephalography

 

21. Resolving power of a light microscope is

a) 0.2 micrometer        b) 0.4 micrometer        c) 1 angstrom              d) 10 angstrom

 

22. An illusion of depth of the object can be made by

a) phase contrast microscope                          b) dark field

c) scanning electron microscope                     d) compound microscope

 

23. In electron microscope which property of e^- is used ?

a) due to short wavelength                             b) e^- move around nucleus

c) wave nature followed by it                         d) it has negative charge

 

24. Which lenses in electron microscope are used to control and focus a beam of electron ?

a) convex lens             b) concave lens            c) electric lens             d) magnetic lens

 

25. Resolving power of scanning electron microscope is

a) 5 – 20 nm                b) .01 nm                     c) .1 nm                       d) .0001