MCQOPTIONS
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MCQOPTIONS
This section includes 29 Mcqs, each offering curated multiple-choice questions to sharpen your Biology Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Resolution power of a compound microscope is |
| A. | 2.0 ?m |
| B. | 2-4 A |
| C. | 24 ?m |
| D. | 24 A |
| Answer» B. 2-4 A | |
| 2. |
Magnifying power of electron microscope as compared to eye is |
| A. | 500 X |
| B. | 250000X |
| C. | 500000X |
| D. | 250X |
| Answer» C. 500000X | |
| 3. |
In cell fractionation various components of cells including its organelles can be isolated in different layers depending upon: |
| A. | Their physical properties like size & weight. |
| B. | Physical properties of the medium like its density. |
| C. | Their electrical properties like their charges |
| D. | Both a and b |
| Answer» E. | |
| 4. |
Percentage of proteins in cell membrane is |
| A. | 20-40% |
| B. | 40-50% |
| C. | 60-80% |
| D. | 80-100% |
| Answer» D. 80-100% | |
| 5. |
Movement of the material across the cell membrane which does not requiring expenditure of metabolic energy is called |
| A. | Active transport |
| B. | Passive transport |
| C. | Co-transport |
| D. | Counter transport |
| Answer» C. Co-transport | |
| 6. |
The first layer of cell wall which is formed is: |
| A. | Primary wall |
| B. | Secondary wall |
| C. | Middle lamella |
| D. | All of these |
| Answer» B. Secondary wall | |
| 7. |
Cellulose is the major component of |
| A. | Primary wall |
| B. | Secondary wall |
| C. | Middle lamella |
| D. | All of the above |
| Answer» B. Secondary wall | |
| 8. |
Strengthening material of prokaryotic cell wall is |
| A. | Cellulose |
| B. | Chitin |
| C. | Inorganic salts silica waxes and ligin |
| D. | Peptidoglycan or Murein. |
| Answer» E. | |
| 9. |
Spherical or tubular membranes which separate the material present in endoplasmic reticulum from that of cytoplasmic material are called |
| A. | Cytosol |
| B. | Cisternae |
| C. | Polysomes |
| D. | Cristae |
| Answer» C. Polysomes | |
| 10. |
Chlorophyll is a/an _____ molecule |
| A. | Inorganic |
| B. | Cationic |
| C. | Anionic |
| D. | Organic |
| Answer» E. | |
| 11. |
The part of chloroplast where CO2 is fixed to manufacture sugar is |
| A. | Stroma |
| B. | Grana |
| C. | Thylakoid |
| D. | Outer membrane |
| Answer» B. Grana | |
| 12. |
The type of plastids which help in pollination is |
| A. | Chromoplasts |
| B. | Leucoplasts |
| C. | Chloroplasts |
| D. | All of these |
| Answer» B. Leucoplasts | |
| 13. |
Ribosomes are assembled in |
| A. | Nucleolus |
| B. | Nucleus |
| C. | DNA |
| D. | RNA |
| Answer» B. Nucleus | |
| 14. |
The place of centromere where spindle fibres get attached is |
| A. | Kinetochore |
| B. | Kinochore |
| C. | Centromere region |
| D. | All of these |
| Answer» B. Kinochore | |
| 15. |
The stent energy in the form of ADP is regenerated by mitochondria into: |
| A. | AMP |
| B. | ADP |
| C. | ATP |
| D. | All of these |
| Answer» D. All of these | |
| 16. |
Chlorophyll molecule contrains ________ as central metal ion. |
| A. | Fe2+ |
| B. | Mg2+ |
| C. | Zn2+ |
| D. | Cu2+ |
| Answer» C. Zn2+ | |
| 17. |
A group of ribosomes attached to mRNA is known as |
| A. | Polymer |
| B. | Polypeptide |
| C. | Polysomes |
| D. | Monomer |
| Answer» D. Monomer | |
| 18. |
Pancreas produces secretory granules that help in digestion. These granules after passing through endoplasmic reticulum are pinched off from ______ surface of Golgi apparatus: |
| A. | Forming face |
| B. | Maturating face |
| C. | Any of them |
| D. | None of these |
| Answer» C. Any of them | |
| 19. |
During digesting the phagocytosed food particles vesicles formed from fusion of phagocytic vacuole with the enzymes secreted by Golgi apparantus are called |
| A. | Lysosomes |
| B. | Primary lysosomes |
| C. | Secondary lysosomes |
| D. | Food vacuole |
| Answer» D. Food vacuole | |
| 20. |
Autophagosomes are |
| A. | Those lysosomes which eat parts of their own cells to generate energy. |
| B. | Those lysosomes which eat old and worn out cellular organelles. |
| C. | Lysosomes which help in extracellular digestion |
| D. | Both a and b |
| Answer» E. | |
| 21. |
Cellular organelles related with H2O2 are |
| A. | Glyoxisomes |
| B. | Lysosomes |
| C. | Peroxisomes |
| D. | Ribosomes |
| Answer» D. Ribosomes | |
| 22. |
The human naked eye can differentiate between two points which are _______ apart. |
| A. | 1.0 mm |
| B. | 0.1 mm |
| C. | 1.0 cm |
| D. | 1.0 dm |
| Answer» B. 0.1 mm | |
| 23. |
Ribonucleo-protein particles are the name of |
| A. | DNA |
| B. | Nucleus |
| C. | Eukaryotic ribosomes |
| D. | RNA |
| Answer» D. RNA | |
| 24. |
Ribosomes + m-RNA |
| A. | Polysome |
| B. | Phlosome |
| C. | Polosome |
| D. | None of these |
| Answer» B. Phlosome | |
| 25. |
In golgi apparatus the maturing face is |
| A. | Biconcave |
| B. | Convex |
| C. | Spherical |
| D. | Concave |
| Answer» E. | |
| 26. |
Proteins and lipids are converted into glycolipids and glycoproteins by adding carbohydrates by |
| A. | Ribosomes |
| B. | Cytoplasm |
| C. | Golgi apparatus |
| D. | Endoplasmic reticulum |
| Answer» D. Endoplasmic reticulum | |
| 27. |
Amoeboid movements and movement of cyclosis is due to |
| A. | Microfilaments |
| B. | Microtubules |
| C. | Intermediate filaments |
| D. | Cytoskeleton |
| Answer» B. Microtubules | |
| 28. |
Number of nuclear pores/nucleus in an RBC are |
| A. | 1?3 |
| B. | 3?4 |
| C. | 10000 |
| D. | 30000 |
| Answer» C. 10000 | |
| 29. |
Factory of ribosomal systhesis is |
| A. | Cytoplasm |
| B. | Nucleus |
| C. | Nucleolus |
| D. | Endoplasmic reticulum |
| Answer» D. Endoplasmic reticulum | |