MCQOPTIONS
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MCQOPTIONS
This section includes 67 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Sterilization is done by use of |
| A. | x-rays |
| B. | beta rays |
| C. | gamma rays |
| D. | alpha rays |
| Answer» D. alpha rays | |
| 52. |
Bacteria which lack flagella is known as |
| A. | Atrichous |
| B. | peritrichous |
| C. | Amphitrichous |
| D. | autotrophic |
| Answer» B. peritrichous | |
| 53. |
Bacterial membrane is deprived of |
| A. | enzymes |
| B. | sterols |
| C. | proteins |
| D. | sugar |
| Answer» C. proteins | |
| 54. |
An estimate measurement of a chromosome in close circle of Escherichia Coli is |
| A. | 1400 µm |
| B. | 1200 µm |
| C. | 1100 µm |
| D. | 1000 µm |
| Answer» B. 1200 µm | |
| 55. |
Algae which serves as a "complete whole food" and contain all essential amino acids in perfect balance, is known as super |
| A. | storing algae |
| B. | blue algae |
| C. | green algae |
| D. | blue green algae |
| Answer» E. | |
| 56. |
Four postulates were given by Robert Koch in the |
| A. | Germ theory of disease |
| B. | Disease Theory |
| C. | Germs Theory |
| D. | Four Postulate theory |
| Answer» B. Disease Theory | |
| 57. |
Example of bacteria which can be used as a pollution indicator is |
| A. | oscillatoria |
| B. | baccilatoria |
| C. | streptolatoria |
| D. | streptococcus |
| Answer» B. baccilatoria | |
| 58. |
Bacteria which can grow with or without presence of oxygen is known as |
| A. | facultative bacteria |
| B. | photosynthetic bacteria |
| C. | chemosynthetic bacteria |
| D. | uniroebic bacteria |
| Answer» B. photosynthetic bacteria | |
| 59. |
Viruses only replicate and divide |
| A. | when they are on bread |
| B. | when they are in an environment they can find a host cells |
| C. | when once they are inside the host cell |
| D. | in night |
| Answer» D. in night | |
| 60. |
Outside the host cells, viruses do not |
| A. | replicate |
| B. | feed |
| C. | respire |
| D. | all of above |
| Answer» E. | |
| 61. |
Many bacteria contains additional molecules which are very helpful in modern genetic engineering techniques, they are circular and self replicating and called as |
| A. | ribosomes |
| B. | spores |
| C. | plasmids |
| D. | mesosome |
| Answer» D. mesosome | |
| 62. |
Tadpole shaped viruses are largely |
| A. | tobacco mosaic virus |
| B. | bacteriophages |
| C. | influenza virus |
| D. | may cause death |
| Answer» C. influenza virus | |
| 63. |
When rod shaped bacteria appears to be in pair arrangement it is termed as |
| A. | staphylococci |
| B. | bacillus |
| C. | diplobacilli |
| D. | streptobaccili |
| Answer» D. streptobaccili | |
| 64. |
Bacteria which obtain their food from dead organic matter called as |
| A. | heterotrophs |
| B. | autotrophs |
| C. | saprophytic |
| D. | symbiotic |
| Answer» D. symbiotic | |
| 65. |
Bacteria have single chromosome, i.e. they are |
| A. | diploid |
| B. | haploid |
| C. | monoid |
| D. | tetroid |
| Answer» C. monoid | |
| 66. |
An antibiotic can discolor teeth of young children permanently is |
| A. | Clindamycin |
| B. | azithromycin |
| C. | tetracycline |
| D. | streptomycin |
| Answer» D. streptomycin | |
| 67. |
Phase in which death rate is equal to reproduction and multiplication rate is |
| A. | action phase |
| B. | stationary phase |
| C. | medial phase |
| D. | cease phase |
| Answer» C. medial phase | |