MCQOPTIONS
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MCQOPTIONS
This section includes 38 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. |
So far over _____ number of species of animals are known: |
| A. | Million |
| B. | 1 million |
| C. | 1 |
| D. | 2 million |
| Answer» D. 2 million | |
| 2. |
Which of the following category is most general with its members lest resembling with each other than the other categries: |
| A. | Species |
| B. | Genus |
| C. | Family |
| D. | Order |
| Answer» E. | |
| 3. |
Vaccine Was discovered by : |
| A. | Louis Pasteur |
| B. | Edward Jennar |
| C. | Ivanowski |
| D. | Stanely |
| Answer» C. Ivanowski | |
| 4. |
Solanum tuberosum is a scientific name of: |
| A. | Onion |
| B. | Amaltas |
| C. | Potato |
| D. | Tomato |
| Answer» D. Tomato | |
| 5. |
The name Bacteriophage was coined by: |
| A. | Charles Chamberland |
| B. | Ivanowski |
| C. | Twort |
| D. | D Herelle |
| Answer» E. | |
| 6. |
The size of smallest virus is: |
| A. | 10 nm |
| B. | 20 nm |
| C. | 30 nm |
| D. | 40 nm |
| Answer» C. 30 nm | |
| 7. |
The size of poxvirus is: |
| A. | 20 nm |
| B. | 200 nm |
| C. | 250 nm |
| D. | 300 nm |
| Answer» D. 300 nm | |
| 8. |
Viruses are ______ smaller than bacteria |
| A. | 10 - 100 times |
| B. | 10 - 1000 times |
| C. | 100 - 1000 times |
| D. | 1000 - 10000 times |
| Answer» C. 100 - 1000 times | |
| 9. |
Which of the statement about viruses is incorrect : |
| A. | We can not grow them in laboratories on artificial medias |
| B. | They are obligate intracellular parasite. |
| C. | They can synthesize their nucleic acid |
| D. | They are resistant to most of antibiotic treatment |
| Answer» D. They are resistant to most of antibiotic treatment | |
| 10. |
Protein subunits of capsid is called the capsomeres is a characteristic of each virus. Their number in Herpes virus is: |
| A. | 100 |
| B. | 152 |
| C. | 162 |
| D. | 172 |
| Answer» D. 172 | |
| 11. |
Protein coat the capsid of adenovirus is : |
| A. | Surrounded by genome |
| B. | Surrounding genome |
| C. | Surrounding the envelope |
| D. | Both B and C |
| Answer» C. Surrounding the envelope | |
| 12. |
The agent of controversial nature causing mad cow infection is: |
| A. | Bacteria |
| B. | Cowpox Virus |
| C. | Adenovirus |
| D. | Prion |
| Answer» E. | |
| 13. |
A virion is : |
| A. | Virus |
| B. | Viral protein |
| C. | Viral lysozyme |
| D. | Viral gene |
| Answer» B. Viral protein | |
| 14. |
An isolated virus is not considered living since it: |
| A. | Separates in to two inner parts |
| B. | Can not metabolize |
| C. | Rapidly looses its Genome chemical inert |
| D. | Is coated with an air tight shield |
| Answer» C. Rapidly looses its Genome chemical inert | |
| 15. |
Bacteriopahage that infect E. coli are called: |
| A. | M type |
| B. | N type |
| C. | T type |
| D. | S type |
| Answer» D. S type | |
| 16. |
Attachment of the bacteriophage with the receptor site on the bacterial cell wall involves: |
| A. | Strong covalent bond between virion and the receptor site. |
| B. | Week chemical unior between them |
| C. | Both A and B depending upon the phage |
| D. | None of these |
| Answer» C. Both A and B depending upon the phage | |
| 17. |
In life cycle of bacteriophage which step occur after attachment of prophage with the receptor site of the bacterial cell wall: |
| A. | Absorption |
| B. | Multiplication |
| C. | Lysogeny |
| D. | Penetration |
| Answer» E. | |
| 18. |
Which of the following is incorrect for the lysogenic cycle in life cycle of bacteriophage: |
| A. | Phage when gets incorporated with the bacterial chromosome is called prophage. |
| B. | The bacterium continues to live and reproduce normally |
| C. | Lysogenic bacteria may get infected by the related phage. |
| D. | The cycle may convert into lytic type resulting from environmental exposure. |
| Answer» D. The cycle may convert into lytic type resulting from environmental exposure. | |
| 19. |
Allium cepa is the scientific name of : |
| A. | Onion |
| B. | Amaltas |
| C. | Potato |
| D. | Tomato |
| Answer» C. Potato | |
| 20. |
Those organisms which can prepare their own food from simple inorganic material and can store energy are called |
| A. | Autotrophs |
| B. | Heterotrophs |
| C. | Procariotique |
| D. | Eu-cariotique |
| Answer» B. Heterotrophs | |
| 21. |
Which of the Euglenas (a Protoctista) character resembles that of animals: |
| A. | They can move |
| B. | They lack cell wall |
| C. | They do not have chlorophyll |
| D. | Both a and b |
| Answer» E. | |
| 22. |
The word which E-Chatton suggested for bacteria and blue green algae was: |
| A. | Autotrophs |
| B. | Heterotrophs |
| C. | Pro-cariotique |
| D. | Eu-cariotique |
| Answer» D. Eu-cariotique | |
| 23. |
Five kingdom classification was proposed by : |
| A. | Carlous Linnaeus |
| B. | E-Chatton |
| C. | Robert Whittaker |
| D. | Lynn Margulis and Karlene Schwartz |
| Answer» D. Lynn Margulis and Karlene Schwartz | |
| 24. |
Organisms of which of the following kingdom have absorptive mode of nutrition: |
| A. | Prokaryotae |
| B. | Protoctista |
| C. | Animalia |
| D. | Fungi |
| Answer» E. | |
| 25. |
Kingdom Protoctista includes: |
| A. | Prokaryotic organisms |
| B. | Unicellular organisms |
| C. | Fungi |
| D. | Eu-cariotiquic organisms |
| Answer» D. Eu-cariotiquic organisms | |
| 26. |
Amoeba belongs to which kingdom: |
| A. | Prokaryotae |
| B. | Plantae |
| C. | Monera |
| D. | Protista |
| Answer» E. | |
| 27. |
Which of the following organisms have Chitin as a major structural component of their cell wall: |
| A. | Prokaryotae |
| B. | Protoctista |
| C. | Plantae |
| D. | Fungi |
| Answer» E. | |
| 28. |
The word virus is derived from Latin word venome meaning |
| A. | Sweet fluid |
| B. | Sore Fluid |
| C. | Poisonous Fluid |
| D. | Salty Fluid |
| Answer» D. Salty Fluid | |
| 29. |
Other name for Kingdom monera is: |
| A. | Protoctista |
| B. | Prokaryotae |
| C. | Archae |
| D. | None of these |
| Answer» C. Archae | |
| 30. |
DNA or RNA of viruses is enclosed in ______ coat: |
| A. | Protein |
| B. | Carbohydrate |
| C. | Lipid |
| D. | DNA |
| Answer» B. Carbohydrate | |
| 31. |
In lysogenic cycle the process of spearation of phage DNA from the hosts chromosome and initiation of lytic cycle is called: |
| A. | Lysis |
| B. | Lysogeny |
| C. | Induction |
| D. | Adsorption |
| Answer» D. Adsorption | |
| 32. |
In the lytic cycle of bacteriophage the host DNA is: |
| A. | Replicated |
| B. | Turn off by the protein coat. |
| C. | Digested into its nucleotides |
| D. | Turned on by the removal of the protein coat |
| Answer» D. Turned on by the removal of the protein coat | |
| 33. |
In the Lysogenic cycle the DNA of the bacteriophage: |
| A. | Joins the bacterial chromosomes. |
| B. | Attaches to the inner surface of the host membrane |
| C. | Is immediately degraded when enters the host. |
| D. | Goes directly to host ribosomes for translation |
| Answer» B. Attaches to the inner surface of the host membrane | |
| 34. |
Temperate phage may exist as : |
| A. | Prophage |
| B. | Capsid |
| C. | Viron |
| D. | Retrovirus |
| Answer» B. Capsid | |
| 35. |
Tobacco mosaic virus is : |
| A. | Spherical |
| B. | Rod Shaped |
| C. | Tadpole like |
| D. | Hexagonal |
| Answer» C. Tadpole like | |
| 36. |
An enzyme which can convert single stranded RNA into double stranded viral DNA is called: |
| A. | DNAase |
| B. | RNAase |
| C. | DNA polymrase |
| D. | Reverse Transcriptase |
| Answer» E. | |
| 37. |
Mode of transmission of hepatitis A is : |
| A. | Serum |
| B. | Faeco-oral |
| C. | Sexual contact |
| D. | All of these |
| Answer» C. Sexual contact | |
| 38. |
For which of the following no preventive vaccine is available |
| A. | HAV |
| B. | HBV |
| C. | HCV |
| D. | HEV |
| Answer» D. HEV | |