Free Biodiversity and Variety of Life MCQs with Answers
3,130 Biodiversity and Variety of Life MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Biological classification uses taxonomic ranks, binomial nomenclature and shared characteristics to organize life into kingdoms. The major groups include prokaryotes, protists, fungi, plants and animals, with comparisons based on cell type, cell wall, nutrition, body organization, reproduction and evolutionary relationships; prokaryotes lack a membrane-bound nucleus.
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- A. Syphilis and Tuberculosis (TB)
- B. Aids and Typhoid
- C. Measles and Mumps
- D. Tetanus and Cholera
Explanation: Viruses are very small infectious agents. They're made up of a piece of genetic material, such as DNA or RNA, that's enclosed in a coat of…
Correct answer: Measles and Mumps- A. They have flagella
- B. They are multicellular
- C. They do not cause any disease in human
- D. They move by pseudopodia
Explanation: Amoeba belongs to the phylum Sarcodina of the kingdom Protozoa. Pseudopodia is a characteristic of their phylum.
Correct answer: They move by pseudopodia463. All viruses are _.
- A. Autotrophs
- B. Heterotrophs
- C. Parasites
- D. Predators
Explanation: Parasites are organisms that use other organisms for food, shelter, etc, and in exchange, they harm them.
Correct answer: Parasites- A. HIV
- B. Influenza virus
- C. Morbili virus
- D. Vibrio cholera
Explanation: HIV is transmitted through the exchange of bodily fluids such as blood or sweat.
Correct answer: HIV- A. Viral enzyme
- B. Viral genome
- C. Complete virus
- D. Viral lysosome
Explanation: A virion is designated as complete virus. A fully formed infectious particle that contains a viral genome and a protein coat called a…
Correct answer: Complete virus- A. Non enveloped viruses
- B. Enveloped viruses
- C. Prions
- D. Viroids
Explanation: Non-enveloped viruses are also called naked viruses because they donot have a lipid envelope surrounding their protein coat.
Correct answer: Non enveloped viruses- A. Spherical viruses
- B. Tadpole shaped viruses
- C. Rod shaped viruses
- D. Helical shaped viruses
Explanation: The poliovirus is a good example of a spherical (icosahedral) virus made up of only two main components: a protein shell and an RNA…
Correct answer: Spherical viruses- A. Polio virus
- B. Influenza virus
- C. Herpes virus
- D. Mumps virus
Explanation: Herpes viruses are DNA viruses. HSV-1, like the other herpesviruses, carries double-stranded DNA as its genetic material.
Correct answer: Herpes virus- A. Prions
- B. Viroid
- C. Prophage
- D. Bacteriophage
- E. Antigens
Explanation: Prions are misfolded proteins that can induce other proteins to also misfold, leading to the accumulation of abnormal protein structures…
Correct answer: Prions- A. Saccharomyces
- B. Lactobacillus
- C. Penicillium
- D. Lymph Bacterium
- E. Oncolytic
Explanation: Oncolytic viruses are viruses designed or naturally able to infect and destroy cancer cells while sparing normal tissue.
Correct answer: Oncolytic- A. Prion
- B. Viroid
- C. Bacteriophage
- D. Infectious protein
Explanation: Viroids are small, circular RNA molecules that can infect plants. They lack a protein coat and do not encode proteins, relying on the…
Correct answer: Viroid- A. Non-Ribosome
- B. Lysozyme
- C. Peroxisome
- D. Lysosome
Explanation: Lysozyme is an enzyme that plays a crucial role in the immune system and is involved in breaking down bacterial cell walls.
Correct answer: Lysozyme- A. Bacteriophage
- B. Viroids
- C. Prophage
- D. Prions
Explanation: A prophage is the latent form of a bacteriophage (a virus that infects bacteria) when it integrates its genetic material into the…
Correct answer: Prophage- A. Adenovirus
- B. Tobacco Mosaic Virus
- C. Influenza virus
- D. Bacteriophage
Explanation: The capsid of adenovirus typically contains 52 capsomeres. This includes 240 hexon capsomeres and 12 penton capsomeres at the vertices.
Correct answer: Adenovirus- A. Genome
- B. Capsomere
- C. Virion
- D. Envelope
Explanation: A virion is the fully assembled, infectious form of a virus when it's outside a host cell.
Correct answer: Virion- A. Poxivirus
- B. Paporivirus
- C. Picornovirus
- D. Paramyxovirus
Explanation: Measles is caused by the measles virus, which is an RNA virus belonging to the Morbillivirus genus within the Paramyxoviridae family.
Correct answer: Paramyxovirus- A. Genome injection
- B. Penetration
- C. Replication
- D. Adsorption
Explanation: Penetration in the context of bacteriophages refers to the process by which the phage injects its genetic material into a bacterial host…
Correct answer: Penetration- A. Adsorption
- B. Attachment
- C. Multiplication
- D. Penetration
Explanation: The bacteriophage releases lysozyme, an enzyme that breaks down the bacterial cell wall, allowing the viral genetic material to enter and…
Correct answer: Penetration- A. Capsid
- B. Collar
- C. Core
- D. End plate
Explanation: The collar of a bacteriophage is a structural component that connects the capsid to the tail.
Correct answer: Collar- A. Charles Chamberland
- B. Ivanowski
- C. Louis Pasteur
- D. Stanley
Explanation: Wendell Meredith Stanley was the first to purify a virus, specifically the Tobacco Mosaic Virus (TMV) in 1935.
Correct answer: Stanley