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MCQOPTIONS
This section includes 14620 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.
| 12951. |
Which of the following sequence is found in Rous sarcoma virus [MP PMT 1990] |
| A. | DNA ® RNA ® Protein |
| B. | RNA ® RNA ®Protein |
| C. | RNA ® DNA ® RNA ® Protein |
| D. | DNA ® DNA ® Protein |
| Answer» D. DNA ® DNA ® Protein | |
| 12952. |
Which of the following is a pandemic disease |
| A. | Amoebic dysentry |
| B. | Hepatitis |
| C. | Filariasis |
| D. | Influenza |
| Answer» E. | |
| 12953. |
Phages that show lysogenic cycle are called [MP PMT 1997] |
| A. | Temperate phages |
| B. | Virulent phages |
| C. | Avirulent phages |
| D. | Lytic phages |
| Answer» B. Virulent phages | |
| 12954. |
Virus that infects bacteria is called [MH CET 2000] |
| A. | Bacteriophage |
| B. | Cyanophage |
| C. | Telophase |
| D. | Prophase |
| Answer» B. Cyanophage | |
| 12955. |
Interferon is [MH CET 2003] |
| A. | Bacteria |
| B. | Anti-Viral |
| C. | Anti-algal |
| D. | Anti-bacterial |
| Answer» C. Anti-algal | |
| 12956. |
Caulimo virus (Cauliflower mosaic virus) are a group of viruses which have [MP PMT 1990] |
| A. | Double stranded RNA |
| B. | Single stranded RNA |
| C. | Single stranded DNA |
| D. | Double stranded DNA |
| Answer» E. | |
| 12957. |
The filterable property of tobacco mosaic virus (TMV) was shown by [MP PMT 1996] |
| A. | Ivanowsky |
| B. | Beijerinck |
| C. | Stanley |
| D. | Winogradsky |
| Answer» B. Beijerinck | |
| 12958. |
Genetic material in TMV is [EAMCET 1993; MP PMT 2001] |
| A. | DNA |
| B. | RNA |
| C. | Capsid |
| D. | Both DNA and RNA |
| Answer» C. Capsid | |
| 12959. |
Temin worked on which virus [BHU 2000] |
| A. | Herpesvirus |
| B. | Rhinovirus |
| C. | Retrovirus |
| D. | Denguvirus |
| Answer» D. Denguvirus | |
| 12960. |
The part of the virus which gives to it the hereditary feature, is [BHU 1994; BVP 2003] |
| A. | Capsid |
| B. | Capsomere |
| C. | Nucleic acid |
| D. | Nucleotide |
| Answer» D. Nucleotide | |
| 12961. |
Hydrophobia is caused by a [CPMT 1991, 93] |
| A. | Bacterium |
| B. | Fungus |
| C. | Virus |
| D. | Protozoan |
| Answer» D. Protozoan | |
| 12962. |
Virusus usually infect the whole plant except the [CBSE PMT 1993; MH CET 2000] |
| A. | Stem apex |
| B. | Cortex |
| C. | Pith |
| D. | Phloem |
| Answer» B. Cortex | |
| 12963. |
Interferon suppresses the pathogenic activity of [CMC Vellore 1994; BVP 2000] |
| A. | Bacteria |
| B. | Viruses |
| C. | Protozoans |
| D. | Helminths |
| Answer» C. Protozoans | |
| 12964. |
Rugose mosaic of potato is caused by |
| A. | Potato virus?A |
| B. | Potato virus?Y |
| C. | Potato virus?X |
| D. | (b) and (c) both |
| Answer» E. | |
| 12965. |
Interferon is inhibitory to |
| A. | Bacteria |
| B. | Viruses |
| C. | Fungi |
| D. | Algae |
| Answer» C. Fungi | |
| 12966. |
Which one is the smallest among the following [CBSE PMT 1988] |
| A. | Bacteriophage |
| B. | TMV |
| C. | E. coli |
| D. | Neurospora |
| Answer» B. TMV | |
| 12967. |
The genetic material in viruses is [CPMT 1994; MP PMT 1995, 98, 2000; CBSE PMT 1997; Pb. PMT 2000; BHU 2005] |
| A. | Only RNA |
| B. | Only DNA |
| C. | RNA and DNA both |
| D. | RNA or DNA i.e. one nucleic acid in a virus |
| Answer» E. | |
| 12968. |
The enzymes formed by bacteriophage which ruptures the bacterial wall is |
| A. | Proenzymes |
| B. | Phage?lysozymes |
| C. | Endolysins |
| D. | Phagoproteins |
| Answer» D. Phagoproteins | |
| 12969. |
Which of the following was used by Hershey and Chase to prove that DNA is the chemical basis of heredity [BHU 1981; AIIMS 1993; BVP 2003] |
| A. | TMV |
| B. | Cauliflower mosaic virus |
| C. | Dahlia mosaic virus |
| D. | T2 bacteriophage |
| Answer» E. | |
| 12970. |
Zymophage remains parasite on |
| A. | Bacteria |
| B. | Algae |
| C. | Yeast |
| D. | None of these |
| Answer» D. None of these | |
| 12971. |
The type of linkage present in carbohydrates is [CPMT 2005] |
| A. | Peptide |
| B. | Glycosidic |
| C. | Amide |
| D. | Phosphate bonds |
| Answer» C. Amide | |
| 12972. |
Which of these particles determine the chemical properties of an atom |
| A. | Protons |
| B. | Neutrons |
| C. | Electrons |
| D. | None of these |
| Answer» D. None of these | |
| 12973. |
The most abundant element present in the plants is [CBSE PMT 2004] |
| A. | Iron |
| B. | Carbon |
| C. | Nitrogen |
| D. | Manganese |
| Answer» C. Nitrogen | |
| 12974. |
Bones of birds are |
| A. | Hollow |
| B. | Penumatic |
| C. | Both (a) and (b) |
| D. | None |
| Answer» D. None | |
| 12975. |
In ATP, the high energy bond is the one which links [KCET 2002] |
| A. | Adenine with ribose |
| B. | Ribose with phosphate |
| C. | Adenine with phosphate |
| D. | Phosphate to phosphate |
| Answer» E. | |
| 12976. |
According to the first law of thermodynamics, the total amount of energy in the universe |
| A. | Is constant |
| B. | Varies up and down |
| C. | Is always increasing |
| D. | Is always decreasing |
| Answer» B. Varies up and down | |
| 12977. |
The process in which excess energy is lost by light waves is called [JIPMER 2002] |
| A. | Photolysis |
| B. | Fluorescence |
| C. | Photo-oxidation |
| D. | Photophosphorylation |
| Answer» D. Photophosphorylation | |
| 12978. |
Chitin is a structural polysaccharide and is polymerised form [AMU 2001] |
| A. | Glucose |
| B. | Ribose |
| C. | Deoxyribose |
| D. | None of these |
| Answer» E. | |
| 12979. |
Organisms which display properties of both living and nonliving [AFMC 2000] |
| A. | Viruses |
| B. | Diatoms |
| C. | Lichens |
| D. | Bacteria |
| Answer» B. Diatoms | |
| 12980. |
A solution that resists changes in pH is a/an |
| A. | Buffer |
| B. | Catalyst |
| C. | Reducing agent |
| D. | Oxidizing agent |
| Answer» B. Catalyst | |
| 12981. |
Growth, development and functioning of living body is due to: |
| A. | Order |
| B. | Homeostasis |
| C. | Metabolism |
| D. | Adaptation |
| Answer» D. Adaptation | |
| 12982. |
On how many criteria living organisms have been classified into five kingdoms? |
| A. | Two |
| B. | Four |
| C. | Five |
| D. | Three |
| Answer» D. Three | |
| 12983. |
Which of the following is the only taxonomic categories that has a real existence? |
| A. | Phylum |
| B. | Species |
| C. | Genus |
| D. | Kingdom |
| Answer» C. Genus | |
| 12984. |
If an organism is in the same class but not in the same family but it may belong to same: |
| A. | Genus |
| B. | Species |
| C. | Variety |
| D. | Order |
| Answer» E. | |
| 12985. |
Morphologically similar but reproductively isolated species are called: |
| A. | Neontological species |
| B. | Sibling species |
| C. | Allopatric species |
| D. | Morpho-species |
| Answer» C. Allopatric species | |
| 12986. |
The complex organic compounds that may have first evolved in the direction of origin of life on earth, may have been [CPMT 1981] |
| A. | Proteins and amino acids |
| B. | Proteins and nucleic acids |
| C. | Urea and nucleic acids |
| D. | Urea and amino acids |
| Answer» C. Urea and nucleic acids | |
| 12987. |
The part of the earth where life is exists, made up of [AMU 2005] |
| A. | Lithosphere |
| B. | Hydrosphere |
| C. | Atmosphere |
| D. | All of the above |
| Answer» E. | |
| 12988. |
Coacervates were experimentally produced by [KCET 2004] |
| A. | Urey and Miller |
| B. | Jacob and Monod |
| C. | Fischer and Huxley |
| D. | Sidney Fox and Oparin |
| Answer» E. | |
| 12989. |
Theory of special creation was given by [Pb. PMT 2000] |
| A. | Weisman |
| B. | Helmont |
| C. | Manpertuis |
| D. | Father Saurez |
| Answer» E. | |
| 12990. |
Under certain conditions scientists have obtained cell-like structures. These are known as [MP PMT 1999; Pb. PMT 2000] |
| A. | Microbes |
| B. | Protists |
| C. | Coacervates |
| D. | Prebiotic soup |
| Answer» D. Prebiotic soup | |
| 12991. |
Which is responsible for origin of life |
| A. | Spontaneous generation |
| B. | Special creation |
| C. | Catastrophy |
| D. | Chemosynthesis |
| Answer» E. | |
| 12992. |
First respiration arose on earth was |
| A. | Anaerobic |
| B. | Aerobic |
| C. | (a) and (b) both |
| D. | Cellular respiration and as a respiratory gas |
| Answer» B. Aerobic | |
| 12993. |
The primitive environment was reducing because in it |
| A. | \[C{{O}_{2}}\]was more |
| B. | \[{{H}_{2}}\] was more |
| C. | \[{{O}_{2}}\] was more |
| D. | \[N{{H}_{3}}\]was more |
| Answer» C. \[{{O}_{2}}\] was more | |
| 12994. |
An experiment to prove that organic compounds were the basis of life, was performed by [CPMT 1986; MP PMT 1994] |
| A. | Oparin |
| B. | Miller |
| C. | Melvin |
| D. | Fox |
| Answer» C. Melvin | |
| 12995. |
The viruses contain [AFMC 1986] |
| A. | Proteins only |
| B. | DNA only |
| C. | Nucleic acids only |
| D. | Proteins, DNA or RNA (nucleic acids) |
| Answer» E. | |
| 12996. |
The theory of evolution indicates that [AFMC 1985] |
| A. | Man evolved from monkeys |
| B. | Monkey evolved from man |
| C. | Man evolved from dinosaurs |
| D. | Man and apes had a common ancestors |
| Answer» E. | |
| 12997. |
Radiations with successful adaptations in case of insects is a result of [Pune CET 1998] |
| A. | Genetic divergence |
| B. | Micro-evolution |
| C. | Macro-evolution |
| D. | Mega-evolution |
| Answer» D. Mega-evolution | |
| 12998. |
Evolution in which the animals of two different gene ecology show too much similarity with one another, is called [CBSE PMT 1996] |
| A. | Parallel evolution |
| B. | Retrogressive evolution |
| C. | Progressive evolution |
| D. | Convergent evolution |
| Answer» E. | |
| 12999. |
A mutation from the wild to a new type is called |
| A. | Reverse mutation |
| B. | Frame?shift mutation |
| C. | Gibberish mutation |
| D. | Forward mutation |
| Answer» E. | |
| 13000. |
Mule is a hybrid, which of the following statement, is correct [NCERT 1976] |
| A. | Mule is not a species |
| B. | Mule is a new species |
| C. | Horse and ass are two populations |
| D. | Mule represents a common ancestor of horse and ass |
| Answer» B. Mule is a new species | |