MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 5751 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 751. |
Which pair is correct ? (Kerala PMT 2007) |
| A. | 2 |
| B. | 3 |
| C. | 1 |
| D. | 4 |
| Answer» C. 1 | |
| 752. |
Which micro organism is useful in production of citric acid ? (CBSEPMT 1995) |
| A. | Azotobactor |
| B. | Penicillium |
| C. | Asperzilus niger |
| D. | Clostridium |
| Answer» D. Clostridium | |
| 753. |
Which scientist has invented Antibodies ? (KCET 2004) |
| A. | Ernest chain |
| B. | Howard Florey |
| C. | Alexander Fleming |
| D. | W.Fleming |
| Answer» D. W.Fleming | |
| 754. |
Which statement is correct for STPs ? |
| A. | Value of BOD is decrease in effluent. |
| B. | Flocks is sedimanted in settling tank. |
| C. | At end of process biogas is form |
| D. | (d) All the given |
| Answer» E. | |
| 755. |
Which is correct sequence for purification process of STPs ? |
| A. | Primary Sludge EffluentFlocks Active Sludge Biogas |
| B. | Flocks Primary Sludge Effluent Active Sludge Biogas |
| C. | Primary Sludge Effluent Active Sludge Flocks Biogas |
| D. | EffluentFlocks Primary Sludge Active Sludge Biogas |
| Answer» B. Flocks Primary Sludge Effluent Active Sludge Biogas | |
| 756. |
Which pair is correct ? (AIIMS 2003) |
| A. | Rhizobium - Parasites of leguminous plant |
| B. | Mychoriza - Absorbation of Phosphate |
| C. | Yeast - Biogas production |
| D. | Nostoc - Biofuel |
| Answer» C. Yeast - Biogas production | |
| 757. |
What is value of BOD of sewage water in comparision to normal water ? |
| A. | More |
| B. | Less |
| C. | Normal |
| D. | Zero |
| Answer» B. Less | |
| 758. |
By BOD which one is to be measured ? |
| A. | Amount of organic matters of water. |
| B. | Industrial waste of water Resources. |
| C. | Amount of co which connected with Hb. |
| D. | Amount of required O2 for dark reaction of green plants. |
| Answer» B. Industrial waste of water Resources. | |
| 759. |
Which are the main components of biogas ? |
| A. | CH4 + CO2 + N2 |
| B. | CO2 + H2O |
| C. | CH3 + O2 |
| D. | CO2 + H2 |
| Answer» B. CO2 + H2O | |
| 760. |
By which process cheese and toddy is obtained ? (PMT 1998) |
| A. | Fermantation |
| B. | Distillation |
| C. | Pasuirisation |
| D. | Hydrolisis |
| Answer» B. Distillation | |
| 761. |
Which one is true information for toxin Bt ? |
| A. | Bt protien contains active toxins in bacillus |
| B. | Active toxin enters into the ovary of insects and makes it sterile so as to stop the reproduction. |
| C. | Becillius contains antitoxin material |
| D. | Toxic enters into the alimentary canal of insects which results lethal for the insect. |
| Answer» E. | |
| 762. |
According to latest news BT cotton is widely cultivated, in that Bt cotton means.... |
| A. | Bigger thread variety |
| B. | Cotton seeds treated with Barium |
| C. | Produce by biotechnologycal enzymes ristiction endonueleus |
| D. | Contains Endo toxin gene of B.T. |
| Answer» E. | |
| 763. |
Which option provides fertiliser as well as energy ? |
| A. | rhizobium |
| B. | Biogas |
| C. | Fuel Plant |
| D. | All the given |
| Answer» C. Fuel Plant | |
| 764. |
Bio fertilizer means...... |
| A. | Crop which shows rapid growth |
| B. | Cow dung and agricultural west |
| C. | prepared by Anabaena and Nostoc |
| D. | None of them |
| Answer» D. None of them | |
| 765. |
Bacillus thuringiensis is useful in.... (CBSEPMT 2005) |
| A. | Bio fertiliser |
| B. | Biometalogical |
| C. | Biotoxic plant |
| D. | Bio product plant |
| Answer» D. Bio product plant | |
| 766. |
Which organism is useful to produce Riboflavin ? (CBSEPMT 1999) |
| A. | Arabia hossipae |
| B. | Saccharhomyces Cervisiae |
| C. | (a) & (b) both |
| D. | None of them |
| Answer» B. Saccharhomyces Cervisiae | |
| 767. |
How the ethenol is produce in industrial field ? |
| A. | Saecheromisi |
| B. | Clostridium |
| C. | Aspergillus |
| D. | Streptomysis |
| Answer» D. Streptomysis | |
| 768. |
To which BOD is related ? (MP MPT 2002) |
| A. | Microbes and organic matter |
| B. | Organic compound |
| C. | Microbes |
| D. | None of them |
| Answer» C. Microbes | |
| 769. |
Azospirillium and Azotobector for example of..... |
| A. | Decomposer |
| B. | Free living N2 fixative |
| C. | Symbiotic N2 fixative |
| D. | Pathogenes |
| Answer» C. Symbiotic N2 fixative | |
| 770. |
ELISA is... (Karnataka 2007) |
| A. | Enzyme linked immunoabsorbant assay |
| B. | Enzyme linked ions assay |
| C. | Enzyme linked inductive assay |
| D. | None of the above |
| Answer» B. Enzyme linked ions assay | |
| 771. |
Which pair is odd ? (CBSEPMT 2007) |
| A. | Yeast - Ethenol |
| B. | Penicillium - Penicillin |
| C. | Methenogens - Biogas |
| D. | Streptococus - Stetins |
| Answer» E. | |
| 772. |
Carcinoma refers to... |
| A. | Malignant tumours of the connective tissue |
| B. | Malignant tumours of the skin or mucous membrane |
| C. | Malignant tumours of the colon |
| D. | benign tumours of the connective tissue |
| Answer» C. Malignant tumours of the colon | |
| 773. |
Which of the following is laboratory test for diagnosis of cancer ? |
| A. | Pap smear |
| B. | Mamography |
| C. | Barium test |
| D. | PSA |
| Answer» E. | |
| 774. |
What is destroyed by HIV first of all ? (CBSE 2006) |
| A. | Leukocyte |
| B. | Thrombocytes |
| C. | Helper T-Lymphotyes |
| D. | B-Lymphocytes |
| Answer» D. B-Lymphocytes | |
| 775. |
Confirmatory test for AIDS is... (Kerala 2004) |
| A. | Western blot |
| B. | ESR |
| C. | ELISA |
| D. | PCR |
| Answer» B. ESR | |
| 776. |
What is antibody ? (DPMT 1982) |
| A. | Phagocyte |
| B. | Protein which inactivate antigen |
| C. | A part of RBCs |
| D. | A part of Plasma |
| Answer» C. A part of RBCs | |
| 777. |
Which one of the following is not correctly matched ? (CBSE, PMT 2004) |
| A. | Anopheles culifacies - Leishmaniasi |
| B. | Glossina palpalis - Sleeping sickness |
| C. | Culex pipiens - Filariasis |
| D. | Aedes aegypti - Yellow fever |
| Answer» B. Glossina palpalis - Sleeping sickness | |
| 778. |
Sporogony of malarial parasite occurs in... (DPMT 2004) |
| A. | Liver of man |
| B. | Stomach wall of mosquito |
| C. | RBCs of man |
| D. | Salivary gland of mosquito |
| Answer» C. RBCs of man | |
| 779. |
Post erythrocytic part of life cycle of plasmodium is called.... (Hint : In Hydrabad Ronald Ross had done his research related to malarial parasite) |
| A. | golgi cycle |
| B. | short cycle |
| C. | krebs cycle |
| D. | Ross cycle |
| Answer» E. | |
| 780. |
In which of the following situation infection of AIDS do not occur ? |
| A. | Breast feeding to children by AIDS infected mother |
| B. | Foetus of AIDS infected mother |
| C. | Utilization of clothes used by AIDS patient. |
| D. | Utilization of syringe used by AIDS patient.7 |
| Answer» D. Utilization of syringe used by AIDS patient.7 | |
| 781. |
Salmonella is related with... (CBSE, PMT 2001) |
| A. | Typhoid |
| B. | Polio |
| C. | TB |
| D. | Tetanus |
| Answer» B. Polio | |
| 782. |
An ovoviviparous parasite is.... (APMEE 2001) |
| A. | Ascari |
| B. | Taenia |
| C. | Wuchereria |
| D. | Plasmaodium |
| Answer» D. Plasmaodium | |
| 783. |
Barrier preventing entry of pathogens |
| A. | Skin |
| B. | Mucous layor |
| C. | Mucous secretion |
| D. | Cillia |
| Answer» C. Mucous secretion | |
| 784. |
An auto immune disease is... (Orissa 2004) |
| A. | Cancer |
| B. | Erythroblastosis foetalis |
| C. | Asthma |
| D. | Rheumatoid arthritis |
| Answer» E. | |
| 785. |
The function of Ig E is... (Kerala 2007) |
| A. | To mediate in allergic response |
| B. | Activation of B-Cells |
| C. | Protection from inhaled and ingested pathogen |
| D. | Stimulation of complement system, passive immunity to foetus. |
| Answer» B. Activation of B-Cells | |
| 786. |
Incubation period for plasmodium falciparum is... (AMU 2003) |
| A. | 12 day |
| B. | 15 days |
| C. | 20 days |
| D. | 30 days |
| Answer» B. 15 days | |
| 787. |
Which of the following is not according to the chargoff’s rule ? |
| A. | A = T |
| B. | C = G |
| C. | A + G = T + C |
| D. | A + T / G + C =1 |
| Answer» E. | |
| 788. |
Which is not the step of translation ? |
| A. | Initiation |
| B. | Replication |
| C. | Elongation |
| D. | Termination |
| Answer» C. Elongation | |
| 789. |
What does a gene consist of ? |
| A. | Promoter |
| B. | Initiation site & termination site |
| C. | coding sequence |
| D. | All the above |
| Answer» E. | |
| 790. |
Which of the following enzymes help in the process of formation of phosphodiester bond during reverse transcription ? |
| A. | DNA - dependant RNA polymerase |
| B. | DNA dependant DNA polymerase |
| C. | RNA - dependant RNA polymerase |
| D. | RNA - dependant DNA polymerase |
| Answer» E. | |
| 791. |
Which of the following enzyme is not produced by E. coli during lactose catabolism ? |
| A. | β - galactosidase |
| B. | Thioglactoside translacetylase |
| C. | Lactose dehydrogenase |
| D. | Lactose permease |
| Answer» D. Lactose permease | |
| 792. |
Name the enzymes needed for lactose Catabolism in E.coli ? |
| A. | β - galactosidase, permease transacetylase |
| B. | β - galactosidasee Lactase, transacetylase |
| C. | β - galactosidase, lactase, permease |
| D. | Lactase, permease, transacetylase |
| Answer» B. β - galactosidasee Lactase, transacetylase | |
| 793. |
Which is not correct regarding the activity of helicase during DNA replication ? |
| A. | Cuts hydrogen bomds |
| B. | Requires ATP |
| C. | separates DNA strands |
| D. | Stabilizes single strands |
| Answer» D. Stabilizes single strands | |
| 794. |
Which one is a ribozyme ? |
| A. | Helicase |
| B. | Ribonuclease - P |
| C. | Peptidyl transferase |
| D. | Both (B) & (C) |
| Answer» E. | |
| 795. |
Aminoacids lysine, serine and arginine are coded by how many codons ? |
| A. | 6, 4, and 3 respectively |
| B. | 4, 2 and 2 respectively |
| C. | 6 codons |
| D. | 4 codons |
| Answer» D. 4 codons | |
| 796. |
Select correct match with respect to lac-operon model ? |
| A. | Active represser + inducer Inactive repressor |
| B. | Active repressor + corepressor Inactive repressor |
| C. | Inactive repressor + inducer Active repressor |
| D. | Inactive repressor + corepressor Active repressor |
| Answer» B. Active repressor + corepressor Inactive repressor | |
| 797. |
DNA replication in eukaryotes is |
| A. | Unidirectional with many origin |
| B. | Bidirectional with many origin |
| C. | Unidirectional with single origin |
| D. | Bidirectional with single origin |
| Answer» C. Unidirectional with single origin | |
| 798. |
How many nucleotides make one okazaki segment in eukaryotes ? |
| A. | 1000-1500 |
| B. | 100-200 |
| C. | 5000 |
| D. | Not fixed |
| Answer» B. 100-200 | |
| 799. |
select the correct sequence of following in DNA replication |
| A. | single stranded binding proteins - Helicase - Topoisomerase - DNA polymerase |
| B. | Helicase - single stranded binding proteins -Topoisomerase - DNA polymerase |
| C. | Helicase - DNA polymerase - Topoisomerase - Single stranded binding proteins |
| D. | Helicase - Topoisomerase - DNA polymerase - Single stranded binding proteins |
| Answer» C. Helicase - DNA polymerase - Topoisomerase - Single stranded binding proteins | |
| 800. |
Which is the incorrect statement regarding HGP ? |
| A. | HGP is an Indian scientific research project |
| B. | In 1990, the Project was initiated |
| C. | A working draft of the genome was announced in 2000 |
| D. | In February 2001, the analysis of the working draft was published |
| Answer» B. In 1990, the Project was initiated | |