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biology mcqs with answers
Which Statement Is True About An Aqueous Medium______
Ionic As Well As Non Ionic Substance In Aqueous Media Retains Their Identity | |
Ions And Molecules Move Randomly Thus Are In More Favorable State To React With Other Molecules And Ions | |
It Is Less Favorable Media For Chemical Reactions | |
Enzymes Can Not Perform Catalysis Reaction In This Medium |
Which Statement Is Incorrect About Lock And Key Model______
Active Site Of An Enzyme Is A Non Flexible Structure | |
It Explains The Mechanism Of Every Chemical Reaction | |
Specific Enzyme Can Transform Only A Specific Substrate | |
Active Site Does Not Change Before During Or Even After The Reaction |
Which Statement Correctly Describes The Transcription Of Dna?
It Produces Mrna | |
It Is A Semi Conservation Process | |
It Occurs At Surface Of Ribosomes | |
It Produces Another Dna Molecule |
Which Statement About Enzyme Is Incorrect______
They Catalyze A Chemical Reaction Without Being Utilized. | |
All Enzymes Are Fibrous Proteins. | |
Some Of Them Consist Solely Of Protein With No Non Protein Part. | |
They Without Their Cofactor Are Called Apoenzyme. |
Which Organisms Are Sometimes Called The Pastures Of The Sea?
Radiolarians | |
Dinoflagellates | |
Foraminiferans | |
Diatoms |
Which Organelles Contain Its Own Dna?
Mitochondria | |
Nucleus | |
Chloroplast | |
All Of These |
Which One The Following Fatty Acid Is More Soluble In An Organic Solvent And Has Higher Melting Point______
Acetic Acid | |
All Have Same | |
Butyric Acid | |
Palmitic Acid |
Which One Of These Structures Involved In Replication Of Bacterial Dna?
Mesosome | |
Pilli | |
Plasmid | |
Chromosomes |
Which One Of These Is A Set Of Useful Insects?
Honeybee , Lac Insect, Cochineal Insect | |
Honeybee, Silkmoth, Tsetse Fly | |
Sikmoth, Honeybee, Locust | |
Sandfly , Butterfly, Hoeybee |
Which One Of These Is An Insect?
Moth | |
Mite | |
Spider | |
Scorpion |
Which One Of The Following Vitamin Is Known As The Anti- Sterile Factor?
A-Tocopherols | |
Riboflavin | |
Retinol | |
Ascorbic Acid |
Which One Of The Following Toxic Metals Is Extensively Present In Newspaper?
Pb | |
Mg | |
Cd | |
Hg |
Which One Of The Following Syndrome Is The Result Of Meiotic Non Dysjunction?
Downs Syndrome | |
All Of These | |
Turners Syndrome | |
Klinefelters Syndrome |
Which One Of The Following Stage Preceeds Mitosis During Cell Cycle?
G2 Phase | |
M Phase | |
G1 Phase | |
S Phase |
Which One Of The Following Specially Result In Chronic Liver Disease Leading To Hepatic Failure:
Hcv | |
Hbv | |
Hav | |
Hev |
Which One Of The Following Remove Nucleotides From The Ends Of Dna Or Rna?
Deoxyribonuclease | |
Endonuclease | |
Exonuclease | |
S 1 Nuclease |
Which One Of The Following Is The Largest Group Of Fungi?
Zygomycota | |
Basidiomycota | |
Ascomycota | |
Deuteromycota |
Which One Of The Following Is Representing The Group Of Diatoms?
Cochlodinium, Gymnodinium, Lenodinium, Peridinium | |
Euglenamorpha, Hedneria , Heteronema, Colacium | |
Pinnularia, Navicula, Cymbella, Melosira | |
Nostoc, Anabaena, Aulosira, Cylindrospermum |
Which One Of The Following Is Referred As The Species Occupation?
Biome | |
Autecology | |
Ecosystem | |
Niche |
Which One Of The Following Is Most Likely To Occur In An Animal During Winter?
Panting | |
Thermogenesis | |
Activation Of Sweat Glands | |
Dilation Of Skin Blood Vessels |
Which One Of The Following Is Different From All The Rest Regarding The Number Of Cells Inits Body______
Yeasts | |
Rusts | |
Molds | |
Mushrooms |
Which One Of The Following Is Correct Sequence Of Stages Of Prophase 1 Of Meiosis
Diakinesis Diplotene Pachytene Leptotene Zygotene | |
Zygotene Leptotene Pachytene Diplotene Diakinesis | |
Pachytene Leptotene Diplotene Zygotene Diakinesis | |
Leptotene Zygotene Pachytene Diplotene Diakinesis |
Which One Of The Following Is Avascular Structure?
A Spongy Bone. | |
All Of These | |
A Compact Bone. | |
Cartilage |
Which One Of The Following Is An Example Of A Non-Elastic Connective Tissue?
Muscles. | |
Ligaments. | |
None Of These | |
Tendon |
Which One Of The Following Forms The Blk Of Exoskeleton Of An Arthropod?
Procuticle | |
None Of These | |
Epicuticle | |
Ectocuticle |