MCQOPTIONS
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MCQOPTIONS
This section includes 1275 Mcqs, each offering curated multiple-choice questions to sharpen your Biology Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 701. |
Interconversion of carbohydrates proteins and lipids in living cells are an example of____________? |
| A. | Coordinated catabolic activities |
| B. | Coordinated anabolic activities |
| C. | Both A and B |
| D. | Any one |
| Answer» D. Any one | |
| 702. |
The one which causes contraction of wall of the uterus during and after birth? |
| A. | ADH |
| B. | MSH |
| C. | Oxytocin |
| D. | Progesterone |
| Answer» D. Progesterone | |
| 703. |
The monosaccharide found in some bacteria and occurring rarely are______________? |
| A. | Trioses |
| B. | Hexoses |
| C. | Tetroses |
| D. | Pentoses |
| Answer» D. Pentoses | |
| 704. |
Which one of the following is correct sequence of stages of prophase 1 of meiosis |
| A. | Diakinesis diplotene pachytene leptotene zygotene |
| B. | Zygotene leptotene pachytene diplotene diakinesis |
| C. | Leptotene zygotene pachytene diplotene diakinesis |
| D. | Pachytene leptotene diplotene zygotene diakinesis |
| Answer» D. Pachytene leptotene diplotene zygotene diakinesis | |
| 705. |
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 | |
| 706. |
Which one of the following stage preceeds mitosis during cell cycle? |
| A. | G1 phase |
| B. | S phase |
| C. | G2 phase |
| D. | M phase |
| Answer» D. M phase | |
| 707. |
Non polar organic molecules are ___________ in water? |
| A. | Soluble |
| B. | Insoluble |
| C. | Partially soluble |
| D. | Depends upon condition |
| Answer» C. Partially soluble | |
| 708. |
There are mainly __________ types of tRNA? |
| A. | 170 |
| B. | 20 |
| C. | 25 |
| D. | 15 |
| Answer» C. 25 | |
| 709. |
Genes will not be found in gene pairs in the_____________? |
| A. | Muscle cell of worm |
| B. | Uterine cells of dog |
| C. | Sperm cells of frog |
| D. | Guard cells of leaf |
| Answer» D. Guard cells of leaf | |
| 710. |
Which conjegated molecules play important role in gene expression___________? |
| A. | Glycolipids |
| B. | Glycoproteins |
| C. | Nucleohistones |
| D. | None of these |
| Answer» D. None of these | |
| 711. |
The one which is a weed killer is___________? |
| A. | IAA |
| B. | NAA |
| C. | 2 4-D |
| D. | GA |
| Answer» D. GA | |
| 712. |
The structure which has been formed or modified from gill pouches in humans is___________? |
| A. | Gills |
| B. | Eustachian tube |
| C. | Middle ear |
| D. | Lungs |
| Answer» C. Middle ear | |
| 713. |
The discease in which transmembrane carrier for the chloride ion is not produced is__________? |
| A. | Hyperchloesterolemia |
| B. | Cystic fibrosis |
| C. | Severe combined immunodeficiency syndrome |
| D. | AIDS |
| Answer» C. Severe combined immunodeficiency syndrome | |
| 714. |
So far over _____________ number of species of animals are known? |
| A. | million |
| B. | 1 million |
| C. | 1 |
| D. | 2 million |
| Answer» D. 2 million | |
| 715. |
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 | |
| 716. |
Coelom that develops from the archenteron as outpouching is__________? |
| A. | Pseudocoelom |
| B. | Enterocoelom |
| C. | Schizocoelom |
| D. | None of these |
| Answer» C. Schizocoelom | |
| 717. |
The greatest diversity of animals in the lake is found in which one of the following zones? |
| A. | Limmnetic zone |
| B. | Littoral zone |
| C. | Profundal zone |
| D. | None of these |
| Answer» C. Profundal zone | |
| 718. |
DNA or RNA of viruses is enclosed in _______________ coat? |
| A. | Protein |
| B. | Carbohydrate |
| C. | Lipid |
| D. | DNA |
| Answer» B. Carbohydrate | |
| 719. |
Solanum tuberosum is a scientific name of___________? |
| A. | Onion |
| B. | Amaltas |
| C. | Potato |
| D. | Tomato |
| Answer» D. Tomato | |
| 720. |
What is the characteristic feature of consumers? |
| A. | Autotroph |
| B. | Heterotroph |
| C. | Parasite |
| D. | Saprophyte |
| Answer» C. Parasite | |
| 721. |
All of the following are involved in nitrification except |
| A. | Nitrobacter |
| B. | Nitrosomonas |
| C. | Rhizohium |
| D. | All of these |
| Answer» D. All of these | |
| 722. |
A virion is______________? |
| A. | Virus |
| B. | Viral protein |
| C. | Viral lysozyme |
| D. | Viral gene |
| Answer» B. Viral protein | |
| 723. |
Competition between species will be greatest if they attempt to occupy the same___________? |
| A. | Ecosystem |
| B. | Community |
| C. | Habitat |
| D. | Niche |
| Answer» E. | |
| 724. |
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. | |
| 725. |
What percentage of light reaching the earth is used in photosynthesis? |
| A. | 25% |
| B. | 10% |
| C. | 5% |
| D. | 1% |
| Answer» E. | |
| 726. |
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 | |
| 727. |
In most ecosystems the greatest amount of energy flows through the____________? |
| A. | Secondary consumers |
| B. | Herbivores |
| C. | Carnivores |
| D. | Decomposers |
| Answer» C. Carnivores | |
| 728. |
The one which is present in all aerobic species is _________? |
| A. | Cytohrome c |
| B. | Cytochrome a |
| C. | Cytochrome a3 |
| D. | Cytochrome b |
| Answer» B. Cytochrome a | |
| 729. |
The size of smallest virus is______________? |
| A. | 10 nm |
| B. | 20 nm |
| C. | 30 nm |
| D. | 40 nm |
| Answer» C. 30 nm | |
| 730. |
Kangaroo rat most probably would be found in___________? |
| A. | Tropical rain forest |
| B. | Tundra |
| C. | Grass land |
| D. | Desert |
| Answer» E. | |
| 731. |
For which of the following no preventive vaccine is available? |
| A. | HAV |
| B. | HBV |
| C. | HCV |
| D. | HEV |
| Answer» D. HEV | |
| 732. |
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 | |
| 733. |
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 | |
| 734. |
Mode of transmission of hepatitis A is__________? |
| A. | Serum |
| B. | Faeco-oral |
| C. | Sexual contact |
| D. | All of these |
| Answer» C. Sexual contact | |
| 735. |
Which one of the following specially result in chronic liver disease leading to hepatic failure: |
| A. | HAV |
| B. | HBV |
| C. | HCV |
| D. | HEV |
| Answer» D. HEV | |
| 736. |
An enzyme which can convert single stranded RNA into double stranded viral DNA is called____________? |
| A. | DNAase |
| B. | RNAase |
| C. | DNA polymerase |
| D. | Reverse Transcriptase |
| Answer» E. | |
| 737. |
Magnesium is present in which of the following__________________? |
| A. | Cytochromes |
| B. | ATP |
| C. | Chlorophyll |
| D. | Haemoglobin |
| Answer» D. Haemoglobin | |
| 738. |
The agent of controversial nature causing mad cow infection is_____________? |
| A. | Bacteria |
| B. | Cowpox Virus |
| C. | Adenovirus |
| D. | Prion |
| Answer» E. | |
| 739. |
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 | |
| 740. |
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 | |
| 741. |
Which of the following virus has special affiliations with the tumor production: |
| A. | Hepatitis virus |
| B. | Retrovirus |
| C. | Polio virus |
| D. | Pox virus |
| Answer» C. Polio virus | |
| 742. |
Puccinia commonly destroys______________? |
| A. | Corn |
| B. | Tomato |
| C. | Dodder |
| D. | Wheat |
| Answer» E. | |
| 743. |
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 | |
| 744. |
Deficiency of which of the following causes chlorosis__________________? |
| A. | Nitrogen |
| B. | Magnesium |
| C. | Iron |
| D. | Both A and B |
| Answer» E. | |
| 745. |
Tobacco mosaic virus is__________? |
| A. | Spherical |
| B. | Rod Shaped |
| C. | Tadpole like |
| D. | Hexagonal |
| Answer» C. Tadpole like | |
| 746. |
Which of the following disease results in Paralysis due to viral attack on C.N.S: |
| A. | Measles |
| B. | Herpes simplex |
| C. | Hepatitis |
| D. | Polio |
| Answer» E. | |
| 747. |
Mastication is carried out by__________? |
| A. | Teeth |
| B. | Tongue |
| C. | Smooth muscles |
| D. | All of these |
| Answer» B. Tongue | |
| 748. |
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. | |
| 749. |
Dipeptides into amino acids are are converted through_____________? |
| A. | Amino peptidase |
| B. | Erypsin |
| C. | Pepsin |
| D. | Trypsin |
| Answer» C. Pepsin | |
| 750. |
Which of the following is an RNA virus: |
| A. | Influenza virus |
| B. | Herpes virus |
| C. | HBV |
| D. | Pox virus |
| Answer» B. Herpes virus | |