MCQOPTIONS
Saved Bookmarks
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.
| 651. |
Following possess bilateral symmetry as larva and radial symmetry as adult: |
| A. | Chordata |
| B. | Hydra |
| C. | Echinodermata |
| D. | Hemichordata |
| Answer» D. Hemichordata | |
| 652. |
A bond formed by linkage between -OH of carboxyl group of one amino acid and H of amino group of another amino acid which releases water is called__________? |
| A. | Phosphodiester linkage |
| B. | Glycosidic bond |
| C. | Peptide bond |
| D. | Hydrogen bond |
| Answer» D. Hydrogen bond | |
| 653. |
Proteins comprise of ___________% of the total dry weight of a cell? |
| A. | 40% |
| B. | 50% |
| C. | 60% |
| D. | 70% |
| Answer» C. 60% | |
| 654. |
Proteins are polymers of___________? |
| A. | Fatty acids |
| B. | Isoprenoid units |
| C. | Amino acids |
| D. | Nucleotides |
| Answer» D. Nucleotides | |
| 655. |
Adult birds normally possess only one functional____________? |
| A. | Ureter |
| B. | Ovary |
| C. | Lung |
| D. | Testis |
| Answer» C. Lung | |
| 656. |
Lipid molecules can store double amount of energy as compared to same amount of carbohydrate because of high number of__________________? |
| A. | C-C bonds |
| B. | C-H bonds |
| C. | C-N bonds |
| D. | C-O bonds |
| Answer» C. C-N bonds | |
| 657. |
Fatty acids containing 18 C atoms and a single double bond is____________? |
| A. | Saturated Fatty acid |
| B. | Unsaturated fatty acid |
| C. | Oleic Acid |
| D. | Plamitic acid |
| Answer» D. Plamitic acid | |
| 658. |
__________ is example of pure form of cellulose? |
| A. | Silk |
| B. | Wool |
| C. | Cotton |
| D. | Paper |
| Answer» D. Paper | |
| 659. |
One celled green ptotists are included in___________? |
| A. | Monera |
| B. | Algae |
| C. | Slime molds |
| D. | Plants |
| Answer» C. Slime molds | |
| 660. |
Pick the odd one out |
| A. | Psilophyton |
| B. | Rhynia |
| C. | Cooksonia |
| D. | Psilotum |
| Answer» E. | |
| 661. |
Which of the following statement is incorrect5 for fats containing unsaturated fatty acid_____________? |
| A. | They contain double bond |
| B. | They are usually solid at room temperature |
| C. | They are lighter than water |
| D. | Their specific gravity is less than 1 |
| Answer» C. They are lighter than water | |
| 662. |
Which one the following fatty acid is more soluble in an organic solvent and has higher melting point____________? |
| A. | Acetic acid |
| B. | Butyric acid |
| C. | Palmitic acid |
| D. | All have same |
| Answer» D. All have same | |
| 663. |
The unicellular organisms ingest large molecules into their cytoplasm from the external environment without previously digesting them. This process is called___________? |
| A. | Diffusion |
| B. | Osmosis |
| C. | Phagocytosis |
| D. | Plasmolysis |
| Answer» D. Plasmolysis | |
| 664. |
The one which is incorrect pair? |
| A. | Sori – Indusium |
| B. | Arthrophytes – Jointed |
| C. | Dichotomous – Vernation |
| D. | Lycopods – Ground pries |
| Answer» D. Lycopods – Ground pries | |
| 665. |
Mycoplasmas have been included in bacteria because: |
| A. | Do not have a cell wall |
| B. | Are heterotrophic |
| C. | Lack membrane bounded organelles |
| D. | Reproduce by binary fission |
| Answer» D. Reproduce by binary fission | |
| 666. |
The cell wall of oomycetes is chiefly composed of___________? |
| A. | Chitin |
| B. | Cellulose |
| C. | Lignin |
| D. | Proteins |
| Answer» C. Lignin | |
| 667. |
The one which can tolerate highest external osmotic pressure is __________? |
| A. | Algae |
| B. | Amoeba |
| C. | Fungi |
| D. | Bacteria |
| Answer» D. Bacteria | |
| 668. |
Peptide bond is_____________? |
| A. | C-N link |
| B. | C- O lind |
| C. | N-H link |
| D. | C-H link |
| Answer» B. C- O lind | |
| 669. |
A compound produced as a result of a chemical reaction of an alcohol with an acid in which water molecule is released is called________________? |
| A. | Monosaccharide |
| B. | Fatty acid |
| C. | Neutral lipid |
| D. | Nucleic acid |
| Answer» D. Nucleic acid | |
| 670. |
Lipids are soluble in which of the following_______________? |
| A. | Water |
| B. | Ether |
| C. | All solvents |
| D. | Not in any of the above |
| Answer» C. All solvents | |
| 671. |
All of the following veins carry deoxygenated blood except |
| A. | Superior vena cava |
| B. | Inferior vena cava |
| C. | Hepatic vein |
| D. | Pulmonary vein |
| Answer» E. | |
| 672. |
Animals obtain carbohydrates mainly from___________? |
| A. | Glucose |
| B. | Starch |
| C. | Sucrose |
| D. | Glycogen |
| Answer» C. Sucrose | |
| 673. |
Total number of amino acids in a hemoglobin molecule are__________? |
| A. | 554 |
| B. | 564 |
| C. | 574 |
| D. | 584 |
| Answer» D. 584 | |
| 674. |
Double fertilization occurs in_________? |
| A. | All plants |
| B. | All seed plants |
| C. | Gymnosperms |
| D. | Angiosperms |
| Answer» E. | |
| 675. |
The element in basic structure of proteins which differentiate them from carbohydrates________? |
| A. | C |
| B. | S |
| C. | H |
| D. | N |
| Answer» C. H | |
| 676. |
Which structure of protein gives information aboutnumber and sequence of amino acids in it_______________? |
| A. | Primary structure |
| B. | Secondary structure |
| C. | Tertiary structure |
| D. | Quaternary structure |
| Answer» B. Secondary structure | |
| 677. |
Which of the following is the empirical formula of chlorophyll b? |
| A. | C55H70O5N4Mg |
| B. | C55H72O6N4Mg |
| C. | C55H70O6N4Mg |
| D. | C55H72O5N4Mg |
| Answer» D. C55H72O5N4Mg | |
| 678. |
In Glycin an amino acid R group is replaced by____________? |
| A. | H |
| B. | CH3 |
| C. | COOH |
| D. | C = O |
| Answer» B. CH3 | |
| 679. |
An association in which fungal hyphae penetrate the outer cells of the plant root forming coils swellings and minute branches and also extend out into surrounding soil is called______________? |
| A. | Mycorrizael association |
| B. | Endomycorrhizae |
| C. | Ectomycorrhizae |
| D. | Lichen |
| Answer» C. Ectomycorrhizae | |
| 680. |
How many moles of carbon dioxide are produced by complete oxidation of one mole of puruvic acid? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 6 |
| Answer» D. 6 | |
| 681. |
Hemoglobin molecule exhibits which structural organization of proteins___________? |
| A. | Primary structure |
| B. | Secondary structure |
| C. | Tertiary structure |
| D. | Quaternary structure |
| Answer» E. | |
| 682. |
Hunger pangs usually begin ______ after the previous meal. |
| A. | 2-4 hours |
| B. | 6-8 hours |
| C. | 10-12 hours |
| D. | 12-24 hours |
| Answer» E. | |
| 683. |
If a plasmolysed plant cell is placed in water the cell will___________? |
| A. | Burst |
| B. | Be Killed |
| C. | Be deplasmolysed |
| D. | Show no change in it |
| Answer» D. Show no change in it | |
| 684. |
Locomotory structures are not found in which of the following group? |
| A. | Amoebas |
| B. | Zooflagellates |
| C. | Ciliates |
| D. | Apicomplexans |
| Answer» E. | |
| 685. |
Yeasts reproduce asexually by forming____________? |
| A. | Asci |
| B. | Basidia |
| C. | Both a & b |
| D. | Buds |
| Answer» E. | |
| 686. |
The simplest of oxygen producting photosynthetic organisms are____________? |
| A. | Algae |
| B. | Bacteria |
| C. | Cyanobacteria |
| D. | Chlamydomonas |
| Answer» D. Chlamydomonas | |
| 687. |
Amphoixus is a__________? |
| A. | Chordate |
| B. | Protochordate |
| C. | Lower chordate |
| D. | All of these |
| Answer» E. | |
| 688. |
Actin and myosin are the basic proteins involved in contractile machinery of our body to which type of proteins do they belong____________? |
| A. | Globular proteins |
| B. | Fibrous Proteins |
| C. | Both a and b |
| D. | None of these |
| Answer» C. Both a and b | |
| 689. |
Which structural organization is most common in globular proteins____________? |
| A. | Primary |
| B. | Secondary |
| C. | Tertiary |
| D. | Quaternary |
| Answer» D. Quaternary | |
| 690. |
Acromegaly is caused due to oversecretion of____________? |
| A. | STH |
| B. | TSH |
| C. | ACTH |
| D. | Thyroxin |
| Answer» E. | |
| 691. |
Insulin and glucagons are __________ in nature. |
| A. | Protein |
| B. | Amino acid derivative |
| C. | Polypeptide |
| D. | Steroid |
| Answer» B. Amino acid derivative | |
| 692. |
Which of the following does not show quaternary structure____________? |
| A. | Haemoglobin |
| B. | Pepsin |
| C. | Fibrin |
| D. | Insulin |
| Answer» D. Insulin | |
| 693. |
Animals fats are ______________ atroom temperature? |
| A. | Liquids |
| B. | Gases |
| C. | Solids |
| D. | None of these |
| Answer» D. None of these | |
| 694. |
ATP is a an important molecule for its major function___________? |
| A. | As an energy currency of the cell |
| B. | As a coenzyme |
| C. | Both a and b |
| D. | None of these |
| Answer» B. As a coenzyme | |
| 695. |
The first stage of development in which a cavity appears is the__________? |
| A. | Neurula |
| B. | Morula |
| C. | Gastrula |
| D. | Balastula |
| Answer» E. | |
| 696. |
The first organism of whose genome was completely discovered was____________? |
| A. | Human beings |
| B. | Influenza Virus |
| C. | Hemophilus Influenza |
| D. | None of these |
| Answer» D. None of these | |
| 697. |
The type of learning in which there is loss or decrease in response to repeated stimuli? |
| A. | Imprinting |
| B. | Habituation |
| C. | Latent learning |
| D. | Insight learning |
| Answer» C. Latent learning | |
| 698. |
Which statement correctly describes the transcription of DNA? |
| A. | It produces another DNA molecule |
| B. | It produces mRNA |
| C. | It is a semi conservation process |
| D. | It occurs at surface of ribosomes |
| Answer» C. It is a semi conservation process | |
| 699. |
Foliose lichen are_____________? |
| A. | Stem like |
| B. | Branching |
| C. | Leaf like |
| D. | Crust like |
| Answer» D. Crust like | |
| 700. |
Which one of the following syndrome is the result of meiotic non dysjunction? |
| A. | Klinefelters syndrome |
| B. | Turners syndrome |
| C. | Downs syndrome |
| D. | All of these |
| Answer» E. | |