MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 1212 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 751. |
Insulin is a human__________? |
| A. | Gene |
| B. | Protein |
| C. | Glucose |
| D. | Diabetes |
| Answer» C. Glucose | |
| 752. |
Insulin and glucagons are __________ in nature. |
| A. | Protein |
| B. | Amino acid derivative |
| C. | Polypeptide |
| D. | Steroid |
| Answer» B. Amino acid derivative | |
| 753. |
Insufficient secretion of iodothyroxine in adults causes____________? |
| A. | Myxedema |
| B. | Cretinism |
| C. | Goiter |
| D. | Exopthalmic goiter |
| Answer» B. Cretinism | |
| 754. |
Insertion of Biceps is on_________? |
| A. | Ulna |
| B. | Radius |
| C. | Olecronon process of ulna |
| D. | Scapula |
| Answer» C. Olecronon process of ulna | |
| 755. |
Insects responsible for transmitting diseases are called___________? |
| A. | Drones |
| B. | Vectors |
| C. | Hybirds |
| D. | None of these |
| Answer» C. Hybirds | |
| 756. |
Inner layers of the sponges are made up of__________? |
| A. | Pinacocytes |
| B. | Choanoderm |
| C. | Choanoytes |
| D. | Pinacoderm |
| Answer» D. Pinacoderm | |
| 757. |
Initial pH of food vacuole during digestion in amoeba is____________? |
| A. | 5.3 |
| B. | 5.6 |
| C. | 7.3 |
| D. | 7.6 |
| Answer» C. 7.3 | |
| 758. |
Inhibitors which block the enzyme by forming weak bond are called___________? |
| A. | Competitive inhibitors |
| B. | Non-competitive inhibitors |
| C. | Irreversible inhibitors |
| D. | Both a and b |
| Answer» E. | |
| 759. |
Ingestion of some water with food in Amoeba takes place by the process of ______ ? |
| A. | Endosmosis |
| B. | Pinocytosis |
| C. | Phagocytosis |
| D. | None of these |
| Answer» D. None of these | |
| 760. |
Ingestion of bacteria by certain type of cells is termed as ________ ? |
| A. | Acclimatization |
| B. | Agglutination |
| C. | Paralysis |
| D. | Phagocytosis |
| Answer» E. | |
| 761. |
Incomplete or imperfect digestion is known as________? |
| A. | Obesity |
| B. | Dyspepsia |
| C. | Anorexia nervous |
| D. | Bulimia nervosa |
| Answer» C. Anorexia nervous | |
| 762. |
In which phase of cell cycle cell organelles are formed? |
| A. | S Phase |
| B. | G1 Phase |
| C. | G2 Phase |
| D. | G0 Phase |
| Answer» D. G0 Phase | |
| 763. |
In which of the following pigments major energy reserves and cell wall are like plants? |
| A. | Rhodophyta |
| B. | Chlorophyta |
| C. | Phaeophyta |
| D. | Chrysophyta |
| Answer» C. Phaeophyta | |
| 764. |
In which of the following neurons length of dendrite is greater than axon_______________? |
| A. | Sensory neuron |
| B. | Motor neuron |
| C. | Associative neuron |
| D. | none of these |
| Answer» B. Motor neuron | |
| 765. |
In which of the following location enzymes controlling cellular respiration are present____________? |
| A. | Nucleus |
| B. | Chlorophast |
| C. | Milochondria |
| D. | Ribosome |
| Answer» D. Ribosome | |
| 766. |
In which of the following joint muscles are arranged in the same plane as that of joint? |
| A. | Between radius and ulna |
| B. | Between ulna and scapula |
| C. | Between humerus and scapula |
| D. | Between femur and tibia |
| Answer» E. | |
| 767. |
In which of the following example of fungi dikaryotic hyphae exist for long period? |
| A. | Deuteromycota |
| B. | Basidiomycota |
| C. | Zygomycota |
| D. | All of these |
| Answer» C. Zygomycota | |
| 768. |
In which of the following component of the body, lactic acid fermentation takes place? |
| A. | Brain |
| B. | Heart |
| C. | Liver |
| D. | Muscles |
| Answer» E. | |
| 769. |
In which group of tracheophytes ovules are born on the exposed surface of megasporophylls______________? |
| A. | Spheospsida |
| B. | Filicineae |
| C. | Gymnosperms |
| D. | Angiosperms |
| Answer» D. Angiosperms | |
| 770. |
in which cell ribosome are of large size and present either on endoplasmic reticulum or free in cytoplasm? |
| A. | prokaryotic |
| B. | eukaryotic |
| C. | both |
| D. | all the above |
| Answer» C. both | |
| 771. |
In which animal respiratory surface are found in more than one organ? |
| A. | birds |
| B. | human |
| C. | fish |
| D. | frog |
| Answer» E. | |
| 772. |
In Urea cycle __________ ammonia molecules combine with 1 CO2 molecule to form 1 molecule of urea. |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 773. |
In the root cells _______ pathway becomes discontinuous in the endodermis due to the presence of casparian strip. |
| A. | Tonoplast |
| B. | Apoplast |
| C. | Symplast |
| D. | Vacuolar |
| Answer» C. Symplast | |
| 774. |
In the lytic cycle of bacteriophage the host DNA is__________? |
| A. | Replicated |
| B. | Turn off by the protein coat |
| C. | Digested into its nucleotides |
| D. | Turned on by the removal of the protein coat |
| Answer» D. Turned on by the removal of the protein coat | |
| 775. |
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 | |
| 776. |
In term of spore production Selaginella is characterized by________________? |
| A. | Homosporous |
| B. | Hetrosporous |
| C. | Both depending upon the conditions |
| D. | None of these |
| Answer» C. Both depending upon the conditions | |
| 777. |
In sponges fertilization takes place in____________? |
| A. | Ectoderm |
| B. | Mesenchyme |
| C. | Endoderm |
| D. | Uterus |
| Answer» C. Endoderm | |
| 778. |
In some cases the blastomere can produce complete embryo the cleavage will be___________? |
| A. | Spiral and determinate |
| B. | Radial and indeterminate |
| C. | Spiral and indeterminate |
| D. | Radial and determinate |
| Answer» C. Spiral and indeterminate | |
| 779. |
In slime molds spores develop into__________? |
| A. | Swarm cells |
| B. | Biflagellated cells |
| C. | Amoeboid reproductive cells |
| D. | All of these |
| Answer» E. | |
| 780. |
In plants, the neighbouring cells are connected with one another by__________? |
| A. | Plasmodesmata |
| B. | Cell walls |
| C. | Vacuoles |
| D. | Both ‘A’ & ‘B’ |
| Answer» E. | |
| 781. |
In plants, which of the following is a waste product produced both during photosynthesis and respiration? |
| A. | CO2 |
| B. | H2O |
| C. | O2 |
| D. | Both A and B |
| Answer» C. O2 | |
| 782. |
In plants, water potential is determined by major factors? |
| A. | Three |
| B. | Four |
| C. | Two |
| D. | Five |
| Answer» D. Five | |
| 783. |
In plants there are_______basic types of tissues? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | None of these |
| Answer» C. 4 | |
| 784. |
In planaria, numerous small branches which end blindly are called as__________? |
| A. | Digestive tract |
| B. | Intestinal caeca |
| C. | Hepatic caeca |
| D. | Both B & C |
| Answer» C. Hepatic caeca | |
| 785. |
In osmosis water molecules move from area of _____________ through semipermeable memberane? |
| A. | Higher solute concentration to lower solute concentration |
| B. | Lower solute concentration to higher solute concentration |
| C. | Lower solvent concentration to higher solvent concentration |
| D. | All of these |
| Answer» C. Lower solvent concentration to higher solvent concentration | |
| 786. |
In mouth cavity of many molluscs there is a rasping tongue like structure_________provided with many horny teeth. |
| A. | Ligule |
| B. | Radula |
| C. | Mantle |
| D. | Muscle |
| Answer» C. Mantle | |
| 787. |
In most triploblasts after embryonic development the three layers are represented as___________? |
| A. | Separate layers of cells |
| B. | Structures formed from them |
| C. | Structures associated with them |
| D. | Their functions in body |
| Answer» C. Structures associated with them | |
| 788. |
In most ecosystems the greatest amount of energy flows through the____________? |
| A. | Secondary consumers |
| B. | Herbivores |
| C. | Carnivores |
| D. | Decomposers |
| Answer» C. Carnivores | |
| 789. |
In most birds air sacs are ____________ in number? |
| A. | 10 |
| B. | 3 |
| C. | 4 |
| D. | 9 |
| Answer» E. | |
| 790. |
In many which phylum the body of an organisms is usually divided in there regions called head, thorax and abdomen? |
| A. | Arthropods |
| B. | Chordata |
| C. | Annelida |
| D. | Echinodermata |
| Answer» B. Chordata | |
| 791. |
In lysogenic cycle the process of spearation of phage DNA from the hosts chromosome and initiation of lytic cycle is called______________? |
| A. | Lysis |
| B. | Lysogeny |
| C. | Induction |
| D. | Adsorption |
| Answer» D. Adsorption | |
| 792. |
In living organisms the lubricant which provides protection against damage resulting from friction is___________? |
| A. | Carbohydrates |
| B. | Fatty acid |
| C. | Water |
| D. | Protein |
| Answer» D. Protein | |
| 793. |
In life cycle of Pinus megaspores produced by megasporangium divide into 4 megaspores by__________________? |
| A. | Mitosis |
| B. | Meiosis |
| C. | Both depending upon the conditions |
| D. | None of these |
| Answer» C. Both depending upon the conditions | |
| 794. |
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. | |
| 795. |
In humans the number of tetrads formed during mitosis is___________? |
| A. | 23 |
| B. | 46 |
| C. | 0 |
| D. | 4 |
| Answer» D. 4 | |
| 796. |
In human female, fertilization commonly occurs at______________? |
| A. | Proximal part of oviduct |
| B. | Distal part of oviduct |
| C. | Uterus |
| D. | Cervix |
| Answer» B. Distal part of oviduct | |
| 797. |
In human body 99% of total mass is formed of_____________? |
| A. | 16 Bio-elements |
| B. | 12 Bio-elements |
| C. | 10 Bio-elements |
| D. | 6 Bio-elements |
| Answer» E. | |
| 798. |
In human beings influenza is caused by_________? |
| A. | bacteria |
| B. | protist |
| C. | virus |
| D. | fungi |
| Answer» D. fungi | |
| 799. |
In Hornworts the band of meristematic tissue is found near_____________? |
| A. | Foot |
| B. | Gamete producing region |
| C. | Spore producing region |
| D. | At junction of A & B |
| Answer» E. | |
| 800. |
In Homo Sapiens (Human) the fertilization occurs in the___________? |
| A. | Uterus |
| B. | Ovaries |
| C. | Oviduct |
| D. | Cervix |
| Answer» D. Cervix | |