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MCQOPTIONS
This section includes 1412 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 801. |
Sexual reproduction in Algae that takes place through fusion of two dissimilar size gametes is called? |
| A. | Zoospores |
| B. | Anisogamous |
| C. | Isogamous |
| D. | Oogamous |
| Answer» C. Isogamous | |
| 802. |
Self pollination will lead to |
| A. | Inbreeding |
| B. | Over breeding |
| C. | Outbreeding |
| D. | Rare breeding |
| Answer» B. Over breeding | |
| 803. |
Select the correct statement about the ureters. |
| A. | The ureter is innervated by parasympathetic nerve endings only. |
| B. | Ureters contain sphincters at the entrance to the bladder to prevent the backflow of urine. |
| C. | The epithelium is stratified squamous like the skin, which allows a great deal of stretch. |
| D. | The ureters are capable of peristalsis like that of the gastrointestinal tract. |
| Answer» E. | |
| 804. |
Select the correct statement contrasting gametophytes and sporophytes. |
| A. | Sporophytes are diploid, whereas gametophytes are haploid. |
| B. | Sporophytes are vascular, whereas gametophytes are nonvascular. |
| C. | Sporophytes are larger than gametophytes. |
| D. | All of the above |
| Answer» B. Sporophytes are vascular, whereas gametophytes are nonvascular. | |
| 805. |
Select the correct statement about the uterine cycle. |
| A. | During the secretory phase, estrogen levels are at their highest. |
| B. | During the proliferative phase, levels of progesterone rise as the follicle begins to produce more hormone. |
| C. | If fertilization occurs, the corpus luteum is maintained by a hormone secreted by the developing embryo. |
| D. | The menstrual phase of the cycle is from day 1 to day 8. |
| Answer» D. The menstrual phase of the cycle is from day 1 to day 8. | |
| 806. |
Select the correct statement about the pharynx. |
| A. | The auditory tube drains into the nasopharynx |
| B. | The laryngopharynx blends posteriorly into the nasopharynx |
| C. | The palatine tonsils are embedded in the lateral walls of the nasopharynx |
| D. | The pharyngeal tonsil is located in the laryngopharynx |
| Answer» B. The laryngopharynx blends posteriorly into the nasopharynx | |
| 807. |
Select the correct statement about photosynthesis by primary producers. |
| A. | Photosynthetic protists and prokaryotes Carry out the majority of the photosynthesis in aquatic communities. |
| B. | Land plants carry out over 80% of the world's photosynthesis. |
| C. | Cyanobacteria carry out more of the world's photosynthesis than protist do. |
| D. | All of the above |
| Answer» B. Land plants carry out over 80% of the world's photosynthesis. | |
| 808. |
Select the correct statement about the Heart Valves. |
| A. | Aortic and pulmonary valves control the flow of blood into the heart. |
| B. | The AV valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur. |
| C. | The tricuspid valve divides the left atrium from the left ventricle. |
| D. | The mitral valve separates the right atrium from the right ventricle. |
| Answer» C. The tricuspid valve divides the left atrium from the left ventricle. | |
| 809. |
Select the correct statement about lymphocytes. |
| A. | Lymph transport is faster than that occurring in veins |
| B. | Lymph transport depends on the movement of adjacent tissues, such as skeletal muscles |
| C. | Lymph transport is only necessary when illness causes tissue swelling |
| D. | Under normal conditions, lymph vessels are very high-pressure conduits |
| Answer» C. Lymph transport is only necessary when illness causes tissue swelling | |
| 810. |
Select the correct statement about oxygen transport in blood |
| A. | A 50% oxygen saturation level of blood returning to the lungs might indicate an activity level higher than normal |
| B. | During normal activity, a molecule of hemoglobin returning to the lungs carries one molecule of O2 |
| C. | During conditions of acidosis, hemoglobin is able to carry oxygen more efficiently |
| D. | Increased BPG levels in the red blood cells enhance oxygen-carrying capacity |
| Answer» C. During conditions of acidosis, hemoglobin is able to carry oxygen more efficiently | |
| 811. |
Select the correct statement about immune system? |
| A. | The causative agent in acquired immune deficiency syndrome (AIDS) is a virus that recognizes CD4 proteins |
| B. | The most common form of immunodeficiency is graftÂversusÂhost (GVH) disease |
| C. | Severe combined immunodeficiency (SCID) disease is an acquired condition |
| D. | Hodgkin's disease is a hereditary immunodeficiency found in children |
| Answer» B. The most common form of immunodeficiency is graftÂversusÂhost (GVH) disease | |
| 812. |
Select the correct statement about cellular respiration? |
| A. | All the carbon atoms in glucose ultimately incorporated during cellular respiration into carbon dioxide molecule |
| B. | All the carbon atoms in glucose ultimately incorporated during cellular respiration into NADH molecule |
| C. | All the carbon atoms in glucose ultimately incorporated during cellular respiration into ATP molecule |
| D. | All the carbon atoms in glucose ultimately incorporated during cellular respiration into water molecule |
| Answer» B. All the carbon atoms in glucose ultimately incorporated during cellular respiration into NADH molecule | |
| 813. |
Select the correct statement about active and passive immunity. |
| A. | A vaccination is an example of the introduction of passive immunity into the body |
| B. | Active and passive humoral immunity are both mechanisms of adaptive immunity that useantibodies |
| C. | Immunological memory is established by passive immunization |
| D. | The antibodies utilized in active immunity are acquired from another organism |
| Answer» C. Immunological memory is established by passive immunization | |
| 814. |
Secondary consumers are eaten by larger |
| A. | fast animal |
| B. | animal in the third trophic level |
| C. | herbivorous animal |
| D. | predator |
| Answer» E. | |
| 815. |
Scientist who discovered blood groups |
| A. | Krebs |
| B. | Pavlov |
| C. | Karl Landsteiner |
| D. | Darwin |
| Answer» D. Darwin | |
| 816. |
Salts and sugars work to preserve foods by creating a |
| A. | Hypertonic environment |
| B. | Lower pH |
| C. | Depletion of nutrients |
| D. | Lower osmotic pressure |
| Answer» B. Lower pH | |
| 817. |
Salivary amylase breaks down ______. |
| A. | protein |
| B. | water |
| C. | starch |
| D. | fats |
| Answer» D. fats | |
| 818. |
Rubella diseases is described first by the scientist |
| A. | Abu Baqre |
| B. | Ronald Ross |
| C. | Laveris |
| D. | Darwin |
| Answer» B. Ronald Ross | |
| 819. |
RNA is a polymeric molecule. What does RNA stand for? |
| A. | Rado Nuclear Acid |
| B. | Ribo Nucleic Acid |
| C. | Rhino Nuclear Acid |
| D. | Resto Nucleus Acid |
| Answer» C. Rhino Nuclear Acid | |
| 820. |
Ringworm is a disease caused by |
| A. | Fungi |
| B. | Bacteria |
| C. | Virus |
| D. | Flies |
| Answer» B. Bacteria | |
| 821. |
Rhinitis is the disease that effects which body part? |
| A. | Brain |
| B. | Nose |
| C. | Blood |
| D. | Skin |
| Answer» C. Blood | |
| 822. |
Rickets is caused due to the deficiency of |
| A. | Vitamin D |
| B. | Vitamin A |
| C. | Vitamin B |
| D. | Vitamin C |
| Answer» B. Vitamin A | |
| 823. |
Reuptake refers to the |
| A. | reabsorption of excess neurotransmitter molecules by a sending neuron |
| B. | release of hormones into the bloodstream |
| C. | movement of neurotransmitter molecules across a synaptic gap |
| D. | inflow of myelin through an axon membrane |
| Answer» B. release of hormones into the bloodstream | |
| 824. |
Retinol is mainly related to ___. |
| A. | Vitamin A |
| B. | Vitamin B |
| C. | Vitamin D |
| D. | Vitamin E |
| Answer» B. Vitamin B | |
| 825. |
Reproducing new plants by cells instead of vegetative parts or seeds is called |
| A. | tissue culture |
| B. | regeneration |
| C. | multiple fission |
| D. | binary fission |
| Answer» B. regeneration | |
| 826. |
REM sleep is also known as paradoxical sleep because |
| A. | Measures of the brain activity closely resemble waking consciousness, but the person is incapable of moving. |
| B. | The person can have night terrors during this stage but will not remember them in the morning. (E) Th e person's vital signs are very slow, but the person can get up and walk around |
| C. | Measures of the brain activity closely resemble waking consciousness, but the person is in the deepest stage of sleep. |
| D. | The person's heart rate is slower than when awake, but the person can sleepwalk or sleep talk. |
| Answer» B. The person can have night terrors during this stage but will not remember them in the morning. (E) Th e person's vital signs are very slow, but the person can get up and walk around | |
| 827. |
REM behavior disorder results from |
| A. | sleep |
| B. | walking |
| C. | watching |
| D. | All of the above |
| Answer» B. walking | |
| 828. |
Reflex actions are controlled by |
| A. | The Spinal Chord |
| B. | The Nerves |
| C. | The cells |
| D. | The Brain |
| Answer» B. The Nerves | |
| 829. |
Receptors for hearing are located in the |
| A. | Vestibule |
| B. | Tympanic membrane |
| C. | Semicircular canals |
| D. | Cochlea |
| Answer» E. | |
| 830. |
Read the following and the question based on it._x005F_x000D_ Proteins are used by the body for energy, metabolism, gene growth and maintenance 10 to 35 percent of the daily calorie intake should ideally consist of proteins. they are found in all cells of the body. Hair and nail are made up of a protein called Keratin, having sulphur bonds. curlier hair has more sulphur links. Too much intake of proteins can sometimes lead to body weight._x005F_x000D_ Proteins____________x005F_x000D_ |
| A. | Are not used by the body for any of its functions |
| B. | Are required by the body in adequate quantities |
| C. | Makes hair shiny,lengthy and black. |
| D. | Do not cause weight gain. |
| Answer» C. Makes hair shiny,lengthy and black. | |
| 831. |
RBCs are formed in the ____________ in the adults. |
| A. | blue bone marrow |
| B. | red bone marrow |
| C. | white bone marrow |
| D. | black bone marrow |
| Answer» C. white bone marrow | |
| 832. |
Radish is an example of |
| A. | bulb |
| B. | root |
| C. | tuber |
| D. | fruit |
| Answer» C. tuber | |
| 833. |
Psidium guajava is the scientific name of ___________. |
| A. | Guava |
| B. | Mango |
| C. | Bamboo |
| D. | Jack fruit |
| Answer» B. Mango | |
| 834. |
Protists and bacteria are grouped into different domains because |
| A. | protists have a membrane-bounded nucleus, which bacterial cells lack. |
| B. | protists eat bacteria |
| C. | bacteria decompose protists |
| D. | protists are photosynthetic |
| Answer» B. protists eat bacteria | |
| 835. |
Prothrombin, responsible for clotting of blood is released by_____. |
| A. | Small Intestine |
| B. | Blood Platelets |
| C. | Large Intestine |
| D. | Heart |
| Answer» C. Large Intestine | |
| 836. |
Proteins are polymers formed from |
| A. | carbohydrates |
| B. | amino acids |
| C. | nucleic acids |
| D. | lipids |
| Answer» C. nucleic acids | |
| 837. |
Prostate in human body is a |
| A. | Connective tissue |
| B. | Gland |
| C. | Membrane |
| D. | Muscle |
| Answer» C. Membrane | |
| 838. |
Prostate gland is present below |
| A. | the urinary bladder |
| B. | the kidneys |
| C. | the scrotum |
| D. | the penis |
| Answer» B. the kidneys | |
| 839. |
Produces a usable form of energy for the cell |
| A. | Lysosomes |
| B. | Vacuoles |
| C. | Mitochondria |
| D. | Ribosomes |
| Answer» D. Ribosomes | |
| 840. |
Process occurs in cytoplasm |
| A. | Glycolysis |
| B. | Cell division |
| C. | Both A & B |
| D. | None of the above |
| Answer» D. None of the above | |
| 841. |
Primary growth in plants occurs by_x005F_x000D_ A. Vertical meristem_x005F_x000D_ B. Lateral meristem_x005F_x000D_ C. Intercalary meristem_x005F_x000D_ D. Apical meristem_x005F_x000D_ |
| A. | C & D |
| B. | A, B & D |
| C. | A, B, C & D |
| D. | B, C & D |
| Answer» B. A, B & D | |
| 842. |
Pressure, pain, and temperature receptors in the skin are |
| A. | Exteroceptors |
| B. | Proprioceptors |
| C. | Interoceptors |
| D. | Mechanoreceptors |
| Answer» B. Proprioceptors | |
| 843. |
Potato, tomato and brinjal are three different species but all belong to which genus? |
| A. | Solanum |
| B. | Panthera |
| C. | Felis |
| D. | Tigris |
| Answer» B. Panthera | |
| 844. |
Presence of large amounts of nutrients in waters also causes excessive growth of _________ algae. |
| A. | Biomagnification |
| B. | Algal bloom |
| C. | planktonic |
| D. | Eutrophication |
| Answer» D. Eutrophication | |
| 845. |
Prawns belong to which family? |
| A. | Crustaceans |
| B. | Fish |
| C. | Amphibians |
| D. | Reptiles |
| Answer» B. Fish | |
| 846. |
Polyploidy is involved in which of the following examples? |
| A. | XYY males |
| B. | Some plants alternate between haploid and diploid phases |
| C. | XO females |
| D. | A normal watermelon has 22 chromosomes but seedless watermelons have 33 chromosomes |
| Answer» E. | |
| 847. |
Polyploidy arises due to change in the |
| A. | number of chromatids |
| B. | structure of genes |
| C. | number of chromosomes |
| D. | structure of chromosomes |
| Answer» D. structure of chromosomes | |
| 848. |
Polynucleotide chain of DNA contains |
| A. | a nitrogenous base, deoxyribose sugar and phosphate group |
| B. | a nitrogenous base, ribose sugar and phosphate group |
| C. | deoxyribose sugar, ribose sugar and phosphate group |
| D. | a nitrogenous base and phosphate group only |
| Answer» B. a nitrogenous base, ribose sugar and phosphate group | |
| 849. |
Pollination is best defined as |
| A. | growth of pollen tube in ovule |
| B. | visiting flowers by insects |
| C. | germination of pollen grains |
| D. | transfer of pollen from anther to stigma |
| Answer» E. | |
| 850. |
Pollen is produced by the process of |
| A. | Mitosis |
| B. | Pollination |
| C. | Meiosis |
| D. | Fertilization |
| Answer» B. Pollination | |