MCQOPTIONS
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MCQOPTIONS
This section includes 125 Mcqs, each offering curated multiple-choice questions to sharpen your O Level Physics knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Packets of light energy are called as |
| A. | photons |
| B. | peptones |
| C. | none of these |
| D. | peptides |
| Answer» B. peptones | |
| 52. |
In adults, hypothyroidism results in |
| A. | excess sleep |
| B. | less appetite |
| C. | hyperactivity |
| D. | feelings of sluggishness |
| Answer» E. | |
| 53. |
Postum is a replacement of |
| A. | caffeine |
| B. | nicotine |
| C. | penicillin |
| D. | alcohol |
| Answer» B. nicotine | |
| 54. |
Each hypha is divided into |
| A. | few cells |
| B. | many cells |
| C. | XX |
| D. | no cell |
| Answer» E. | |
| 55. |
In adverse conditions, bacteria |
| A. | start copying the DNA |
| B. | start dividing |
| C. | all of these |
| D. | form a thick walled spore |
| Answer» E. | |
| 56. |
Use of fossil fuels causes |
| A. | conservation of resources |
| B. | pollution |
| C. | XX |
| D. | XX |
| Answer» C. XX | |
| 57. |
Vitamin D can also be called as |
| A. | calciferol |
| B. | ascorbic acid |
| C. | both of these |
| D. | none of these |
| Answer» B. ascorbic acid | |
| 58. |
Skin gets its characteristic color due to |
| A. | cornified layer |
| B. | dermis |
| C. | malpighian layer |
| D. | granular layer |
| Answer» D. granular layer | |
| 59. |
Condensation of glucose molecules results in |
| A. | cellulose |
| B. | starch |
| C. | both of these |
| D. | none of these |
| Answer» D. none of these | |
| 60. |
Chitin is a form of |
| A. | complex DNA |
| B. | complex peptone |
| C. | complex carbohydrates |
| D. | complex plasmids |
| Answer» D. complex plasmids | |
| 61. |
In order to increase the rate of reaction, |
| A. | the limiting factor shall decrease |
| B. | the limiting factor shall increase |
| C. | none of these |
| D. | the substrate concentration shall be increased |
| Answer» B. the limiting factor shall increase | |
| 62. |
The purpose of the cooling jacket is to |
| A. | help in easy cleansing of culture medium |
| B. | prevent heavy financial losses |
| C. | help in utilizing unproductive time |
| D. | help in easy cleaning of culture medium |
| Answer» B. prevent heavy financial losses | |
| 63. |
Garlic is an example of |
| A. | corm |
| B. | Rhizome |
| C. | bulb |
| D. | stem tuber |
| Answer» D. stem tuber | |
| 64. |
Due to osmotic problems in freshwater bony fish, kidneys |
| A. | have to reabsorb water |
| B. | have to produce concentrated urine |
| C. | XX |
| D. | have to produce dilute urine |
| Answer» E. | |
| 65. |
Biosensors contains |
| A. | metal sensing devices |
| B. | immobilized enzymes |
| C. | a bar code sensing device |
| D. | mobilized enzymes |
| Answer» C. a bar code sensing device | |
| 66. |
During respiration, the carbon dioxide is |
| A. | released in the environment |
| B. | produced |
| C. | XX |
| D. | XX |
| Answer» B. produced | |
| 67. |
In order to digest polypeptides, they are converted into |
| A. | fiber |
| B. | glucose |
| C. | polypeptides |
| D. | amino acids |
| Answer» E. | |
| 68. |
Vitamin D can be created from a natural substance under the skin called as |
| A. | Ergosterol |
| B. | Estrogen |
| C. | pernicious |
| D. | pellagra |
| Answer» B. Estrogen | |
| 69. |
During photosynthesis, enzymes play a part in |
| A. | light independent stage |
| B. | light dependent stage |
| C. | none of these |
| D. | both of these |
| Answer» B. light dependent stage | |
| 70. |
Nectar secreted by the Clitoria can be reached through the |
| A. | female part (gynoecium) |
| B. | petals |
| C. | at the base of the male part (androecium) |
| D. | stigma only |
| Answer» D. stigma only | |
| 71. |
During breathing |
| A. | larynx is lowered and the windpipe is opened |
| B. | larynx is lowered, glottis is open |
| C. | larynx is raised and pharynx is shut |
| D. | larynx is raised and epiglottis blocks glottis |
| Answer» C. larynx is raised and pharynx is shut | |
| 72. |
Ovary, style and stigma form the |
| A. | corolla of the flower |
| B. | calyx of the flower |
| C. | XX |
| D. | carpel of the flower |
| Answer» E. | |
| 73. |
Oxidation does not involve |
| A. | addition of oxygen |
| B. | gain of electrons |
| C. | gain of energy |
| D. | loss of hydrogen |
| Answer» C. gain of energy | |
| 74. |
The higher the light wavelength, the |
| A. | lesser the energy of a photon |
| B. | more the energy of a photon |
| C. | none of these |
| D. | energy of photon depends upon the weather |
| Answer» B. more the energy of a photon | |
| 75. |
Anemia is caused due to |
| A. | deficiency of starch |
| B. | deficiency of proteins |
| C. | over-nutrition |
| D. | deficiency of iron |
| Answer» E. | |
| 76. |
Processed foods generally lack |
| A. | minerals |
| B. | fiber |
| C. | vitamins |
| D. | starch |
| Answer» D. starch | |
| 77. |
The functions of the adrenaline includes |
| A. | pupil dilation |
| B. | high metabolic rate |
| C. | all of these |
| D. | fast heart rate |
| Answer» D. fast heart rate | |
| 78. |
The sweat glands become less active if |
| A. | heat gain center of hypothalamus is activated |
| B. | if heat loos center of hypothalamus is activated |
| C. | none of these |
| D. | both of these |
| Answer» B. if heat loos center of hypothalamus is activated | |
| 79. |
Liver produces urea to remove |
| A. | excess hydrogen peroxide |
| B. | excess hydrogen |
| C. | excess starch |
| D. | excess nitrogen |
| Answer» E. | |
| 80. |
A thin, expanded lamina helps in the absorption of |
| A. | hydrogen |
| B. | oxygen |
| C. | carbon dioxide |
| D. | fresh nutrients |
| Answer» D. fresh nutrients | |
| 81. |
The lower flower in grass Iscaemum is |
| A. | unisexual |
| B. | dioecism |
| C. | three stamens |
| D. | bisexual |
| Answer» B. dioecism | |
| 82. |
The function of rectus muscles is to |
| A. | hold the eye in the depression in the skull |
| B. | help the eye blink |
| C. | XX |
| D. | attach the eye to the orbit |
| Answer» E. | |
| 83. |
Basal metabolic rate measures |
| A. | the time lapse between eating and passing stool |
| B. | how fast chemical reactions occur |
| C. | number of active sites |
| D. | number of enzymes required |
| Answer» C. number of active sites | |
| 84. |
Red blood cells do not |
| A. | transport oxygen |
| B. | lack nucleus |
| C. | produce antibodies |
| D. | lack hemoglobin |
| Answer» E. | |
| 85. |
Many nerve fibers bundle together to form |
| A. | myelin sheath |
| B. | axons |
| C. | node of Ranvier |
| D. | neurilemma |
| Answer» C. node of Ranvier | |
| 86. |
More selective reabsorption of water is carried out in kidneys of |
| A. | freshwater bony fish |
| B. | marine boneless fish |
| C. | all three |
| D. | marine bony fish |
| Answer» B. marine boneless fish | |
| 87. |
A weight reduction program shall not |
| A. | increase water intake |
| B. | increase protein intake |
| C. | increase intake of leafy vegetables |
| D. | increase intake of citrus fruits |
| Answer» C. increase intake of leafy vegetables | |
| 88. |
When the brain is viewed from above in man, the visible part of brain is |
| A. | Cerebral hemisphere |
| B. | medulla oblongata |
| C. | pituitary gland |
| D. | cerebellum |
| Answer» B. medulla oblongata | |
| 89. |
Nerve impulse transmitted towards the cell body is through |
| A. | axon |
| B. | dendrone |
| C. | XX |
| D. | neuron |
| Answer» C. XX | |
| 90. |
Photolysis is known to occur only in |
| A. | light independent stage |
| B. | light dependent stage |
| C. | none of these |
| D. | oxidation reaction |
| Answer» C. none of these | |
| 91. |
The saprophytes do not include |
| A. | virus |
| B. | fungi |
| C. | all of these |
| D. | bacteria |
| Answer» B. fungi | |
| 92. |
In addition to palisade tissues, chloroplast is also found in |
| A. | stoma |
| B. | cuticle cells |
| C. | stomata |
| D. | spongy tissues |
| Answer» E. | |
| 93. |
Malpighian capsule refers to the |
| A. | mass of blood capillaries |
| B. | renal capsule |
| C. | both of these |
| D. | none of these |
| Answer» D. none of these | |
| 94. |
All are the functions of the hypothalamus but |
| A. | regulation of anti-diuretic hormones |
| B. | regulation of body temperature |
| C. | regulation of blood osmotic pressure |
| D. | regulation of sleep and emotions |
| Answer» B. regulation of body temperature | |
| 95. |
Physical, mental abnormalities and risks of cancer are increased due to |
| A. | BOD |
| B. | DDT |
| C. | Greenhouse effect |
| D. | Dioxins |
| Answer» E. | |
| 96. |
The technique of inserting DNA into the plants is known as |
| A. | bio-fission |
| B. | bio injection |
| C. | bio diffusion |
| D. | bio genetic |
| Answer» B. bio injection | |
| 97. |
Homoeothermic refers to all but most |
| A. | nursing females |
| B. | mammals |
| C. | invertebrates |
| D. | hairy males |
| Answer» D. hairy males | |
| 98. |
Bacteria |
| A. | are in the form of pupa |
| B. | can be seen with naked eye |
| C. | can only be controlled through bacteriophages |
| D. | are larger than virus |
| Answer» E. | |
| 99. |
A simple reflex can be conditioned through |
| A. | inborne traits |
| B. | inheritance |
| C. | push ups |
| D. | some training |
| Answer» E. | |
| 100. |
The number of chromosomes in each cell except gametes in man are |
| A. | 28 |
| B. | 23 |
| C. | 48 |
| D. | 46 |
| Answer» E. | |