General Science Questions (MCQs) for Competitive Examinations

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It is generally considered that the Panda belongs to the bear family, though differences persist. Some DNA studies have shown that the giant panda is closer to the bear family while the red panda is indeed closer to the raccoon family.

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Vitamin K is a group of structurally similar, fat-soluble vitamins that are needed for the post translational modification of certain proteins required for blood coagulation i.e. conversion of fibrinogen into fibrin, the blood clot. and in metabolic pathways in bone and other tissue. They are 2-methyl-1,4- naphthoquinone (3-)derivatives. This group of vitamins includes two natural vitamins: vitamin K1 and vitamin K2. Vitamin K1, also known as phylloquinone, phytomenadione, or phytonadione, is synthesized by plants, and is found in highest amounts in green leafy vegetables because it is directly involved in photosynthesis. It may be thought of as the “plant form” of vitamin K. It is active in animals since animals can easily convert it to vitamin K2.

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Haemophilia is a group of hereditary genetic disorders that impairs the body’s ability to control blood clotting, which is used to stop bleeding when a blood vessel is broken. It is a sex-linked recessive disorder which is more likely to occur in males than females.

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Crocodiles are large aquatic reptiles, while frogs are short-bodied, tailless amphibians that inhabit terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Tiger, the largest cat species, is a mammal.

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Early blight and late blight are two serious diseases of potato and tomato. Early blight of potato is caused by the fungus, Alternaria solani. The pathogen produces distinctive “bulls-eye” patterned leaf spots and can cause tuber blight on potato. This disease, also known as target spot, rarely affects young, vigorously growing plants. It is found on older leaves first.

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More than one option is correct. Jatropha curcas is known for its insecticidal, pesticidal and fungicidal properties. It is used in rural Bengal for dhobi itch (a common fungal infection of the skin). Pesticidal properties have also been reported from Pongamia Pinnata (Karanja) especially against nematodes.

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Sugar, or table sugar, is also known as sucrose. There are actually many different types of sugars – glucose, galactose, fructose and lactose are all sugars, along with sucrose. A more complex example is sucrose (table sugar), which is 42.11% carbon, 6.48% hydrogen, and 51.41% oxygen by mass. Sucrose is made up of one molecule of glucose and one molecule of fructose joined together.

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Bariatric surgical procedures cause weight loss by restricting the amount of food the stomach can hold, causing malabsorption of nutrients, or by a combination of both gastric restriction and malabsorption. The most common bariatric surgery procedures are gastric bypass, sleeve gastrectomy, adjustable gastric band, and biliopancreatic diversion with duodenal switch. Gastric bypass and other weight-loss surgeries make changes to digestive system.

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AIDS virus destroys the T-cells inside of the immune system. T cells or T lymphocytes belong to a group of white blood cells known as lymphocytes, and play a central role in cell-mediated immunity.

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Edward Jenner introduced the vaccine for smallpox. Smallpox was an infectious disease caused by one of two virus variants, Variola major and Variola minor. In 1980, the World Health Organization declared smallpox an eliminated disease.