Biology miscellaneous
- Adherent mucoid alkaline substance covering the inner lining of stomach is to :
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The continuous adherent mucus layer is also a barrier to luminal pepsin, thereby protecting the underlying mucosa from proteolytic digestion. The primary function of the adherent mucus gel layer is a structural one to create a stable, unstirred layer to support surface neutralization of acid and act as a protective physical barrier against luminal pepsin.
Correct Option: C
The continuous adherent mucus layer is also a barrier to luminal pepsin, thereby protecting the underlying mucosa from proteolytic digestion. The primary function of the adherent mucus gel layer is a structural one to create a stable, unstirred layer to support surface neutralization of acid and act as a protective physical barrier against luminal pepsin.
- What are the basic units from which human spare parts can be created?
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Stem cells are biological cells found in all multicellular organisms, that can divide (through mitosis) and differentiate into diverse specialized cell types and can self-renew to produce more stem cells. Stem cells can now be artificially grown and transformed (differentiated) into specialized cell types with characteristics consistent with cells of various tissues such as muscles or nerves through cell culture.
Correct Option: B
Stem cells are biological cells found in all multicellular organisms, that can divide (through mitosis) and differentiate into diverse specialized cell types and can self-renew to produce more stem cells. Stem cells can now be artificially grown and transformed (differentiated) into specialized cell types with characteristics consistent with cells of various tissues such as muscles or nerves through cell culture.
- Fermentation is a process of decomposition of an organic compound by :
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Fermentation in food processing typically is the conversion of carbohydrates to alcohols and carbon dioxide or organic acids using yeasts, bacteria, or a combination there of, under anaerobic conditions. Fermentation in simple terms is the chemical conversion of sugars into ethanol. Both alcoholic fermentation and glycolysis are anaerobic fermentation processes that begin with the sugar glucose. Glycolysis requires 11 enzymes which degrade glucose to lactic acid. Alcoholic fermentation follows the same enzymatic pathway for the first 10 steps. The last enzyme of glycolysis, lactate dehydrogenase, is replaced by two enzymes in alcoholic fermentation. These two enzymes, pyruvate decarboxylase and alcoholic dehydrogenase, convert pyruvic acid into carbon dioxide and ethanol in alcoholic fermentation.
Correct Option: B
Fermentation in food processing typically is the conversion of carbohydrates to alcohols and carbon dioxide or organic acids using yeasts, bacteria, or a combination there of, under anaerobic conditions. Fermentation in simple terms is the chemical conversion of sugars into ethanol. Both alcoholic fermentation and glycolysis are anaerobic fermentation processes that begin with the sugar glucose. Glycolysis requires 11 enzymes which degrade glucose to lactic acid. Alcoholic fermentation follows the same enzymatic pathway for the first 10 steps. The last enzyme of glycolysis, lactate dehydrogenase, is replaced by two enzymes in alcoholic fermentation. These two enzymes, pyruvate decarboxylase and alcoholic dehydrogenase, convert pyruvic acid into carbon dioxide and ethanol in alcoholic fermentation.
- Who discovered sex hormones?
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Eugen Steinach discovered the sex hormones in 1921. He conducted experiments in the transplantation of a male guinea pig’s testes into a female and the castration of the male. The testes secretion, now known as testosterone, resulted in the female guinea pig developing male sexual behavior such as mounting the partner. This led Steinach to theorize that the gland’s secretions were responsible for sexuality.
Correct Option: B
Eugen Steinach discovered the sex hormones in 1921. He conducted experiments in the transplantation of a male guinea pig’s testes into a female and the castration of the male. The testes secretion, now known as testosterone, resulted in the female guinea pig developing male sexual behavior such as mounting the partner. This led Steinach to theorize that the gland’s secretions were responsible for sexuality.
- Which of the following is NOT included in the Technology Mission?
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The Technology Mission on Oilseeds was launched by the Central Government in 1986 to increase the production of oilseeds to reduce import and achieve self-sufficiency in edible oils. Subsequently, pulses, oil palm and maize were also brought within the purview of the Mission in 1990-91, 1992 and 199596 respectively. In addition, the National Oilseeds and Vegetable Oils Development (NOVOD) Board also supplement the efforts of TMOP by opening of newer areas for non-traditional oilseeds. IT is promoting Tree Borne Oilseeds (TBO)s.
Correct Option: D
The Technology Mission on Oilseeds was launched by the Central Government in 1986 to increase the production of oilseeds to reduce import and achieve self-sufficiency in edible oils. Subsequently, pulses, oil palm and maize were also brought within the purview of the Mission in 1990-91, 1992 and 199596 respectively. In addition, the National Oilseeds and Vegetable Oils Development (NOVOD) Board also supplement the efforts of TMOP by opening of newer areas for non-traditional oilseeds. IT is promoting Tree Borne Oilseeds (TBO)s.