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Biology |
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| 1)Both in cells and extracellular fluids diabasic phosphate (HPO4-) and monobasic phosphate (H2PO4-) act as acid base buffers to maintain- | |||
| K+ concentration of extracellular fluid | Na+ concentration of extracellular fluid | ||
| Na+ concentration of cellular fluid | H+ concentration of cellular fluid | ||
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| 2)All the statements are correct except | |||
| Molybdenum is necessary for fixation of nitrogen catalysed by the enzyme nitrogenase | Mitochondria are rich in Manganese | ||
| Calcium and manganesium have no effect on the excitability of nerves and muscles | Mangnesium is essential for a large number of enzymes, particularly those utilizing ATP | ||
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| 3)The most abundant element in cell/living matter is | |||
| C | N | ||
| H | O | ||
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| 4)Element(s) found in cytochromes | |||
| Mg++ | Fe++ and Cu++ | ||
| Cu++ | Fe+++ and Mg++ | ||
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| 5)Descending order of concentration of K, Na, Ca in a cell | |||
| Ca - K - Na | K - Na - Ca | ||
| Na - K - Ca | Na - Ca - K | ||
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| 6)All the macromolecules are the result of the process of polymerisation, a process in which repeating subunits termed monomers are bound into chains of different lengths except | |||
| Proteins | Lipids | ||
| Carbohydrates | Nucleic acids | ||
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| 7)The three monosaccharide units of Raffinose are | |||
| Glucose, Levulose and galactose | Glucose, Pentose and maltose | ||
| Fructose, fructose and galactose | Cgucose, fractose and sucrose | ||
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| 8)The number of carbon atoms in monosaccharide vary from | |||
| 3 to 6 | 3 to 7 | ||
| 2 to 7 | 3 to 5 | ||
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| 9)The sweetest of all naturally occurring sugar is | |||
| Mannose | Galactose | ||
| Fructose | Glucose | ||
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| 10)Glucose is | |||
| Ketose hexose sugar | Aldose hexose sugar | ||
| Furanose pentose sugar | Pyranose pentose sugar | ||
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| 11)Glucose is also called | |||
| Grape sugar | Corn sugar | ||
| Dextrose | All of these | ||
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| 12)Why sucrose is used instead of glucose to preserve fruit product? | |||
| Sucrose is more common in nature | Sucrose is easily available and has both glucose and fructose | ||
| Glucose is reactive as it has CHO group | None of these | ||
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| 13)The two sugars of honey are | |||
| Dextrose and lactose | Dextrose and levulose | ||
| Glucose and galactose | Glucose and fructose | ||
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| 14)Which one of the following is not reducing sugar? | |||
| Sucrose | Glucose | ||
| Lactose | Maltose | ||
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| 15)Which one of the following will yield only glucose on hydrolysis? | |||
| Maltose | Raffinose | ||
| Lactose | Sucrose | ||
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