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Glycerol and antifreeze proteins occur i...

Glycerol and antifreeze proteins occur in

A

Ice Fish

B

Antarctic Fish

C

Whale

D

Both A and B.

Text Solution

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The correct Answer is:
To answer the question "Glycerol and antifreeze proteins occur in," we need to analyze the options provided and understand the role of glycerol and antifreeze proteins in certain organisms. ### Step-by-Step Solution: 1. **Understanding Antifreeze Proteins (AFPs)**: - Antifreeze proteins are polypeptides produced by certain organisms to survive in extremely cold environments. They prevent the formation of ice crystals in bodily fluids, allowing these organisms to thrive in temperatures below freezing. 2. **Understanding Glycerol**: - Glycerol, also known as ethylene glycol, is another antifreeze component that helps organisms survive in low temperatures by lowering the freezing point of their bodily fluids. 3. **Analyzing the Options**: - **Option A: Ice Fish**: Ice fish are known to inhabit cold waters, particularly in polar regions. They possess antifreeze proteins and glycerol, which allow them to survive in temperatures below 0°C. - **Option B: Antarctic Fish**: Similar to ice fish, Antarctic fish also live in frigid waters and have adaptations including antifreeze proteins and glycerol to survive in extreme cold. - **Option C: Whale**: Whales are marine mammals that can tolerate cold waters but do not specifically produce antifreeze proteins or glycerol as adaptations to extreme cold. - **Option D: Both A and B**: This option suggests that both ice fish and Antarctic fish have antifreeze proteins and glycerol. 4. **Conclusion**: - Since both ice fish and Antarctic fish are adapted to survive in extremely cold environments through the production of antifreeze proteins and glycerol, the correct answer is **Option D: Both A and B**. ### Final Answer: Glycerol and antifreeze proteins occur in **both ice fish and Antarctic fish** (Option D). ---
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The boiling point elevation and freezing point depression of solutions have a number of partical applications. Ethylene glycol (CH_(2)OH-CH_(2)OH) is used in automobile radiatiors as an antifreeze because it lowers the freezing point of the coolant. The same substance also helps to prevent the radiator coolant from boiling away by elevating the boiling point. Ethylene glycol has low vapour pressure. We can also use glycerol as an antifreeze. In order for the boiling point elevation to occur, the solute must be non-volatile, but no such restriction applies to freezing point depression. For example, methanol (CH_(3)OH) , a fairly volatile liquid that boils only at 65^(@)C , is sometimes used as an antifreeze in automobile radiators. If the cost of glycerol, glycol, and methanol is same, then the sequence of economy to use these compounds as antifreeze will be

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The boiling point elevation and freezing point depression of solutions have a number of partical applications. Ethylene glycol (CH_(2)OH-CH_(2)OH) is used in automobile radiatiors as an antifreeze because it lowers the freezing point of the coolant. The same substance also helps to prevent the radiator coolant from boiling away by elevating the boiling point. Ethylene glycol has low vapour pressure. We can also use glycerol as an antifreeze. In order for the boiling point elevation to occur, the solute must be non-volatile, but no such restriction applies to freezing point depression. For example, methanol (CH_(3)OH) , a fairly volatile liquid that boils only at 65^(@)C , is sometimes used as an antifreeze in automobile radiators. Which among the following is the most volatile and the best antifreeze?

The boiling point elevation and freezing point depression of solutions have a number of partical applications. Ethylene glycol (CH_(2)OH-CH_(2)OH) is used in automobile radiatiors as an antifreeze because it lowers the freezing point of the coolant. The same substance also helps to prevent the radiator coolant from boiling away by elevating the boiling point. Ethylene glycol has low vapour pressure. We can also use glycerol as an antifreeze. In order for the boiling point elevation to occur, the solute must be non-volatile, but no such restriction applies to freezing point depression. For example, methanol (CH_(3)OH) , a fairly volatile liquid that boils only at 65^(@)C , is sometimes used as an antifreeze in automobile radiators. 620 g glycol is added to 4 kg water in the radiator of car. What amount of ice will separate out at -6^(@)C ?

The boiling point elevation and freezing point depression of solutions have a number of partical applications. Ethylene glycol (CH_(2)OH-CH_(2)OH) is used in automobile radiatiors as an antifreeze because it lowers the freezing point of the coolant. The same substance also helps to prevent the radiator coolant from boiling away by elevating the boiling point. Ethylene glycol has low vapour pressure. We can also use glycerol as an antifreeze. In order for the boiling point elevation to occur, the solute must be non-volatile, but no such restriction applies to freezing point depression. For example, methanol (CH_(3)OH) , a fairly volatile liquid that boils only at 65^(@)C , is sometimes used as an antifreeze in automobile radiators. Which of the following is a better reagent for depression in freezing point but not for elevation in boiling point?

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