Active Transport 

Which of the following is wrong? 

  1. Uses energy to transport 
  2. Uses energy to pump molecules against a concentration gradient 
  3. Carried out by specific membrane proteins 
  4. Substances are transported from a high concentration to low concentration 

 

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Transport Proteins 

  1. Can perform only passive transport 
  2. Performs passive transport as well as Active transport 
  3. Needed only in active transport 
  4. They may be required for simple diffusion 

 

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Pumps 

  1. Can perform only passive transport 
  2. Performs passive transport as well as Active transport 
  3. Needed only in active transport 
  4. They may be required for simple diffusion 

 

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Membrane proteins are for 

  1. Uphill transport 
  2. Downhill transport 
  3. Uphill as well as downhill transport only 
  4. For Facilitated Diffusion only 

 

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Transport proteins are 

  1. Specific 
  2. Sensitive to inhibitors 
  3. Show saturation 
  4. All of these 
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 Which of the following is not a common characteristic between Active transport and Facilitated Transport? 

  1. Use of ATP 
  2. Highly selective 
  3. Liable to saturate 
  4. Under Hormonal Regulation 
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 Water 

Which one is wrong for Water. 

  1. Provides a medium in which different substances are dissolved 
  2. Makes 92% part of watermelon 
  3. Makes 30-45% part of most herbaceous plants 
  4. Present in dry seeds as well 

 

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Transpiration 

  1. Loss of water in soil 
  2. Loss of minerals in soil 
  3. Loss of water to the air from the leaves 
  4. Loss of organic substances because of photorespiration 
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 A mature corn plant absorbs…….. of water in a day while a mustard plant absorbs water equal to its own weight in about…….. 

  1. 5L, 3hours 
  2. 3L, 5 hours 
  3. 5L, 5 hours 
  4. 3L, 3 hours 
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Water is often a major limiting factor in

  1. Photosynthesis
  2. Respiration
  3. Photorespiration
  4. Plant Growth and Productivity
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