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#Question id: 142


Histidine has pKa values of 1.8, 6.0 (R-group) and 9.3 . At pH 8.0, the net charge on histidine is

#Section 2: General Biology
  1. positive.

  2. negative.

  3. neutral (uncharged). 

  4. insufficient information to tell.


Answer:- Option(s): 3


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#Question id: 2116

#Section 2: General Biology

When a cell is in equilibrium with its environment, which of the following processes occurs for substances that can diffuse through the plasma membrane?

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#Question id: 2117

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following statements correctly describes osmosis?

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#Question id: 2117

#Section 2: General Biology

Which of the following statements correctly describes osmosis?

TLS Online TPP Program

#Question id: 2118

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following statements correctly describes the normal tonicity conditions for typical plant and animal cells? The animal cell is in:

TLS Online TPP Program

#Question id: 2118

#Section 2: General Biology

Which of the following statements correctly describes the normal tonicity conditions for typical plant and animal cells? The animal cell is in:

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#Question id: 2119

#Section 3: Genetics, Cellular and Molecular Biology

A sodium-potassium pump:

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