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TLS Online TPP Program

#Question id: 378

Which of the following statements about buffers is true?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. A buffer composed of a weak acid of pKa = 5 is stronger at pH 4 than at pH 6.

  2. At pH values higher than the pKa, the salt concentration is higher than that of the acid.

  3. The strongest buffers are those composed of strong acids and strong bases.

  4. When pH = pKa, the weak acid and salt concentrations in a buffer are equal.

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TLS Online TPP Program

#Question id: 664

#Unit 1. Molecules and their Interaction Relevant to Biology

Which is evidence that structures for proteins determined by X-ray crystallography represent the structures in solution?
TLS Online TPP Program

#Question id: 11190

#Unit 7. System Physiology – Animal

For a neuron with an initial membrane potential at -70 mV, an increase in the movement of potassium ions out of that neuron's cytoplasm would result in the ________.
TLS Online TPP Program

#Question id: 23607

#General Aptitude

Pointing to a lady a person said, “The son of her only brother is the brother of my wife.” How is the lady related to the person?
TLS Online TPP Program

#Question id: 1580

#Unit 4. Cell Communication and Cell Signaling

Advantages of Toxoid (inactivated exotoxin) can be
TLS Online TPP Program

#Question id: 9239

#Unit 9. Diversity of Life Forms

Why are changes in the global carbon cycle important?