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TLS Online TPP Program

#Question id: 378

Which of the following statements about buffers is true?

#Section 4: Fundamentals of Biological Engineering

  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: 8921

#Section 6: Plant, Animal and Microbial Biotechnology

Evidence of which structure or characteristic would be most surprising to find among fossils of the Ediacaran fauna?
TLS Online TPP Program

#Question id: 3917

#Section 3: Genetics, Cellular and Molecular Biology

For an RNA hairpin loop to form, the transcribed region of the DNA sequence must __.
TLS Online TPP Program

#Question id: 3514

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following are not conclude of that monohybrid cross?
TLS Online TPP Program

#Question id: 1974

#Section 2: General Biology

A person exposed to a new cold virus would not feel better for one to two weeks because
TLS Online TPP Program

#Question id: 1634

#Section 2: General Biology

What is the main reason an experimental animal treated with X-rays can act as a living test tube for lymphocyte transfer experiments?