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TLS Online TPP Program

#Question id: 381

Consider an acetate buffer, initially at the same pH as its pKa (4.76). When sodium hydroxide (NaOH) is mixed with this buffer, the:

#1. Molecules and their Interaction Relevant to Biology

  1. pH rises more than if an equal amount of NaOH is added to an acetate buffer initially at pH 6.76

  2. pH rises more than if an equal amount of NaOH is added to unbuffered water at pH 4.76.

  3. ratio of acetic acid to sodium acetate in the buffer falls.

  4. sodium acetate formed precipitates because it is less soluble than acetic acid.

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TLS Online TPP Program

#Question id: 10260

#1. Molecules and their Interaction Relevant to Biology

Arrange F, C, O, N in the decreasing order of electronegativity
TLS Online TPP Program

#Question id: 11010

#7. System Physiology – Animal

Which of the following best explains how sympathetic stimulation affects the heart?
TLS Online TPP Program

#Question id: 20988

#12. Applied Biology

Degradation of _______ could be optimized and linked to the reduction of Nitrate or Nitrous oxide
TLS Online TPP Program

#Question id: 4732

#8. Inheritance Biology

What is F2 phenotype ratio observed when a homozygous recessive mutation in either or both of two different genes results in the same mutant phenotype?
TLS Online TPP Program

#Question id: 10421

#6. System Physiology – Plant

The red light-induced rotation of the D ring of the chromophore causes the hairpin to become helical, which of the following β-hairpin changes conformation after rotation?