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TLS Online TPP Program

#Question id: 337

Which statement below is true about the relative lifetime of a hydrogen bond, compared to the rate of water’s ionization to hydroxide ions and hydronium ions?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. The strength of hydrogen bonding makes its dissociation much slower than the ionization of water.

  2. The rate of dissociation of a hydrogen bond is the same order of magnitude as the rate of ionization of water.

  3. The two rates are linked in such a way that the more the water is ionized, the stronger and longer lasting hydrogen bonding will be.

  4. The lifetime of a water molecule before it is ionized is about 109 greater than the lifetime of a hydrogen bond.

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TLS Online TPP Program

#Question id: 665

#Unit 1. Molecules and their Interaction Relevant to Biology

Which statement is not true about the peptide bond?
TLS Online TPP Program

#Question id: 12760

#Unit 10. Ecological Principles

Which of the examples below provides appropriate abiotic and biotic factors that might determine the distribution of the species in question?
TLS Online TPP Program

#Question id: 28298

#Unit 5. Developmental Biology

Which of the following  PLC is activated by tyrosine kinase during egg activation?
TLS Online TPP Program

#Question id: 32517

#Unit 1. Molecules and their Interaction Relevant to Biology

A typical mitochondrion can be thought of as a cylinder 1 µm in diameter and 2 µm in length. If the pH in the matrix is 7.8, how many protons are contained in the mitochondrial matrix?
TLS Online TPP Program

#Question id: 3529

#Unit 8. Inheritance Biology

Mendel crossed tall and round seeded pea plants with dwarf and wrinkle seeded pea. The F1 plants were all tall and round seed. What is the probability of tall plant with wrinkle seed in F2 generation?