Practice Questions

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

The strength of hydrogen bonding makes its dissociation much slower than the ionization of water.
The rate of dissociation of a hydrogen bond is the same order of magnitude as the rate of ionization of water.
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.
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: 7305

#Unit 5. Developmental Biology

In plants, a growing mass of unorganized and undifferentiated cells that cover a wound; these cells can be induced to form a plant meristem and develop into shoots and/or roots called as

TLS Online TPP Program

#Question id: 15265

#Unit 2. Cellular Organization

The growth of microorganisms in a food product is influenced by the availability of

TLS Online TPP Program

#Question id: 15740

#Unit 5. Developmental Biology

The position of the testis-determining gene was narrowed down to a 35,000-base-pair region of the:

TLS Online TPP Program

#Question id: 6944

#Unit 5. Developmental Biology

Which would lead to a dorsalized embryo? (Recall that genes in Drosophila are named for their mutant phenotype.