Practice Questions

TLS Online TPP Program

#Question id: 313

What is the difference between a particle being hydrated versus being solvated?

#SCPH28 | Zoology

A hydrated particle is surrounded by a shell of water. A solvated molecule is surrounded by a shell of solvent molecules, not necessarily water.
The terms hydrated and solvated mean exactly the same thing.
A hydrated particle has reacted with hydrogen. A solvated particle is dissolved in a solvent.
The word hydrated is used only when the solute is an electrolyte.

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TLS Online TPP Program

#Question id: 10503

#SCPH05 I Biotechnology

A Pseudomonas species that synthesizes the antifungal compound against the pathogenic fungus Gaeumannomyces graminis known as

TLS Online TPP Program

#Question id: 391

#SCPH05 I Biotechnology

In a hospital laboratory, a 10.0 mL sample of gastric juice, obtained several hours after a meal, was titrated with 0.1 M NaOH to neutrality; 7.2 mL of NaOH was required. The patient’s stomach contained no ingested food or drink, thus assume that no buffers were present. What was the pH of the gastric juice?

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#Question id: 11419

#SCPH28 | Zoology

There are more species in tropical areas than in places more distant from the equator. This is probably a result of

a) more predators and parasites

b) more dispersed annual solar radiation compared to the poles

c) more frequent ecological disturbances over a longer time span

d) a longer time frame without disturbances for evolution and speciation

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#Question id: 9272

#SCPH06 I Botany

The quantum yield of photosynthesis falls off drastically for far-red light of wavelengths greater than 680 nm, indicating that far-red light alone is inefficient in driving