Practice Questions

TLS Online TPP Program

#Question id: 808

Which, if any, of the following statements is false?

#Unit 1. Molecules and their Interaction Relevant to Biology

RNA interference (RNAi) is a cellular defense mechanism that is triggered by the presence in cells of unnatural double-stranded RNA, as can occur after viral infections.
RNAi therapy is a type of RNA-targeted therapy in which specific double-stranded RNA constructs are engineered to appear in diseased cells in order to incite the cells to destroy any RNA that contains the same sequence.
By destroying RNAs that are related to a specifically introduced genetic construct, artificial RNAi is effectively a type of gene-specific silencing.
RNAi therapy is best suited to silencing genes so as to replicate a phenotype caused by loss-of-function mutations.

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TLS Online TPP Program

#Question id: 10599

#Unit 10. Ecological Principles

In a type I survivorship curve characterized by:

TLS Online TPP Program

#Question id: 304

#Unit 1. Molecules and their Interaction Relevant to Biology

As compared to covalent compounds electrovalent compounds generally possess ___________

TLS Online TPP Program

#Question id: 24138

#General Aptitude

SPY : CLANDESTINE

TLS Online TPP Program

#Question id: 12571

#Unit 10. Ecological Principles

Although extinction is a natural process, current extinctions are of concern to environmentalists because

TLS Online TPP Program

#Question id: 17269

#Unit 8. Inheritance Biology

In humans, albinism (unpigmented skin, hair, and eyes) is due to an enzymatic deficiency, and it is an autosomal recessive trait. Suppose that in a small country of one million people (“Generation 1”), there are 500 aa albinos and 9000 Aa heterozygous carriers. In the next generation of 1 million individuals (Generation 2), what are the expected numbers of aa albinos and Aa carriers? (Assume random mating and all other HardyWeinberg conditions.)