Practice Questions

TLS Online TPP Program

#Question id: 767

With respect to how miRNAs work, which, if any, of the following statements, is false?

#Unit 1. Molecules and their Interaction Relevant to Biology

An miRNA is initially composed of two RNA strands, a passenger strand that will be destroyed and a complementary RNA, the guide strand, that is required for it to work.
an active miRNA regulates target protein-coding genes by binding to complementary sequences in the mRNA
A single miRNA normally binds to transcripts from just one target gene
A single type of mRNA can be regulated by multiple different miRNAs.

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TLS Online TPP Program

#Question id: 19813

#Unit 12. Applied Biology

Antisense RNA approach is one of the strategies for producing virus resistant transgenic plants. How this provides protection?

TLS Online TPP Program

#Question id: 15993

#Unit 12. Applied Biology

During the isolation of somaclonal variants such as cell selection contain positive selection, describe by which method that the wild type cell are killed by selection agent while the variant cells remain alive?

TLS Online TPP Program

#Question id: 18579

#Unit 7. System Physiology – Animal

When the body is in a state of physiological equilibrium, it is said to be in a state of ______.

TLS Online TPP Program

#Question id: 6972

#Unit 5. Developmental Biology

Sodium ions influx and passive water movement result in fluid-filled blastocoel in __________embryos.

TLS Online TPP Program

#Question id: 9193

#Unit 9. Diversity of Life Forms

Which of the following best describes the consequences of White-band disease in Caribbean coral reefs?