Practice Questions

TLS Online TPP Program

#Question id: 19841

Which of the following is true regarding Reverse transcriptase ?

#Unit 13. Methods in Biology

is used to proch1ce cDNA (complementary DNA) copies of, usually, mRNA that are used for creation of cDNA libraries
for removing 5' -phosphate from DNA ends.
for addition of phosphate group to an end having a free 5'-0H.
for removal of single-stranded protrusions from ends; both 3'- and 5'-extensions are removed.

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TLS Online TPP Program

#Question id: 2338

#Unit 2. Cellular Organization

Access to the nucleus is regulated by

TLS Online TPP Program

#Question id: 7110

#Unit 5. Developmental Biology

What may be the molecular trigger that causes cells in the presomitic mesoderm to finally condense into somites?

TLS Online TPP Program

#Question id: 11771

#Unit 10. Ecological Principles

Reciprocal transplant experiments are designed to reveal whether differences between populations are due to:

TLS Online TPP Program

#Question id: 13102

#Unit 13. Methods in Biology

With the help of DNA fingerprinting which can be used to determine paternity. There are three babies (Baby A, Baby B and Baby C) in a maternity ward, and three sets of confused and worried parents. (Father and Mother #1 are a couple, as are Father and Mother #2, and Father and Mother #3.)

You do each PCR reaction and load each one into a separate well of an agarose gel, and then run the gel.

Why is it that having more repeats leads to a band that is higher in the gel?

TLS Online TPP Program

#Question id: 9241

#Unit 9. Diversity of Life Forms

The main goal of sustainable development is to ________.