Practice Questions

TLS Online TPP Program

#Question id: 3843

In DNA replication in E. coli, the enzyme primase is used to attach a 5 to 10 base ribonucleotide strand complementary to the parental DNA strand. The RNA strand serves as a starting point for the DNA polymerase that replicates the DNA. If a mutation occurred in the primase gene, which of the following results would you expect?

#Unit 3. Fundamental Processes

Replication would only occur on the leading strand.
Replication would only occur on the lagging strand.
Replication would not occur on either the leading or lagging strand.
Replication would not be affected as the enzyme primase in involved with RNA synthesis.

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TLS Online TPP Program

#Question id: 12294

#Unit 10. Ecological Principles

A ________________ survivorship curve shows a constant rate of survivorship throughout life.

TLS Online TPP Program

#Question id: 1361

#Unit 4. Cell Communication and Cell Signaling

Fluorscein that is injected into one plant cell .......show up in adjacent cells; DNA injected into one plant cell......... Show up in adjacent cells.

TLS Online TPP Program

#Question id: 18906

#Unit 13. Methods in Biology

A good vector must have the following properties.

a) It should be able to replicate autonomously.

b) A vector should be ideally less than 10 kb in size

c) The vector should be easy to isolate and purify.

d) vector should have suitable marker genes that allow easy detection and/or selection of the transformed host cells.

e) it should a multiple cloning site

TLS Online TPP Program

#Question id: 6598

#General Aptitude