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TLS Online TPP Program

#Question id: 3821

Which mechanism contributes to accuracy during DNA replication?

#Unit 3. Fundamental Processes

  1. The mismatch repair system recognizes an incorrect base-pair and corrects the mistake in the non-methylated strand.

  2. Using primers increases accuracy because the first nucleotides in a new nucleic acid chain are more likely to be correct.

  3. All DNA polymerases have a 5′→ 3′ exonuclease activity which can remove incorrect nucleotides during replication.

  4. Base-stacking between nucleotides and the template DNA controls insertion of the correct nucleotide.

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TLS Online TPP Program

#Question id: 12105

#Unit 10. Ecological Principles

A species of fish is found to require a certain water temperature, a particular oxygen content of the water, a particular depth, a rocky substrate on the bottom, and a variety of nutrients in the form of microscopic plants and animals to thrive. These requirements describe its 
TLS Online TPP Program

#Question id: 5719

#Unit 8. Inheritance Biology

Homologous chromosomes pair in prophase I as a following way, if crossingover occur between P and Q gene of homologous chromosome?

Which of the following proceeding event due to this abnormality?

A. Dicentric chromosome become breaks at anaphase I

B. Resulting one of the gamete received chromosome with deleted segment 

C. Recombinant gamete unable to produced viable progeny

D. Unable to separation of chromosome in anaphase II
TLS Online TPP Program

#Question id: 28898

#Unit 4. Cell Communication and Cell Signaling

Active Wnt signaling leads to___
TLS Online TPP Program

#Question id: 19526

#Unit 12. Applied Biology

CryII proteins are insecticidal to 
1. Diptera insects
2. Lepidopteran insects
3. Arthopods
Which if the following is incorrect?
TLS Online TPP Program

#Question id: 14900

#Unit 6. System Physiology – Plant

polymer-trapping model explains symplastic loading in plants, This model states that the sucrose diffussion takes place through cell to cell via plasmodesmata; which of the following prediction about the diffusion mechanism is INCORRECT?