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TLS Online TPP Program

#Question id: 19888

There are some typical enzyme used in the manipulation of nucleic acid;

                 

                 ENZYMES

 

USE IN NUCLEIC ACID MANIPULATION

 

A) klenow

 

i) DNA-dependent RNA polymerase

 

B) T4 DNA polymerase

 

ii) Single-strand specific nuclease

 

C) Taq DNA polymerase

 

iii) DNA pol I lacks 5’→ 3’ exonuclease activity

 

D) T7 RNA polymerase

 

iv) Thermostable DNA polymerase used in PCR

 

E) S1 nuclease

 

v) Lack  5’→ 3’ exonuclease activity

#Unit 13. Methods in Biology
  1. A-v, B-i, C-ii, D-i, E-iii, 
  2. A-iv, B-iii, C-i, D-ii, E-v, 
  3. A-ii, B-iv, C-v, D-iii, E-i, 
  4. A-iii, B-v, C-iv, D-i, E-ii, 
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TLS Online TPP Program

#Question id: 12341

#Unit 10. Ecological Principles

The figure shows population growth trajectories over time (as indicated by the arrows) of two stored-grain beetle  species  when  grown  together  under  constant  conditions.  Three  experiments  were  performed  that  differed only in the initial densities of the two species. Which of the following is the best interpretation of the experimental results?
TLS Online TPP Program

#Question id: 12342

#Unit 10. Ecological Principles

Which of the following is a biological attribute that would most likely allow a species to become cosmopolitan in distribution?
TLS Online TPP Program

#Question id: 12343

#Unit 10. Ecological Principles

Hybrids between some related species of plants are sterile because the parent plants had different chromosome numbers. Occasionally the chromosome number of such a hybrid  plant doubles spontaneously. Which of the following best describes the descendants of those plants with the double chromosome number?
TLS Online TPP Program

#Question id: 12344

#Unit 10. Ecological Principles

The concept of punctuated equilibrium refers to
TLS Online TPP Program

#Question id: 12345

#Unit 10. Ecological Principles

Shannon's index of diversity is calculated using the equation below, where pi is the proportion of the ithShannon's index of diversity is calculated using the equation below, where pi is the proportion of the ith species and ln is natural logarithm. For a community with a given number of species, which of the following statements is true? species and ln is natural logarithm. For a community with a given number of species, which of the following statements is true?
TLS Online TPP Program

#Question id: 12346

#Unit 10. Ecological Principles

The schematic below shows the relationship between survivorship with age (relative to maximum lifespan) in Species 1 (dashed line) and Species 2 (solid line). Which of the following inferences is compatible with this figure?