Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 9320
TLS Online TPP Program

#Question id: 12538

Some global warming models predict that, if permafrost in the tundra regions in the northern hemisphere melts, atmospheric CO2  levels will increase. Which of the following statements best explains this prediction?

#Unit 10. Ecological Principles
  1. The heat released by  the melting  of  the ice  on  such a  vast scale will  cause atmospheric CO2  saturation levels to increase.
  2. All of the tundra producers will die if the permafrost melts, and because the tundra regions are vast in the northern hemisphere the tundra plants will not take part in photosynthetic removal of atmospheric CO2
  3. CO2 tied up in the permafrost ice will be released during a thaw.
  4. All  of  the  undecayed organic material would  be  subject to  decomposition following  a  thaw, which  would lead to incredible increase in global cellular respiration, and add to atmospheric CO2
More Questions
TLS Online TPP Program

#Question id: 19885

#Unit 13. Methods in Biology

The plasmid used by Cohen and Boyer fr their transformation experiment was
TLS Online TPP Program

#Question id: 19886

#Unit 13. Methods in Biology

Gene cloning refers to the
I) Production of large number of copies of the gene being cloned
II) Production of asexual progeny from a single individual or a cell 
III) Mechanism of intake of DNA fragments from the surrounding medium by a cell
TLS Online TPP Program

#Question id: 19887

#Unit 13. Methods in Biology

Paul Berg’s gene splicing experiment created the first rDNA molecules which was a
TLS Online TPP Program

#Question id: 19888

#Unit 13. Methods in Biology

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

TLS Online TPP Program

#Question id: 19889

#Unit 12. Applied Biology

The genetic monitoring and disease diagnosis are examples for ______________________ sensor?
TLS Online TPP Program

#Question id: 19890

#Unit 12. Applied Biology

QCM is a kind of a piezoelectric biosensor which detects mass change. What is the standard form of QCM biosensor ?