Practice Questions

TLS Online TPP Program

#Question id: 3041

Which statement about gram-negative bacteria is correct?

#Part-B Specialized Branches in Biotechnology

Penicillins are the best antibiotics to use against them.
They often possess an outer membrane containing toxic lipopolysaccharides.
Their chromosomes are composed of DNA tightly wrapped around large amounts of histone proteins.
Their cell walls are primarily composed of peptidoglycan.

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TLS Online TPP Program

#Question id: 19791

#Part-A Aptitude & General Biotechnology

Which of the following statements about polymerase chain reaction is correct?

a) PCR denaturation temperature calculated by using Y = X (1+E)n

b) Size of the primer negatively affects the efficiency of PCR

c) Standard PCR doesn’t efficiently amplify sequence much longer than about 5kb.

d) Primer annealing of PCR at 550C for 1.5 min.

e) Time taken for each cycle of PCR considerably longer than 3 min.

TLS Online TPP Program

#Question id: 19791

#Part-A Aptitude & General Biotechnology

Which of the following statements about polymerase chain reaction is correct?

a) PCR denaturation temperature calculated by using Y = X (1+E)n

b) Size of the primer negatively affects the efficiency of PCR

c) Standard PCR doesn’t efficiently amplify sequence much longer than about 5kb.

d) Primer annealing of PCR at 550C for 1.5 min.

e) Time taken for each cycle of PCR considerably longer than 3 min.

TLS Online TPP Program

#Question id: 19840

#Part-A Aptitude & General Biotechnology

Match the following source of thermostable DNA polymerase with proofreading (3’−5’ exonuclease) activity;

DNA Polymerase

Sources

A- Tma

i) Pyrococcus furiosus

B- Deep Vent^TM

ii) Pyrococcus woesi

C- Tli

iii) Thermotoga maritima

D- Pfu

iv) Pyrococcus sp.

E- Pwo

v) Thermococcus litoralis

TLS Online TPP Program

#Question id: 19840

#Part-A Aptitude & General Biotechnology

Match the following source of thermostable DNA polymerase with proofreading (3’−5’ exonuclease) activity;

DNA Polymerase

Sources

A- Tma

i) Pyrococcus furiosus

B- Deep Vent^TM

ii) Pyrococcus woesi

C- Tli

iii) Thermotoga maritima

D- Pfu

iv) Pyrococcus sp.

E- Pwo

v) Thermococcus litoralis

TLS Online TPP Program

#Question id: 19841

#Part-A Aptitude & General Biotechnology

Which of the following is true regarding Reverse transcriptase ?

TLS Online TPP Program

#Question id: 19841

#Part-A Aptitude & General Biotechnology

Which of the following is true regarding Reverse transcriptase ?