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TLS Online TPP Program

#Question id: 11204

Why do Na+ ions enter the cell when voltage-gated Na+ channels are opened in neurons?

#Part-A Aptitude & General Biotechnology

  1. because the Na+ concentration is much lower outside the cell than it is inside

  2. because the Na+ ions are actively transported by the sodium-potassium pump into the cell

  3. because the Na+ concentration is much higher outside the cell than it is inside, and the Na+ ions are attracted to the negatively charged interior

  4. because the Na+ concentration is much higher outside the cell than it is inside, and the Na+ ions are actively transported by the sodium-potassium pump into the cell

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TLS Online TPP Program

#Question id: 16490

#Part-B Specialized Branches in Biotechnology

Significance of producing transgenic plants are aimed at producing 
TLS Online TPP Program

#Question id: 11203

#Part-B Specialized Branches in Biotechnology

Which of the following statements about action potentials is correct?
TLS Online TPP Program

#Question id: 4746

#Part-A Aptitude & General Biotechnology

Two independent pure line varieties having deep red and brown phenotype in their seed coat were cross, the all f1 progeny is deep red. The F2 progeny obtain from selfing show deep red and brown in ratio of 15:1. Which of the following observation is correct?
TLS Online TPP Program

#Question id: 11073

#Part-B Specialized Branches in Biotechnology

The respiratory passageways have smooth muscle in their walls. Which of the following best describes the effect of acetylcholine and epinephrine on the respiratory passageways?
TLS Online TPP Program

#Question id: 940

#Part-A Aptitude & General Biotechnology

Transamination reactions require which coenzyme?