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TLS Online TPP Program

#Question id: 4390

Epigenetics marks refer to modifications to DNA and proteins that in turn regulate gene expression. Which statement is true regarding these specific types of modifications?

#Part-A Aptitude & General Biotechnology

  1. They have the ability to both silence and activate genes.

  2. They can involve the methylation of cytosine bases.

  3. They are linked to the acetylation of histones.

  4. All of the above

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TLS Online TPP Program

#Question id: 18743

#Part-A Aptitude & General Biotechnology

What happens if insert DNA is cut with two different restriction enzymes at the ends?
TLS Online TPP Program

#Question id: 11223

#Part-B Specialized Branches in Biotechnology

Of those listed, which event occurs first following a depolarizing stimulus applied to the presynaptic membrane of an axon terminal?
TLS Online TPP Program

#Question id: 3643

#Part-A Aptitude & General Biotechnology

One DNA strand, the______________, is made continuously in a 5→3 direction from the origin.
TLS Online TPP Program

#Question id: 18804

#Part-A Aptitude & General Biotechnology

Non toxic labelling can be done by using
TLS Online TPP Program

#Question id: 12677

#Part-B Specialized Branches in Biotechnology

Aquatic ecosystems that are most readily damaged by acid are those that lack an important buffer that dissolves into the runoff after a precipitation event. What is this buffer?