TLS Online TPP Program

#Question id: 119


Tay-Sachs disease is the result of a genetic defect in the metabolism of:

#Biochemistry
  1. gangliosides.

  2. phosphatidyl ethanolamine.

  3. sterols.

  4. triacylglycerols.

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TLS Online TPP Program

#Question id: 38764

#Plant Biotechnology

Q. What is the primary cause of membrane "disturbance" during the PEG-induced fusion process? 

TLS Online TPP Program

#Question id: 38765

#Plant Biotechnology

Q. Why is the "washing process" considered a critical step for actual fusion to occur?


TLS Online TPP Program

#Question id: 38766

#Plant Biotechnology

Q. Statement 1 (Assertion): Protoplasts located in close proximity are more likely to undergo fusion during the washing phase of a PEG treatment. 
Statement 2 (Reason): The removal of PEG molecules disrupts the organized structure of the plasma lemma, creating localized instabilities that facilitate membrane merging
Which of the following is correct? 

TLS Online TPP Program

#Question id: 38767

#Plant Biotechnology

Q.  Statement I: Polyethylene glycol (PEG) facilitates protoplast fusion by disturbing the plasma membrane organization.
Statement II: PEG can bind Ca²⁺ ions, which act as bridges between negatively charged PEG and plasma membrane components.

TLS Online TPP Program

#Question id: 38768

#Plant Biotechnology

Q. Statement I: PEG is negatively charged and can interact with cations such as Ca²⁺.
Statement II: Ca²⁺ ions can bind to negatively charged molecules on the plasma membrane, promoting membrane proximity.

TLS Online TPP Program

#Question id: 38769

#Plant Biotechnology

Q. Statement I: During the washing step, PEG may remove plasma membrane components bound to it.
Statement II: Removal of these components can destabilize membrane integrity and promote fusion of adjacent protoplasts.