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TLS Online TPP Program

#Question id: 2110

According to the fluid mosaic model of cell membranes, phospholipids:

#SCPH06 I Botany

  1. can move laterally along the plane of the membrane

  2. frequently flip-flop from one side of the membrane to the other

  3. occur in an uninterrupted bilayer, with membrane proteins restricted to the surface of the membrane

  4. have hydrophilic tails in the interior of the membrane

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TLS Online TPP Program

#Question id: 5753

#SCPH06 I Botany

A bacterial histidine mutant was plated on minimal medium and a single colony grew. You decide to sequence the histidine biosynthetic gene of the revertant and discover that the original mutation is still present.  This colony must have been able grow due to a
TLS Online TPP Program

#Question id: 5113

#SCPH01 Biochemistry

The adult stem cell is housed in and controlled by its own adult stem cell niche. Which one of the following process not occur in niche?
TLS Online TPP Program

#Question id: 3893

#SCPH05 I Biotechnology

Protein structural motifs often have general functions in common.  Which one of the following motifs is known to be involved in protein dimer formation, but not in direct protein-DNA interactions?
TLS Online TPP Program

#Question id: 19616

#SCPH05 I Biotechnology

Which of the following is the right temperature coefficient (n) expression?
TLS Online TPP Program

#Question id: 4327

#SCPH05 I Biotechnology

What would occur if the repressor of an inducible operon were mutated so it could not bind the operator?