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TLS Online TPP Program

#Question id: 2229

The difference between pinocytosis and receptor-mediated endocytosis is that:

#Unit 2. Cellular Organization

  1. pinocytosis brings only water molecules into the cell, but receptor-mediated endocytosis brings in other molecules as well

  2. pinocytosis increases the surface area of the plasma membrane, whereas receptor-mediated endocytosis decreases the plasma membrane surface area

  3. pinocytosis is nonselective in the molecules it brings into the cell, whereas receptor-mediated endocytosis offers more selectivity

  4. pinocytosis can concentrate substances from the extracellular fluid, but receptor-mediated endocytosis cannot

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TLS Online TPP Program

#Question id: 28709

#Unit 2. Cellular Organization

The first vesicle trafficking step in the secretory pathway, is mediated by__
TLS Online TPP Program

#Question id: 23199

#Unit 13. Methods in Biology

Metal shadowing- thin film of platinum is coated from a _________ which provides information about the three-dimensional topology of the sample.
TLS Online TPP Program

#Question id: 29466

#Unit 6. System Physiology – Plant

EGTA [ethylene glycol-bis(b-aminoethyl ether) N,N,N′,N′-tetraacetic acid], a compound that can  
a. Introduce Ca2+ 
b. chelate Ca2+ 
c. prevents Ca2+ uptake by cells 
d. inhibits root gravitropism
Which of the following is correct
TLS Online TPP Program

#Question id: 5632

#Unit 5. Developmental Biology

In the egg,_______ contains proteolytic enzymes that are released by exocytosis after fertilization and are important for preventing polyspermy.
TLS Online TPP Program

#Question id: 4257

#Unit 3. Fundamental Processes

An original section of DNA has the base sequence AGCGTTACCGT. A mutation in this DNA strand results in the base sequence AGGCGTTACCGT. What type of mutation does this change represent?