Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 2087
TLS Online TPP Program

#Question id: 2112

According to the fluid mosaic model, a membrane:

#Unit 2. Cellular Organization

  1. is composed of a fluid bilayer of phospholipids between two layers of hydrophilic proteins

  2. is composed of a single layer of fluid phospholipids between two layers of hydrophilic proteins

  3.  is composed of a mosaic of fluid polysaccharides and amphipathic proteins

  4. is composed of a fluid bilayer of phospholipids with embedded amphipathic proteins

More Questions
TLS Online TPP Program

#Question id: 2345

#Unit 2. Cellular Organization

An amoeba is engulfing bacterial cells by surrounding them with a pseudopod. This is an example of
TLS Online TPP Program

#Question id: 19100

#Unit 4. Cell Communication and Cell Signaling

Xanthomonas oryzae secretes a highly conserved peptide, which mediates quorum sensing by
TLS Online TPP Program

#Question id: 1231

#Unit 4. Cell Communication and Cell Signaling

Arrange the following events in the proper order in which they occur during transduction of the TGFβ signal:

a. association of Smad3 and Smad4  

b. phosphorylation of TGFβ receptor I by TGFβ receptor II            

c. phosphorylation of Smad3 by TGFβ receptor I     

d. nuclear import of Smad3   

e. binding of TGFβ to TGFβ receptor II  
TLS Online TPP Program

#Question id: 4832

#Unit 8. Inheritance Biology

Percentage of crossing over is more when
TLS Online TPP Program

#Question id: 3443

#Unit 11. Evolution and Behavior

The evolution of mating systems is most likely affected by