Phosphoric acid is tribasic, with pKa of 2.14, 6.86 and 12.4. The ionic form that predominates at pH 3.2 is

TLS Online TPP Program

#Question id: 2060

#Unit 2. Cellular Organization

An animal cell lacking carbohydrates on the external surface of its plasma membrane would likely be impaired in which function?

TLS Online TPP Program

#Question id: 2061

#Unit 2. Cellular Organization

Which of the following types of molecules are hydrophilic and therefore excluded from the hydrophobic portion of the phospholipid bilayer?

TLS Online TPP Program

#Question id: 2062

#Unit 2. Cellular Organization

Which of the following types of molecules lack hydrophilic domains?

TLS Online TPP Program

#Question id: 2063

#Unit 2. Cellular Organization

In what way do the membranes of a eukaryotic cell vary?

TLS Online TPP Program

#Question id: 2065

#Unit 2. Cellular Organization

Which of the following are least likely to diffuse through the phospholipid bilayer of a cell membrane?

TLS Online TPP Program

#Question id: 2066

#Unit 2. Cellular Organization

Which of the following statements describes a characteristic feature of a carrier protein in a plasma membrane?