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TLS Online TPP Program

#Question id: 24473

The CTD contains a series of repeats of the heptapeptide sequence: Tyr-Ser-Pro-Thr-Ser-Pro-Ser. In which 

#Unit 3. Fundamental Processes
  1. IIa is dephosphorylated form, and IIo is dCTD form while IIb is phosphorylated
  2. IIa is dCTD form, and IIo is phosphorylated form while IIb is dephosphorylated
  3. IIa is phosphorylated form, and IIo is dephosphorylated form while IIb is dCTD
  4. IIa is dephosphorylated form, and IIo is phosphorylated form while IIb is dCTD
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TLS Online TPP Program

#Question id: 2249

#Unit 2. Cellular Organization

In intestinal lumen epithelial cells, which of the following occurs by passive transport?

a. import of Na+ on the apical side    

b. export of Na+ on the basal side

c. import of glucose on the apical side           

d. export of glucose on the basal side
TLS Online TPP Program

#Question id: 2250

#Unit 2. Cellular Organization

Which of the following is true about cystic fibrosis?
TLS Online TPP Program

#Question id: 2251

#Unit 2. Cellular Organization

Differences between cotransport and active ion transport include
TLS Online TPP Program

#Question id: 2252

#Unit 2. Cellular Organization

The generation and maintenance of a membrane electric potential requires which of the following:

a. active pumping of ions       

b. ion-specific membrane channel proteins

c. ATP                                    

d. a generally permeable membrane
TLS Online TPP Program

#Question id: 2253

#Unit 2. Cellular Organization

Match the following lipid linked proteins (column I) with their function (Column II).

Column I

Column II

A. prenylated proteins

i. These proteins are located in a number of subcellular compartments, including the cytosol, the endoplasmic reticulum, the inner face of the plasma membrane, and the nucleus.

B. fatty acylated proteins

ii. The core structure of these proteins consists of phosphatidylinositol glycosidically linked to a linear tetrasaccharide composed of three mannose residues and one glucosaminyl residue.

C. glycosylphosphatidylinositol-linked proteins

iii. The proteins that have covalently attached lipids that are built from isoprene units

TLS Online TPP Program

#Question id: 2254

#Unit 2. Cellular Organization

If the intracellular [Ca2+] is 10−7 mol/L and the extracellular [Ca2+] is 2 × 10−3 mol/L, at what potential difference across the cell membrane will Ca2+ be at electrochemical equilibrium?