TLS Online TPP Program

#Question id: 1221


If an animal cell suddenly lost the ability to produce GTP, what might happen to its signaling system?

#Unit 4. Cell Communication and Cell Signaling
  1. It would not be able to activate G proteins on the cytoplasmic side of the plasma membrane.

  2. It would be able to carry out reception and transduction but would not be able to respond to a signal

  3. It would use ATP instead of GTP to activate G proteins on the cytoplasmic side of the plasma membrane

  4. It would not be able to activate receptor tyrosine kinases

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TLS Online TPP Program

#Question id: 923

#Unit 1. Molecules and their Interaction Relevant to Biology

 The conversion of palmitoyl-CoA (16:0) to myristoyl-CoA (14:0) and 1 mol of acetyl-CoA by the B-oxidation pathway results in the net formation of:

TLS Online TPP Program

#Question id: 924

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is not true regarding the oxidation of 1 mol of palmitate (16:0) by the B-oxidation pathway?

TLS Online TPP Program

#Question id: 925

#Unit 1. Molecules and their Interaction Relevant to Biology

If an aerobic organism (e.g., the bacterium E. coli) were fed each of the following four compounds as a source of energy, the energy yield per mole from these molecules would be in the order:

TLS Online TPP Program

#Question id: 926

#Unit 1. Molecules and their Interaction Relevant to Biology

The carbon atoms from a fatty acid with an odd number of carbons will enter the citric acid cycle as acetyl-CoA and:

TLS Online TPP Program

#Question id: 927

#Unit 1. Molecules and their Interaction Relevant to Biology

In the disease sprue, vitamin B12 (cobalamin) is poorly absorbed in the intestine, resulting in B12 deficiency. If each of the following fatty acids were in the diet, for which one would the process of fatty acid oxidation be most affected in a patient with sprue?

TLS Online TPP Program

#Question id: 928

#Unit 1. Molecules and their Interaction Relevant to Biology

 Which enzyme is the major regulatory control point for B-oxidation?