Two barnacles, Balanus and Chthamalus, can both survive on the lower rocks just above the low-tide line on the Scottish coast, but only Balanus actually does so, with Chthamalus adopting a higher zone. Which of the following best accounts for this niche separation?

#Question id: 922

#Unit 1. Molecules and their Interaction Relevant to Biology

Which compound is an intermediate of the  oxidation of fatty acids?

#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:

#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?

#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:

#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:

#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?