In experiments measuring the rates at which different monosaccharides diffuse across phospholipid membranes, it was found that the rates followed this pattern (from slowest to fastest): glucose

Question

In experiments measuring the rates at which different monosaccharides diffuse across phospholipid membranes, it was found that the rates followed this pattern (from slowest to fastest): glucose < mannose < arabinose < xylose < ribose.What aspect of the current theories about the origin of life do these results support?
A) It is thought that simple sugars were synthesized from simple molecule precursors in the primordial soup of early Earth.
B) It is thought that nucleotides arose as the result of bond formation between sugar molecules, phosphate ions, and organic bases.
C) It is thought that RNA was the first molecule to serve a catalytic function in the evolution of cells.
D) It is thought that proteins became the primary catalytic molecules in modern cells because their ability to carry out catalytic functions is superior to that of RNA.
E) It is thought that the evolution of living cells depended on the chemical evolution of certain biomolecules that serve as building blocks for biomacromolecules.

Quizplus · Accepted Answer

The Answer of In experiments measuring the rates at which different monosaccharides diffuse across phospholipid membranes, it was found that the rates followed this pattern (from slowest to fastest): glucose < mannose < arabinose < xylose < ribose.What aspect of the current theories about the origin of life do these results support?
A) It is thought that simple sugars were synthesized from simple molecule precursors in the primordial soup of early Earth.
B) It is thought that nucleotides arose as the result of bond formation between sugar molecules, phosphate ions, and organic bases.
C) It is thought that RNA was the first molecule to serve a catalytic function in the evolution of cells.
D) It is thought that proteins became the primary catalytic molecules in modern cells because their ability to carry out catalytic functions is superior to that of RNA.
E) It is thought that the evolution of living cells depended on the chemical evolution of certain biomolecules that serve as building blocks for biomacromolecules.

In Experiments Measuring the Rates at Which Different Monosaccharides Diffuse