Which statement below regarding membrane structure and membrane transport is true? Increasing the proportion of unsaturated fatty acids of membrane phospholipids would be most likely to occur as environmental temperatures become warmer. Cyclization of membrane phospholipidfatty acids (like cyclopropane) would confer more rigid, straighter hydrocarbon chains Membrane lipids of by hyperthermophilicarchaebacteriaare of the ester-linked fatty acid type also found in non-archaebacteria and eukaryotemembranes, respectively. Cell wall-containing bacteria and archaea tend to possess a slightly hypotonic interior to create a positive turgor pressure thereby helping it to maintain cell shape and form. Group translocationis a transport mechanism that moves molecules via facilitated diffusion.A. Increasing the proportion of unsaturated fatty acids of membrane phospholipids would be most likely to occur as environmental temperatures become warmer.B. Cyclization of membrane phospholipidfatty acids (like cyclopropane) would confer more rigid, straighter hydrocarbon chainsC. Membrane lipids of by hyperthermophilicarchaebacteriaare of the ester-linked fatty acid type also found in non-archaebacteria and eukaryotemembranes, respectively.D. Cell wall-containing bacteria and archaea tend to possess a slightly hypotonic interior to create a positive turgor pressure thereby helping it to maintain cell shape and form.E. Group translocationis a transport mechanism that moves molecules via facilitated diffusion. Solution The changes in the side chains of fatty acids takes place via cyclization, it helps in rigidifying of the cell membranes that limits passive diffusion of small molecules. Therefore, the most appropriate option is B) Cyclization of membrane phospholipid fatty acids (like cyclopropane) would confer more rigid, straighter hydrocarbon chains.

1. Which statement below regarding membrane structure and membrane transport is true?
Increasing the proportion of unsaturated fatty acids of membrane phospholipids would be most
likely to occur as environmental temperatures become warmer.
Cyclization of membrane phospholipidfatty acids (like cyclopropane) would confer more rigid,
straighter hydrocarbon chains
Membrane lipids of by hyperthermophilicarchaebacteriaare of the ester-linked fatty acid type
also found in non-archaebacteria and eukaryotemembranes, respectively.
Cell wall-containing bacteria and archaea tend to possess a slightly hypotonic interior to create a
positive turgor pressure thereby helping it to maintain cell shape and form.
Group translocationis a transport mechanism that moves molecules via facilitated diffusion.A.
Increasing the proportion of unsaturated fatty acids of membrane phospholipids would be most
likely to occur as environmental temperatures become warmer.B.
Cyclization of membrane phospholipidfatty acids (like cyclopropane) would confer more rigid,
straighter hydrocarbon chainsC.
Membrane lipids of by hyperthermophilicarchaebacteriaare of the ester-linked fatty acid type
also found in non-archaebacteria and eukaryotemembranes, respectively.D.
Cell wall-containing bacteria and archaea tend to possess a slightly hypotonic interior to create
a positive turgor pressure thereby helping it to maintain cell shape and form.E.
Group translocationis a transport mechanism that moves molecules via facilitated diffusion.
Solution
The changes in the side chains of fatty acids takes place via cyclization, it helps in rigidifying of
the cell membranes that limits passive diffusion of small molecules.
Therefore, the most appropriate option is B) Cyclization of membrane phospholipid fatty acids
(like cyclopropane) would confer more rigid, straighter hydrocarbon chains