Halophiles cope with high salt concentrations in their environment by accumulating salts within their cytoplasm to achieve osmotic balance. They produce compatible solutes like glycerol and amino acids to do so without disrupting pH or metabolism. Rhodopsins are light-activated proton pumps in microbes that use retinal and include bacteriorhodopsin and halorhodopsin. They help transport ions across cell membranes using light energy.
80 ĐỀ THI THỬ TUYỂN SINH TIẾNG ANH VÀO 10 SỞ GD – ĐT THÀNH PHỐ HỒ CHÍ MINH NĂ...
1.) Main characteristics of Haloarchaea are as followsHalophiles .pdf
1. 1.) Main characteristics of Haloarchaea are as follows:
Halophiles cope up with the osmotic stress through accumulating high salt concentration within
the cytoplasm. This helps in achieving isosmotic balance with the surrounding and maintains the
cell volume. For this purpose the halophiles have some compatible solutes or osmolytes such as
glycerol, sucrose, ecotine, amino acids etc. which accumulate in them without effecting the pH
and metabolic processes. Some halobacteria accumulate potassium chloride to compensate he
outside present sodium chloride salt. The compatible solutes are obtained by biosynthesis,
storage materials or from the medium present outside.
2.) Rhodopsins are retinal binding proteins that acts as light dependent ion transport pump which
uses light energy to move protons outside the membrane. They include bacteriorhodopsin,
archaerhodopsin, halorhodopsin and sensory rhodopsin.
Functions of rhodopsins are as follows:
The importance of rhodopsins are as follows:
Solution
1.) Main characteristics of Haloarchaea are as follows:
Halophiles cope up with the osmotic stress through accumulating high salt concentration within
the cytoplasm. This helps in achieving isosmotic balance with the surrounding and maintains the
cell volume. For this purpose the halophiles have some compatible solutes or osmolytes such as
glycerol, sucrose, ecotine, amino acids etc. which accumulate in them without effecting the pH
and metabolic processes. Some halobacteria accumulate potassium chloride to compensate he
outside present sodium chloride salt. The compatible solutes are obtained by biosynthesis,
storage materials or from the medium present outside.
2.) Rhodopsins are retinal binding proteins that acts as light dependent ion transport pump which
uses light energy to move protons outside the membrane. They include bacteriorhodopsin,
archaerhodopsin, halorhodopsin and sensory rhodopsin.
Functions of rhodopsins are as follows:
The importance of rhodopsins are as follows:
