The cell membrane functions as a selective barrier. We call these kind of membranes as differentially permeable or semi permeable membrane. It can decide what substances can pass in and out. Therefore it can surround the cytoplasm (which is the inside of a cell) to separate the cell's content from the surroundings.
Photosystems<span> are functional and structural units of </span>protein complexes<span> involved in </span>photosynthesis<span> that together carry out the primary </span>photochemistry<span> of </span>photosynthesis<span>: the </span>absorption of light<span> and the transfer of </span>energy<span> and </span>electrons<span>.</span>
Answer:
Luzon Island, in the Philippines has the greatest number of unique animal species.
Explanation:
Researchers have shown that out of 56 species of non-flying mammal species that are now known to live on the island, 52 live nowhere else in the world. Of those 56 species, 28 were discovered during the course of the project. Nineteen of the species have been formally described in scientific journals, and nine are currently “in the works.” Currently 93% of the island's land land mammals have been found no where else.
Thea Answer is I think 77