THE CELL
STRUCTURE AND FUNCTION OF THE CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a covering called a plasma membrane that surrounds the cell and controls what information and materials enter and leave it
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an internal fluid that gives shape to the cell and supports the other things within it
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either a central zone or a nucleus that contains the cell’s genes
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All of the above
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Detailed explanation-1: -It includes features from all cell types. A cell consists of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm.
Detailed explanation-2: -Although cells come in diverse shapes, all cells have certain parts in common. These parts include the cell membrane, cytoplasm, ribosomes, cytoskeleton, and DNA.
Detailed explanation-3: -Because protein synthesis is an essential function of all cells, ribosomes are found in practically every cell type of multicellular organisms, as well as in prokaryotes such as bacteria. However, eukaryotic cells that specialize in producing proteins have particularly large numbers of ribosomes.
Detailed explanation-4: -Only the cells of advanced organisms, known as eukaryotes, have a nucleus. Generally there is only one nucleus per cell, but there are exceptions, such as the cells of slime molds and the Siphonales group of algae. Simpler one-celled organisms (prokaryotes), like the bacteria and cyanobacteria, don’t have a nucleus.