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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Are the smallest cells in the world.
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Have DNA in a membrane-bound nucleus.
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Are only found in single-celled organisms.
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Only come in one color:navy blue.
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Detailed explanation-1: -In prokaryotes, the DNA (chromosome) is in contact with the cellular cytoplasm and is not in a housed membrane-bound nucleus. In eukaryotes, however, the DNA takes the form of compact chromosomes separated from the rest of the cell by a nuclear membrane (also called a nuclear envelope).
Detailed explanation-2: -A eukaryotic cell (left) has membrane-enclosed DNA, which forms a structure called the nucleus (located at center of the eukaryotic cell; note the purple DNA enclosed in the pink nucleus). A typical eukaryotic cell also has additional membrane-bound organelles of varying shapes and sizes.
Detailed explanation-3: -Eukaryotic cells contain several membrane-bound structures, or organelles, which are specialized cellular subunits that carry out specific cellular functions. The nucleus is surrounded by the nuclear membrane, also called the nuclear envelope, which protects the genetic material stored inside.
Detailed explanation-4: -In eukaryotes, the cell’s genetic material, or DNA, is contained within an organelle called the nucleus, where it is organized in long molecules called chromosomes.
Detailed explanation-5: -The correct answer is (b): DNA in a eukaryotic cell is found in a membrane-bound nucleus.