EVERYDAY SCIENCE

SCIENCE

CELL BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is not found in a prokaryotic cell?
A
cytoplasm
B
nuclear membrane
C
DNA
D
enzymes
Explanation: 

Detailed explanation-1: -Final answer: The structure which is not found in a prokaryotic cell is the nuclear membrane.

Detailed explanation-2: -A prokaryotic cell lacks a well developed nucleus. The nucleus does not has nuclear membrane.

Detailed explanation-3: -Prokaryotes lack a defined nucleus (which is where DNA and RNA are stored in eukaryotic cells), mitochondria, ER, golgi apparatus, and so on. In addition to the lack of organelles, prokaryotic cells also lack a cytoskeleton.

Detailed explanation-4: -Answer and Explanation: The structure that would not be found in a prokaryotic cell is b) a nucleus. Prokaryotic cells are very simple in structure, and include a cell membrane, chromosomes, ribosomes and sometimes flagella.

Detailed explanation-5: -Prokaryotic cells, such as bacteria, have a free-floating chromosome that is usually circular and is not enclosed in a nuclear membrane. Instead, the DNA simply exists in a region of the cell called the nucleoid. Prokaryotic cells only have a small range of organelles, generally only a plasma membrane and ribosomes.

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