Biology · Cell Structure and Function
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Students were asked to give a guess about a unicellular organism with darkly stained nucleus.
Which of the following can be straight away excluded from the list:
- A
Paramecium
- B
Amoeba
- C
Plasmodium
- D
Lactobacillus
Eukaryotes have a definite nucleus and prokaryotes do not. Instead, prokaryotes have a nuclear region called the nucleoid. Among the given options, lactobacillus is only prokaryotic thus it does not have a nucleus. The explanation is given below.
Paramecium is an eukaryote, unicellular with a proper nucleus.
Amoeba is an eukaryote, unicellular with a proper nucleus.
Plasmodium is an eukaryote, unicellular with a proper nucleus.
Eukaryotes have a definite nucleus and prokaryotes do not. Instead, prokaryotes have a nuclear region called the nucleoid. Among the given options, lactobacillus is only prokaryotic thus it does not have a nucleus.
Tagged under Biology · Cell Structure and Function · 2017