Kingdom Monera (prokaryotes): which feature is NOT found in members of Monera?
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AOrganelles
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BOrganized cell structure
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CAbility to reproduce
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DAbility to use energy
Answer
Correct Answer: Organelles
Explanation
Introduction / Context:“Monera” (a historical term) grouped prokaryotic organisms such as bacteria and cyanobacteria. A common exam focus is distinguishing prokaryotic from eukaryotic cell features.
Given Data / Assumptions:
- We must find a feature not present in prokaryotes.
- Monera = prokaryotes: no true nucleus and no membrane-bound organelles.
Concept / Approach:Prokaryotes possess cell membranes, ribosomes, DNA (nucleoid region), and can reproduce (binary fission) and metabolize (use energy). They lack membrane-bound organelles (e.g., mitochondria, chloroplasts, ER, Golgi) and a true nucleus.
Step-by-Step Solution:
Identify organelles as membrane-bound structures. Prokaryotes lack these.Recognize that “organized cell structure” can still exist without organelles (cell wall, membrane, nucleoid, ribosomes).Reproduction and energy use are fundamental traits of life present in bacteria.Verification / Alternative check:Any standard biology reference states prokaryotes do not contain membrane-bound organelles, confirming the exclusion.
Why Other Options Are Wrong:
- B: Prokaryotes are organized (cell wall, membrane, cytoplasm, ribosomes).
- C: Bacteria reproduce asexually via binary fission.
- D: Prokaryotes metabolize and use energy (respiration/fermentation).
Common Pitfalls:Assuming that “organized structure” requires organelles; organization exists at multiple levels.
Final Answer:Organelles