Cells
⏱ ~3-min readAceMark Guide
What this topic is really about
Viruses are non-living, non-cellular entities that lack the metabolic machinery to replicate independently, meaning they must hijack a host cell's organelles to synthesize viral components. In contrast, binary fission is a method of asexual reproduction used by prokaryotes, while mitosis occurs in eukaryotes.
Centrioles are organelles involved in organizing the mitotic spindle during cell division, and they are typically found in animal cells but absent in land plants. Conversely, cell walls and chloroplasts are characteristic structures of plant cells that are never found in animal cells.
See the mechanism
Centrioles are organelles involved in organizing the mitotic spindle during cell division, and they are typically found in animal cells but absent in land plants. A diagram for this topic isn't available yet — the worked example below walks the same reasoning step by step.
An exam-style question, fully explained
Which is NOT found in plant cells but is in animal cells?
- Identify what the question tests: Which is NOT found in plant cells but is in animal cells.
- Centrioles are organelles involved in organizing the mitotic spindle during cell division, and they are typically found in animal cells but absent in land plants.
- Conversely, cell walls and chloroplasts are characteristic structures of plant cells that are never found in animal cells.
Traps the examiner sets
- However, they still possess ribosomes for protein synthesis and DNA as their genetic material, meaning they do not lack these essential components.
- Anaphase is incorrect because it is the subsequent phase where sister chromatids are actually pulled apart toward opposite poles.
Test your recall
Answer each from memory — you'll see instantly whether you're right and why.
Run a focused 10-question mini-mock on Cells and see it stick.
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