THE EXAMS POINTInside a eukaryotic cell
Begin at the centre. Explore a branch, explain its connection, then test your recall. Tap any branch heading to fold or expand it.
In recall mode, focus or tap a branch to reveal its explanation. Branches group related ideas; they do not imply a chronological sequence.
Inside a eukaryotic cell
01 · Plasma membrane
Selectively controls movement across the cell boundary.
02 · Nucleus
Contains most of the cell’s DNA; the nucleolus contributes to ribosome assembly.
03 · Mitochondrion
Supports aerobic ATP production; it is not the only site where ATP is formed.
04 · Rough ER
Membranes with bound ribosomes involved in secreted and membrane proteins.
05 · Golgi apparatus
Modifies, sorts and packages cell products.
06 · Cytoplasm
Includes cytosol and cellular structures outside the nucleus.
Connect the branches
Read this as a simplified animal-cell schematic, not a scale drawing. Plant cells also have a cell wall, plastids and a large central vacuole.
Avoid the exam trap
Prokaryotes lack a membrane-bound nucleus but still contain DNA and ribosomes.
Test yourself: Does a bacterium lack genetic material because it has no nucleus?
No. Its DNA is present in a nucleoid region, without a nuclear envelope.
A concise revision aid with simplified connections. It supports the full chapter and primary references; it does not replace them.