A science magazine claims that a single-celled organism cannot carry out homeostasis because it has no brain or other coordination centre.
Which statement about homeostasis in single-celled organisms is correct?
Homeostasis also works inside individual cells, so a single cell can regulate its own internal conditions.
A single cell keeps its internal conditions steady only by matching them to its surroundings.
A single cell does not need homeostasis, because its enzymes work equally well at any temperature or pH.
Homeostasis needs a coordination centre such as the brain, so it cannot happen in a single cell.
76 exam-style questions on AQA GCSE Biology 5.1 Homeostasis, covering 5.1 Homeostasis. Each one has a worked solution and a mark scheme showing where the marks go.