Which statement about a plasmid is correct?
It is a small ring of DNA that is separate from the main loop of DNA.
It is the main loop of DNA in a bacterial cell.
It is the membrane that controls what enters and leaves the cell.
It is the structure in which proteins are made.
139 exam-style questions on AQA GCSE Biology 1.1 Cell structure, covering 1.1.1 Eukaryotes and prokaryotes, 1.1.2 Animal and plant cells, 1.1.3 Cell specialisation, 1.1.4 Cell differentiation, 1.1.5 Microscopy, and 1.1.6 Culturing microorganisms. Each one has a worked solution and a mark scheme showing where the marks go.