Flashcards in Chapter 3 Deck (6):
structure that encloses the contents of a cell and allows the movement of some materials in and out
central part of an atom, made up of protons and neutrons. Also roundish structure inside a cell that acts as the control centre for the cell. Plural = nuclei.
the fluid found inside cells
a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants. In the algae and higher plants it consists mainly of cellulose.
oval-shaped organelle found only in plant cells. Chloroplasts contain the pigment chlorophyll. They are the ‘factories’ in which carbon dioxide and water are changed by sunlight and water into food by the process of photosynthesis.