Part a is a green, leaf-shaped structure = Chloroplast
Part b is a large hollow structure = Vacuole
Part c is the outside lining of the cell = Cell membrane
Part d is a network of hollow tubes, flattened sheets, and round sacs = Golgi apparatus
An organelle is a subcellular structure that, like an organ, has one or more specific jobs to do in the cell. The nuclei, which store genetic information, mitochondria, which produce chemical energy, and ribosomes, which assemble proteins, are among the more important cell organelles.
The cell membrane, also known as the plasma membrane, is found in all cells and serves to separate the cell's interior from the outside environment. The cell membrane is made up of a semipermeable lipid bilayer. The cell membrane controls the transport of materials into and out of the cell.
Chloroplasts are chlorophyll-containing organelles found in plant cells; they are essential for life on Earth because photosynthesis occurs in chloroplasts. Proplastids give rise to chloroplasts, as do chromoplasts, leucoplasts, and other plastids.
A vacuole is a cell organelle that is membrane-bound. Vacuoles are generally small in animal cells and help to sequester waste products. Vacuoles in plant cells help to maintain water balance. A single vacuole can sometimes take up the majority of the interior space of a plant cell.
The Golgi apparatus is an organelle found in most eukaryotic cells. It is also known as the Golgi complex, Golgi body, or simply the Golgi. It is a component of the cytoplasmic endomembrane system that packages proteins into membrane-bound vesicles before they are transported to their destination.
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