| A | B |
|---|
| cell wall | the rigid, porous outer layer of a plant cell |
| centriole | a bundle of microtubules that helps organize the movement of chromosomes during cell division. |
| chloroplast | an organelle that converts the radiant energy of the Sun into chemical energy through the process of photosynthesis. |
| cytoplasm | a jelly-like substance, composed mainly of water, occupying most of the space between the cell membrane and the nucleus. |
| endoplasmic recticulum | a network of passageways in which chemical compounds are manufactured, processed, and transported. |
| golgi apparartus | – a stack of membranes that collects, modifies, and packages chemical compounds. |
| lysosome | a small sac that contains digestive chemicals. |
| mitochondria | organelles that, using oxygen, convert nutrients into energy that can be used by the cell. |
| nuclear enveolope | – a double-layered membrane that surrounds and protects the nucleus. |
| nucleolus | – a small body in the nucleus where ribosomes are synthesized |
| nucleus | a round body in the center of the cell that contains DNA and directs the cell’s activities. |
| organelle | – a cell structure that performs a specific function. |
| plasma membrane | a double-layered membrane that surrounds the cell. Also called the cell membrane, it regulates what enters and leaves the cell. |
| plastid | small structure that can store food (leucoplast) or pigment (chromoplast). |
| ribosome | tiny structure where proteins are synthesized. |
| vacuole | sac that stores water, nutrients, and other chemicals. The large vacuole found in plant cells helps the cells maintain their shape. |
| vesicle | small package of nutrients or proteins created by the Golgi apparatus. |
