| A | B |
|---|
| nucleus | control center for cell activities (metabolism, reproduction) |
| endoplasmic reticulum | pathways that allow for transport of materials through cell |
| ribosomes | sites of protein synthesis |
| golgi bodies (golgi apparatus) | stacks of flattened membrane involved in packaging cell products |
| lysosomes | small sacs filled with digestive enzymes |
| mitochondria | double-membraned organelles that produce energy through cell respiration |
| centrioles | pair of cylindrical rings of tubules involved in animal cell division |
| cilia | hairlike projections that move material past the cell |
| flagella | long, hair-like projection that moves like a "whip" and makes the cell move |
| vacuoles | fluid-filled spaces (contain sap in plant cells) |
| chloroplast | organelle found only in plants (contains chlorophyll) |
| cell wall | rigid wall surrounding cell membrane in plants, fungi, and bacteria |
| cell membrane | selectively permeable membrane separating cell from its surroundings |
| cytoplasm | watery or gel-like material between cell membrane and nucleus |
| nucleolus | very dense portion of the nucleus, which produces ribosomes |
| nuclear membrane or envelope | membrane surrounding the nucleus |
| chromosomes | genetic material found in nucleus |
| pores | openings in nuclear envelope that allow substances to leave nucleus |
| microfilaments | solid threads of protein inside cell; allow cell to change shape |
| microtubules | hollow tubes of protein that form cilia, flagella, and centrioles |
| chromatin threads | found in nucleus; consist mainly of DNA |
| cell respiration | breakdown of glucose to produce energy in the form of ATP |
| photosynthesis | producing glucose from carbon dioxide, water, and energy from sun |
| cristae | inner membrane of mitochondria |
| thylakoids | inner membrane of chloroplasts |
| chlorophyll | green pigment found in chloroplasts |
