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Biology Quiz
Parts of the cell
| Question | Answer |
|---|---|
| plasma membrane | the cell's outer boundary |
| cytoplasm | the region of the cell that is within the plasma membrane |
| nucleus | membrane-bound structure; contains a cell's DNA |
| prokaryotes | organisms that lack a membrane-bound nucleus and membrane-bound organelles |
| eukaryotes | organisms made up of one or more cells that have a nucleus and membrane-bound organelles |
| organelles | well-defined, intracellular bodies that perform |
| tissue | a group of similar cells and their products that carry out a specific function |
| organ system | a group of organs that accomplish related tasks |
| phospholipid bilayer | double layer |
| chromosomes | structures in nucleus that make DNA an protein |
| nuclear envelope | made up of two phospholopid bilayers |
| nucleolus | the site in which DNA is concentrated when it is in the process of making ribosomal RNA |
| Ribosomes | organelles made of protein and RNA that direct protein synthesis in the cytoplasm |
| mitochondria | are tiny organelles that transfer engergy from organic molecules to adenosine triphosphate |
| endoplasmic reticulum | is a system of membranous tubs and sacs |
| golgi apparatus | another system of flattened, membranous sacs |
| lysosomes | vesicles that bud from the Golgi apparatus and that contain digestive enzymes |
| cytoskeleton | a network of thin tubes and filaments that crisscrosses the cytosol |
| microtubules | hollow tubesmade of a protein called tubulin |
| microfilaments | long threads of the beadlike protein actin and are linked end to end and wrapped around each other like two strand of a rope |
| cilia | a hairlike structure arranged in tightly packed rows that projects fro mthe surgace of some cells |
| flagella | a long, hairlike structure that grows out of a cell and enables the cell to move |
| centrioles | an organelle that is composed of two short microtubules at right angles to each other and that has an active site role in mitosis |
| cell wall | a rigid layer that lies outsie the cell's plasma membrane |
| central vacuole | a large, fluid-filled organellethat stores not only water but also enzymes |
| plastids | organelles that are surrounded by a double membrane and contain their won DNA |
| thylakoids | a system of flattened, membranous sacs |
| chlorophyll | the main molecule that absorbs light and captures light energy for the cell |
| chloroplasts | plastids that contain colorful pigments |
Created by:
asc1892