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chapter 7 cs
chapter 7
| Question | Answer |
|---|---|
| cells | basic unit of life |
| cell theory | fundelamental concept of biology |
| nucleus | large membrane enclosed structure that contains a cell genetic material in a form |
| Eukaryotes | cells that contain a nuclei |
| Prokaryotes | cells that dont have a nuclei |
| organelles | little organs |
| cytoplasm | portion of the cell outside of the nucleus |
| nuclear envelope | surronds the nucleus composed of two membranes |
| chromatin | granular material you can see inside of the nucleus |
| chromosomes | are thread like structures that contain the genetic info that is passed from one generation of cells to the next |
| nucleolus | where the assembly of ribiosomes begin |
| ribosomes | are small rna and protein found throughout the cytoplasm |
| endoplasmic reticulum | is the site where lipid componets of the cell membrane are assembled |
| golgi apparatus | is to motify, sort and package proteins |
| lysosomes | are small organelles filled with enzymes |
| vacuoles | is saclike structure that stores materials such as water, proteins and carbohydrates |
| mitochondria | are organelles that convert chemical energy stored in food into compounds that are more convenient for the cell to use |
| chloroplasts | are organelles that capture energy form sunlight and convert it into chemical energy in a process callled photosynethesis |
| cytoskeleton | a network of protein filaments that helps the cell to maintain its shape |
| centrioles | is located near the nucleus and help organize cell division |
| cell membrane | a thin flexible barrier that surrounds all cells |
| cell wall | a strong supporting layer around the membrane |
| lipid bilayer | is a composition of nearly all cell membranes is a double layered sheet |
| concentration | a solution is the mass of solute in a given volume od solution |
| diffusion | is whern particles move from more concentrated are to a less concentrated |
| equilibrium | when the concentration of the solute is the same throughout a system |
| osmosis | is the diffusion of water through a selectively premeable membrane |
| isotonic | same strength is when water and sugar will be the same on both sides of the membrane |
| hypertonic | more concentrated sugar solution is above strenght |
| hypotonic | dilute sugar solution ore below strenght |
| facilitated diffusion | is the diffusion of glucose across the membrane |
| active transport | cell have to move materials in the opposite direction aggainst a concentration difference |
| endocytosis | is the process of of taking material into the cell by unfolding |
| phagocytosis | "cell eating" extensions of cytoplasm surrounded a particle and package it within a food vacuole |
| pinocytosis | many cells take up liquid from the surrounding environment tiny pockets from along the cell membrane fill with liquid |
| exocytosis | the membrane of the vaculoe surrounding the material fuses with the cell membrane |
| cell specialization | communication and cooperation among cells |
| tissue | is a group of similar cells that preform a particualr function |
| organ | is many groups of tissues that work together |
| organ system | a group of organs that work together to preform a specific function |
Created by:
chavet
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