Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Ch 1 Intro Cells
| Term | Definition |
|---|---|
| cell | the basic unit of structure and function |
| microscope | An instrument that makes small objects look larger |
| cell theory | A widely accepted explanation of the relationship between cells and living things. |
| cell wall | A rigid supporting layer that surrounds the cells of plants and some other organisms |
| cell membrane | A thin flexible barrier that surrounds a cell and controls which substances pass into and out of a cell. |
| nucleus | In cells, a large oval organelle that contains the cells genetic material in the form of DNA and controls many of the cells activities. |
| organelle | A tiny cell structure that carries out a specific function within the cell. |
| ribosome | A small grain-shaped organelle in the cytoplasm of a cell that produces protein. |
| cytoplasm | The thick fluid region of a cell located inside the cell membrane or between the cell membrane and nucleus |
| mitochrondia | Rod shaped organelles that convert energy in food molecules energy in food molecules to energy the cell can use to carry out its functions. |
| endoplasmic reticulum | An organelle that forms a maze of passageways in which proteins and other materials are carried from one part of the cell to another |
| Golgi apparatus | An organelle in a cell that receives proteins and other newly formed materials from the endoplasmic recticulum, packages them, and distributes them to other parts of the cell. |
| vacuole | A sac like organelle that stores water food and other materials. |
| chloroplast | An organelle in the cells of plants and some other organisms that captures energy from the sunlight and changes it to an energy form that cells can use in making food. |
| lysosome | A organelle which contains chemicals that break down large food particles into smaller ones and that can be used by the rest of the cell. |
| multicellular | Consisting of many cells |
| unicellular | Made of a single cell |
| tissue | A group of similar cells that perform a specific function. |
| organ system | A group of organs that work together to perform a major function. |
| element | A pure substance that cannot be broken down into other substances by chemical or physical means. |
| compound | A substance made of two or more elements chemically combined in a specific ratio or proportion. |
| carbohydrate | An energy-rich organic compound, such as a sugar or a starch, that is made of the elements carbon, hydrogen, and oxygen. |
| lipid | An energy-rich organic compound, such as fat oil or wax, that is made of carbon, hydrogen, and oxygen |
| protein | Large organic molecule made of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. |
| enzyme | A type that speeds up a chemical reaction in a living thing. |
| nucleic acid | A very large molecule made of carbon, oxygen, nitrogen, and phosphorus, that contains the instructions cells need to carry out all the functions of life. |
| DNA | Deoxyribonucleic acid; the genetic material that carries information about an organism and is passed from parent to offspring |
| double helix | The shape of a DNA molecule |
| Selectively permeable | A property of cell membranes that allows some substances to pass across it. |
| passive transport | The movement of dissolved materials across a cell membrane without using cellular energy. |
| diffusion | The process by which molecules move from an area of higher concentration to an area of lower concentration. |
| osmosis | The diffusion of a water molecules across a selectively permeable membrane |
| active transport | The movement of materials across a cell membrane using cellular energy. |
| endocytosis | The process by which the cell membrane takes particles into the cell by changing shape and engulfing the particles. |
| exocytosis | The process by which the vacuole surrounding particles fuses with the cell membrane forcing the contents out of the cell. |
Created by:
jdreslinski002