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Chapter 7 Terms
all vocabulary from chapter 7: Biology
| Question | Answer |
|---|---|
| What is a cell? | Basic unit of life |
| What is cell theory? | a fundamental concept of biology |
| What is a Nucleus? | a large membrane enclosed structure that contains the cells genetic material in the form of DNA |
| What is a eukaryotes? | Cells that contain nuclei |
| What is a prokaryote? | Cells that do not contain nuclei |
| What is organelles? | Little organs |
| What is cytoplasm? | the portion of the cell outside of the nucleus |
| What is a nuclear envelope? | The part that surrounds the nucleus |
| What is chromatin? | Granular material that you can see in the nucleus |
| What are chromosomes? | When a cell divides and chromatin fills in |
| What is nucleolus? | Dense region in the nuclei |
| What is a ribosome? | Small particles of RNA and protein found throughout the cytoplasm |
| What is endoplasmic reticulum? | The internal membrane system that eukaryote cells contain |
| What is golgi apparatus? | Protein produced in the rough ER that move into an organelle |
| What is lyosomes? | small organelles filled with enzymes |
| What are vacuoles? | A saclike structure that some cells contain |
| What is mitochondria? | Organelles that convert the chemical energy stored in food into compounds that are more convenient for the cell to use |
| What is a chloroplast? | organelles that capture the energy from sunlight and convert it into chemical energy in a process called photosynthesis |
| What is a cytoskeleton? | A supporting structure when eukaryotic cells are given their shape and internal organization |
| What are centrioles? | Help organize the cell division |
| What is a cell membrane? | The flexible and thin barrier that surrounds cells |
| What is a cell wall? | A strong supporting layer around the membrane that cells produce |
| What is a lipid bilayer? | The composition of nearly all cell membranes is a double layered sheet |
| What is concentration? | the mass of the solute in a given volume of solution |
| What is diffusion? | When cells move from a more concentrated area to a less concentrated area |
| What is a equilibrium? | When the concentration of a solute is the same throughout a solution |
| What is osmosis? | the diffusion of water through a selectively permeable membrane |
| What is isotonic? | When two solutions become the same strength |
| What is hypertonic? | A very concentrated solution |
| What is hypotonic? | The a solution is very weak and not concentrated |
| What is facilated diffusion? | When cell membrane channels help the diffusion of glucose across the membrane |
| What is actice transport? | When cells must move against a concentration |
| What is endocytosis? | The process of taking material into the cells by means of infolding, or pockets, of the cell membrane |
| What is phagocytosis? | extension of cytoplasm that surround a paricle and package it withing a food vacuole |
| What is pinocystosis? | When tiny pcokets form along the cell membrane, fill with liquid, and to form vacuoles within the cell |
| What is exocytosis? | The membrane of the vacuole surrounding the material fuses with the cell membrane, forcing contents out of the cell |
| What is cell specialization? | When cells thoughout an organism can develop thoughout an organism can develop in different ways to perform different task |
| What is tissue? | a group of similiar cells that perform a particular function |
| What is an organ? | When many tissue groups work together |
| What is an organ system? | A group of organs that work together to perform a specific funtion |
Created by:
filliswillis
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