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