Cuadro de eukaryotic and prokaryotic cell

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SCIENCE 8

CH1.1  organism: living thing; made up of cells cell: smallest living part of a living thing unicellular: single-celled organisms multicellular: organisms made of many cells Characteristics of all living things: ressponds to its environment, needs energy, grows, reproduces, get rid of wastes that build up its in body compound microscope: combines two lenses light microscope: light to view an object resolving power: microscope helps focus two objects or details that are close together magnification power: microscope makes an object seen larger eyepiece: lens you look through to magnify the image made by an objective lens, magnification power of 10x objective lens: with different magnificaction power to magnify the object stage: platform for the object you view light source: shines light through the object you view arm: supports the eyepiece coarse focus knob: focusses an object at low or medium power fine focus knob: focusses an object at high power power magnification: low power 4x, medium power 10x, high power 40x scanning electron microscope: one type of electron microscope electron micrograph: picture that appears on the camera film or on the screen CH1.2  cell theory: cell is the basic unit of all life, all living thungs are made up of one or more cells, all cells come from other living cells eukaryotic cells: cells with organelles that have a membrane around them; plant cells and animal cells prokaryotic cells: cells that do not have organelles with membranes around them; bacteria--live just about everywhere on Earth that cause diseases viruses: non-living things that must be present inside to able to reproduce; not cells organelles: help the cell to survive; animal cells=plant cells; animal cells don't have a cell wall or chloroplasts cell membrane: like a skin that surrounds the whole cell; it keeps the inside of the cell separate from what is outside it; also controls what enters and leaves the cell nucleus: controls all the cell's activities cytoplasm: clear, jelly-like fluid holds the organelles of the cell in place mitochondria: bean-shaped structures are the energy producers vacoules: store materials such as wastes for a short time; plant cells usually have one large vacoule; animal cells have many cell wall: surrounds the cell membrane of plant cells; give the plant cell protection and supports its box-like shape chloroplasts: green-coloured structures in plant cells trap the Sun's light energy; change it to chemical energy for use by the cell CH1.3 diffusion: particles move from a place where there are more of them into a place where there are fewer of them concentration: amount of substance in a certain place osmosis: difussion of water through a selectively permeable membrane; happens when water particles move from one place where their is concentration is higher to a place where their concentration is lower

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