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GED Life Science

Lessons 1-2 Cell Structures/Functions/Processes/Energy

TermDefinition
cell the basic unit of life
unicellular consists of a single cell (such as bacteria and protozoa)
multicellular consists of multiple cells (such as plants and animals)
cell membrane a structure that keeps the cell's contents separate from its external environment
cytoplasm a watery, jellylike substance that can include other cell structures
genetic material coded instructions for carrying out the cell's activities
prokaryotes bacteria
nucleus contains genetic material that directs the activities of the cell
eukaryotic cells a cell that contains the genetic material within a nucleus (all plant and animal cells)
cell wall gives the cell shape and rigidity (in a plant cell)
chloroplasts absorb sun's energy for the production of food (in a plant cell)
vacuole stores water, nutrients, wastes, and other substances (in a plant cell)
ribosomes produce proteins (in a plant cell)
mitochondrion cell's energy is produced here (in a plant cell)
photosynthesis a process where green plants, some algae, and some bacteria use energy from sunlight to make food (oxygen is a by-product)
glucose a simple sugar
chlorophyll a pigment that gives plants their green color
carbohydrates As a result of photosynthesis, a place where energy is stored
cellular respiration A process in which carbohydrates are broken down to release energy (carbon dioxide is a by-product)
Created by: jpiittmann