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Bio CH2

Biology CH2 Features of Life and the Cell

TermDefinition
adaptation a trait that makes a living thing better able to survive
cell the basic unit of all living things
cell membrane the cell part that gives the cell shape and holds the cytoplasm
cellular respiration the process by which food is broken down and energy is released
cell wall the thick, outer covering outside the cell membrane
centriole cell parts that help with cell reproduction
chloroplast cell parts that contain the green pigment, chlorophyll
chromosome cell parts with information that determines what traits a living thing will have
consumer living things that eat, or consume, other living things
cytoplasm the clear, jelly-like material between the cell membrane and the nucleus that makes up most of the cell
development all the changes that occur as a living thing grows
diffusion the movement of a substance from where there is a large amount of it to where there is a small amount of it
mitochondria cell parts that produce energy from food that has been digested
nuclear membrane a structure that surrounds the nucleus and separates it from the rest of the cell
nucleolus the cell part that helps make ribosomes
nucleus the cell part that controls most of the cell’s activities
organ a group of tissues that work together to do a job
organism a living thing
organ system a group of organs that work together to do a certain job
osmosis the movement of water across the cell membrane
producer living things that make, or produce, their own food
reproduce to form offspring similar to the parents
ribosome cell parts where proteins are made
tissue a group of similar cells that work together to carry out a special job
vacuole a liquid-filled space that stores food, water and minerals
 



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