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27 terms

11 Functions of Cells

STUDY
PLAY
absorption
the transport of dissolved substances into cells
digestion
the breakdown of absorbed substances
respiration
the breakdown of food molecules with the release of energy
excretion
the removal of soluble waste products
egestion
the removal of nonsoluble waste products
secretion
the release of biosynthesized substances
homeostasis
maintaining the status quo
reproduction
producing more cells
biosynthesis
release of substances nesecary for life
movement
movement (relocation) of substances in a cell
irritability
senses and responds to change
animal cell (shape)
circular
plant cell (shape)
square
cell wall
a rigid structure on the outside of certain cells
middle lamella
thin film between the cell walls of adjacent plant cells
plasma membrane
the semipermeable membrane between the cell contents
cytoplasm
a jellylike fluid in the cell
mitochondria
the organelles in which nutrients are converted to energy
lysosome
the organelle responsible for hydrolysis reactions
ribosomes
non-membrane bound organelles responsible for protein synthesis
endoplasmic reticulum
an organelle composed of an extensive network of folded membranes that preforms many tasks such as aiding in the transport of complex cells
rough er
er that is dotted with ribosoms
smooth er
er that has no ribosomes
leucoplasts
organelles that store starches or oils
chromoplasts
organelles that contain pigments used in photosynthesis
central vacuoles
a large vacuole that rests at the center of most plant cells and is filled with a solution that contains a high concentration of solutes
waste vacuoles
vacuoles that contain the waste products of digestion