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7th grade - cytology
STAR test studying - 7th grade level science - vocabulary - cytology
12
Science
7th Grade
04/18/2012

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Term
Mitochondria
Definition
the "power houses" of the cell, they produce most of the enrgy of the cell using respiration
Term
Endoplasmic reticulum
Definition
these carry proteins and other materials from one part of a cell to the other
Term
Ribosome
Definition
they produce proteins
Term
golgi bodies
Definition
these package up materials and distribute them to other parts of the cell
Term
chloroplasts
Definition
these parts are usually in plant cells, they capture sunlight and make food for the plant using photosynthesis
Term
vacuoles
Definition
it is a storage area
Term
lysosomes
Definition
the break down old cell particles into smaller ones
Term
diffusion
Definition
the process by which molecules tend to move from areas of higher concentration to an area of lower concentration
Term
selectively permeable
Definition
some substances can pass through, while others cannot
Term
passive transport
Definition
the movement of materials through a cell membrane without using energy
Term
active transport
Definition
the movement of materials through a cell membrane using energy
Term
osmosis
Definition
the diffusion of water, transporting water from and into the cell
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