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Grade 7 Unit 2 vocabulary life, cells and photosynthesis
unit 2 assessment essentials of life, cells and photosynthesis
17
Science
7th Grade
10/24/2013

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Term
Nucleus
Definition
controls the activities of the cell
Term
Endoplasmic reticulum
Definition
allows movement of substances througout the cell
Term
Ribosomes
Definition
make proteins for the cell
Term
cytoplasm
Definition
fluid like substance that contain all the organelles of the cell
Term
mitochondria/mitochondrion
Definition
organelle that produces energy for the cell
Term
chloroplast
Definition
organelle that collects energy from the sunand uses it to make food for the cell
Term
lysosomes
Definition
organelle that contains digestive enzymes that help break down materials in the cell
Term
vacuole
Definition
organelle that stores food, water, and nutrient for the cell until they are needed
Term
cell wall
Definition
provides structure and support for the cell
Term
osmosis
Definition
the diffusion of molecules through a selectively permeable membrane from an area of high concentration to an area of lower concentration
Term
diffusion
Definition
the process of diffusing water molecules from an area of higher concentration to an area of lower concentration
Term
equilibrium
Definition
equal concentration of molecules inside and outside of the cell
Term
active transport
Definition
cellular movement that requires cellular energy
Term
passive transport
Definition
cellular movement that does not require cellular energy
Term
photosyntheisis
Definition
the process by which a cell captures the enrgy from the sun and uses it to make food
Term
respiration
Definition
the process by which cells withdraw energy from glucose
Term
photosyntheisis
Definition
a series of chemical reactions that convert light energy, water, and carbon dixiode into the food energy molecule glucose and give off oxygen
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