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Science Unit 3 QR 2

Unit 3: Atoms

TermDefinition
Cell Membrane Found in all cells, made of two layers of lipids (lipid bilayer), is selectively permeable, means that some molecules can pass through this membrane and some cannot.
Nucleus Contains DNA in the form of chromatin, Chromatin DNA that has been slightly packed together, covered by a membrane with pores (holes), allows RNA and ribosomes to leave the Nucleus.
Nucleolus Inner region of the nucleus where ribosomes are produced.
Golgi Apparatus Flattened membrane sacs that “package” and distribute proteins that have been made by ribosomes.
Ribosomes Small organelles that “read” RNA in order to produce peptides (proteins). The proteins are built by joining amino acids together.
Animal Vacuole Small and TEMPORARY sacs that contain water and waste.
Plant Vacuole Large and PERMANENT sac that stores mostly water and some waste.
Mitochondria Produces energy (in the form of ATP) by breaking down food molecules during cellular respiration. Has an outer membrane and an inner membrane
Smooth Endoplasmic Reticulum Produces Lipids, and detoxifies the cell.
Rough Endoplasmic Reticulum Network of connected membranes that help to move proteins and other molecules throughout the cell. Has Ribosomes attached to it.
Lysosomes Small, round organelles that contain digestive enzymes. They break down old organelles and other cellular waste.
Centrosome and Centrioles Produce spindles called microtubules that help animal cells split their DNA (in the form of chromosomes) and pull apart during cell division.
Cell Wall Provides additional structure and support to the cell.
Chloroplast Perform photosynthesis to produce food molecules (Glucose).
Found only in Animal Cells: Lysosomes, Centrioles, Small Vacuole
Found in both Animal and Plant Cells: Cell membrane, Nucleus, Ribosomes, Smooth ER, Rough ER, Golgi Apparatus, Mitochondria, Nucleolus, Nuclear Membrane, Cytoplasm
Found in only Plant Cells: Chloroplast, Cell Wall, Large Vacuole
Created by: mikuleca
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