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Grade 8 Organelles

CH 2 Organelles

TermDefinition
CELL MEMBRANE Separates the cell from outside environment. Selectively permeable. Flexible boundary that surrounds the cell. Bi-layer of proteins & lipids
CELL WALL Additional support, protection. Gives cell its shape. Rigid Structure outside plasma membrane. Made of cellulose.
NUCLEUS Controls the cell activities. Contains DNA (directions to make proteins).
NUCLEAR MEMBRANE Allows material to move into & out of Nucleus (RNA pass through pores). Double membrane layer that surrounds nucleus.
CHROMATIN Condenses to form chromosome at the time of cell division.Granular material within nucleus. DNA bound to protein
CHROMOSOME Blueprint - controls cell activity. Pass on genetic info to next generation. Distinct threadlike. Contains genetic info.
NUCLEOLUS Assembly of ribosomes take place here. Small dense region in nucleus.
CYTOPLASM Chemical reactions take place here.
RIBOSOME Site of protein synthesis. Tiny , abundant. Made of RNA & Protein.
ENDOPLASMIC RETICULUM Connects membran, Moves material, Process protein. Smooth E.R. – production & storage of carbs & lipid. Highly folded membrane in cytoplasm. Rough E.R. (ribosome). Smooth E.R. (no ribosomes).
GOLGI BODIES Sorts & packs protein into vesicles & transports them. Flattened stack of tubular membrane. Found near cell membrane.
LYSOSOME Digests food, bacteria, worn out organelle. Contains digestive enzymes.
VACUOLE Stores food, enzyme, and other material Support. Sac (membrane bound).
MITOCHONDRION Power house of cell – produces energy for growth, development, and movement. Double membrane bound organelle.
CHLOROPLASTS Captures light & converts it into chemical energy. Pigment chlorophyll (photosynthesis). Double membrane bound organelle. Pigment chlorophyll is present in inner membrane.
Created by: Bridgerdon
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