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Biology Unit 1

Unit 1 Organelles

Nucleus -Found in eukaryotic cells -Has a double membrane -Control the cells activities -Contain the cells DNA -Hold instructions for making new cells/organisms
Nucleolus -Found in eukaryotic cells -Sits inside the nucleus -Produces ribosomes
Nuclear Envelope -Found in eukaryotic cells -Provides a structural framework for the nucleus -Controls the movement of substances in and out of the cell
Nuclear Pores -Found in eukaryotic cells -Protein lined channel found in the nuclear envelope -Regulates the transportation of molecules between the nucleus and the cytoplasm
Cell Wall -Found in both eukaryotic (plant only) and prokaryotic cells -They are rigid and strong -Support the cell
Cell Membrane -Found in only eukaryotic cells -Controls the movement of materials in and out of the cell -Acts as a barrier
Cytoplasm -Found in both eukaryotic and prokaryotic cells -Clear, thick jelly-like substance -Contains the organelles -Chemical reactions takes place here
Ribosomes -Found in both eukaryotic and prokaryotic cells -Can be found floating around the cytoplasm (E+P) -Can be found attached to the rough ER (E) -Where protein synthesis takes place
Mitochondria -Found in eukaryotic cells -Bean shaped organelles found in the cytoplasm -Where respiration takes place
Vacuole -Found in eukaryotic cells -Fluid filled sac used to store food, water, and waste -Used to keep the cell rigid in plant cells
Lysosome -Found in eukaryotic cells (rarely plants) -Found in the cytoplasm and contain degradation enzymes -Digests things such as old cell parts
Chloroplasts -Found in eukaryotic cells (plants only) -Contain chlorophyll -Where photosynthesis takes place
Golgi Body -Found in eukaryotic cells -Responsible for manufacturing, storing and shipping cellular products
Peroxisomes -Found in eukaryotic cells -Contain enzymes to help break down fatty acids and substances
Rough Endoplasmic Reticulum -Found in eukaryotic cells -Involved in the storage and transport of proteins synthesized by the ribosomes attached
Smooth Endoplasmic Reticulum -Found in eukaryotic cells -Involved in the production & metabolism of fats and steroid hormones
Centrioles -Found in eukaryotic cells (animal only) -Small set of micro tubules -Play a major part in mitosis
Cytoskeleton -Found in eukaryotic cells -Structure that helps maintain a cells shape & internal organisation -Provides mechanical support -Helps cells carry out functions such as movement and division
Created by: deannarosee