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13 terms

Ribosomes, ER, Golgi Apparatus,Lysosomes,Vacuoles Part 3

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ribosomes
site of protein synthesis, where proteins are made; most numerous organelle
How do ribosomes make protein?
protein used within the cell and produced by free floating ribosomes and protein used outside cell produced ribosomes attached to ER
Endoplasmic Reticulum - describe
An extensive membranous network in eukaryotic cells, continuous with the outer nuclear membrane and composed of ribosome-studded (rough) and ribosome-free (smooth) regions.
Endoplasmic Reticulum - purpose or function
small network of tubes inside a cell that substances move along having 2 types - smooth and rough, internal transport system of the cell, modifies proteins, and synthesizes lipids
What are the 2 types of Endoplasmic Reticulum (ER)?
smooth and rough
Rough ER
That portion of the endoplasmic reticulum studded with ribosomes., portion of the ER involved in the synthesis of proteins
Smooth ER
ER that has no ribosomes, synthesis of lipids, phospholipids and steroid sex hormones-help detoxify drugs and poisons (liver cells) involves adding hydroxyl groups to drugs to make soluble and easier to flush from body
Golgi apparatus
stack of flattened sacs that receives materials from the endoplasmic reticulum and then pinch off again and the vesicles travel to various parts of the cell
lysosomes
bag of hydrolytic enzymes htt break down certain materials in the cell and digest substances that cells ingest
vacuoles
spaces in the cytoplasm that store food and water, cell organelle that stores materials such as water, salts, proteins, and carbohydrates
central vacuole
large one associated with plant cells; function as storage, waste disposal, protection, and breakdown of molecules; they help maintain a good water pressure so the cell walls do not wilt in large plant cells
food vacuole
formed as a result of phagocytosis
phagocytosis
process in which extensions of cytoplasm surround and engulf large particles and take them into the cell; CELL EATING; , the process by which a cell engulfs foreign substances or other cells