Eukaryotic cells

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Rough Endoplasmic Reticulum (rER)
Membrane-bound, flattened sacs with ribosomes attached to the outer surface. Proteins are made on these ribosomes and are transported through the ER to other parts of the cell.
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Ribosomes
Made of RNA and protein, these small organelles are found free in the cytoplasm or attached to ER. They are the site of protein synthesis.
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Cell Surface Membrane
Phospholipid bilayer containing proteins and other molecules forming a partially permeable barrier.
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Smooth Endoplasmic Reticulum
Like rER, but does not have ribosomes attached to it. Smooth ER makes lipids and steroids (e.g. reproductive hormones)
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Golgi Apparatus
Stacks of flattened, membrane-bound sacs formed by fusion of vesicles from the ER. Modifies proteins and packages them in vesicles for transport.
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Lysosome
Spherical sacs containing digestive enzymes and bound by a single membrane. Involved in the break-down of unwanted structures in the cell, and in destruction of whole cells when old cells are to be replaced or during development.
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Centrioles
Hollow cylinders made up of a ring of nine protein microtubules (polymers of globular protein arranged in a helix to form a hollow tube). Involved in the formation of the spindle during nuclear division and in transport within the cell cytoplasm.
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Mitochondrion (pl. mitochondria)
The inner of its two membranes is folded to form finger-like projections called cristae. The mitochondria are the site of the later stages of aerobic respiration.
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Nucleus
Enclosed by an envelope composed of 2 membranes perforated by pores. Contains chromosomes and a nucleolus. Chromosomes made of DNA contain genes that control the synthesis of proteins.
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Nucleolus
A dense body within the nucleus where ribosomes are made.
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Other cards in this set

Card 2

Front

Made of RNA and protein, these small organelles are found free in the cytoplasm or attached to ER. They are the site of protein synthesis.

Back

Ribosomes

Card 3

Front

Phospholipid bilayer containing proteins and other molecules forming a partially permeable barrier.

Back

Preview of the back of card 3

Card 4

Front

Like rER, but does not have ribosomes attached to it. Smooth ER makes lipids and steroids (e.g. reproductive hormones)

Back

Preview of the back of card 4

Card 5

Front

Stacks of flattened, membrane-bound sacs formed by fusion of vesicles from the ER. Modifies proteins and packages them in vesicles for transport.

Back

Preview of the back of card 5
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