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17 Cards in this Set
- Front
- Back
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What are ribosomes?
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Sites of protein synthesis
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Describe the composition of ribosomes
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Two subunits (one small one large), each contain RNA molecule and many different proteins.
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What are the two types of pili?
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Fimbriae (attachment to surfaces)
Sex Pilus (transfer DNA between bacterial cells) |
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Definition: Organelle
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a membrane-bound structure in a eukaryotic cell
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Definition: Cytoplasm
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Interior of a prokaryotic or eukaryotic cell
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Definition: Cytosol
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Fluid portion of cytoplasm
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Definition: Endomembrane system
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Network of cell components (plasma membrane, ER, golgi apparatus, vacuole etc)
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The components of the endomembrane system are connected by what? (2)
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physical continuity
vesicles |
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Name three membrane-bound organelles that are not part of the endomembrane system
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Peroxisomes
Chloroplasts Mitochondria |
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What do peroxisomes (or microbodies) do
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Perform reactions in which H2O2 is a byproduct (later converted)
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Do chloroplasts contain ribosomes?
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Yes
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Do mitochondria contain ribosomes?
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Yes
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Definition: Mitochondria
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Sites of aerobic metabolism and ATP synthesis in eukaryotic cells. Has a double membrane.
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Definition: Chloroplasts
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Sites of photosynthesis, found in plants and some protists
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Definition: amyloplasts
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plastid that stores starch
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Definition: chromoplasts
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plastid that stores pigments
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Definition: Endosymbiosis
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a mutually beneficial relationship derived from one cell living inside another cell
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