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19 Cards in this Set
- Front
- Back
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Robert Hooke |
an english scientist who was the first to discover cells and write them down |
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homostasis |
ability to maintain a steady state in the cell |
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1. the message encoded in DNA in the nucleus 2. the ratio between the surface area of the cell and its volume |
some factors that limit the size of a cell |
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multicellular organism |
made of many cells, |
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colonial organism |
collection of similar cells living together |
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unicellular organism |
organisms that are composed of just one cell |
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tissue |
group of similar cells that work together to carry out a specific function |
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organ |
composed of several types of tissues working together to perform a specific function |
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eukaryotic cell |
membrane-bound nucleus and both membrane- and non-membrane bound organelles |
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prokaryotic |
this cell lack a membrane around their nuclear area and contain only non-membrane-bound organelles |
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nucleus |
control center of the cell , the site where DNA replication and RNA transcription take place |
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cell walls |
rigid or nearly rigid structure that is located on the outside of the cell membrane- PLANT CELLS HAVE THEM |
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cell membranes |
serves as the outermost boundary of the cell itself, structure that separates the cell from its environment |
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capsule/slime coat |
a cellular secretion surrounding certain algae and bacteria |
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ribosome |
non-membrane-bound organelle found in both prokaryotic and eukaryotic cells- composed of proteins and multiple strands of RNA- lines up the amino acids during the production of proteins |
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Golgi apparatus |
flattened, curved, membrane-covered sacs. deals with synthesis and packaging of materials |
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turgor presure |
the added pressure within a plant cell that results from the movement of water into the central vacuole |
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nucleolus
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Where are ribosomes partially assembled?
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becomes inactive |
What happens when a cell goes beyond its optimal range? |
