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23 Cards in this Set
- Front
- Back
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As cells get larger, the ratio of the surface area to their interal volume gets _____
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smaller
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Ribosomes are the cites of
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protein synthesis
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Organisms in the domains of bacteria and archaca have _________ cells while organisms in the domain Eukarya have ______ cells
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prokaryotic, eukaryotic
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The DNA of prokaryotes is concentrated in a region called the ______. But unlike eukaryotic cells no membrane separates this region from the rest of the cell
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Nucleoid
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Prokaryotic cells only contain
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a nuceoid, cell wall, capule, fagella and pilli
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What is the difference between eukaryotic cells in plants and animals?
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plants have a cell wall, vacuoles, and chloroplasts. Animals have centrioles
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A DNA-protein complex is referred to as a
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chromatin
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The nucleus is surrounded by a _______ and has _____ to allow macromolecules to pass through it
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Nuclear envelope;pores
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The nucleoli is the site of
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ribosome synthesis
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Ribosomes are the site of protein synthesis in the _________
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cytoplasm
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The endoplasmic reticulum has rough er and smooth er. Rough er __________ and smooth er is the location where _____ _______ are modified and where _______ are synthesized.
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deals with proteins; toxic chemicals are modified; lipids are synthesized
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The golgi apparatus
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packages and secretes synthesized proteins for delivery
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Lysosomes
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specialize in digesting macromolecules for recycling
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Mitochondria are the ________ of all eukaryotic cells. They function in the production of ___.
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powerhouse; ATP
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The mitochondria is a _______ membrane organelle that contains ___ and ________. This developes the view that ...
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double; DNA; ribosomes; it originated as a prokaryotic cell
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Chloroplasts are the site of ____ _______ in plants
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photosynthesis
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The chloroplast is a ______ membrane organelle that contains ___ and ________. This develops the view that....
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Double; DNA; ribosomes; it originated as a prokaryotic cell
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The cytoskeleton provides _________ and _________ for cells. What are the three components of the cytoskeleton?
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movement; structure. intermediate filaments, microtubules, and microfilaments
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Microtubules consist of?
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tubulin proteins
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Intermediate filaments are composed of?
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keratin proteins
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Microfilaments composed of?
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actin proteins
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what are Plasmodestata
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"holes" in cell walls through which the cytoplasm of adjacent cells are connected allowing small molecules to pass from cell to cell
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what is collagen?
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a glycoprotein that helps to hold cells together and gives specialized tissues unique structural proteins
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