BIOL 204 Athabasca U- Midterm QUESTIONS WITH ANSWERS.

BIOL 204 Athabasca U- Midterm
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QUESTIONS WITH ANSWERS |\ |\




cell membrane (plasma membrane) - CORRECT ANSWERS
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✔✔phospholipid bilayer that surrounds all cells and
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regulates what enters and leaves the cell
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eukaryote - CORRECT ANSWERS ✔✔A cell that contains a
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nucleus and membrane bound organelles
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nucleoid - CORRECT ANSWERS ✔✔A non-membrane-
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bounded region in a prokaryotic cell where the DNA is
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concentrated.


nucleus - CORRECT ANSWERS ✔✔A part of the cell
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containing DNA and RNA and responsible for growth and
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reproduction


prokaryote - CORRECT ANSWERS ✔✔A unicellular
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organism that lacks a nucleus and membrane bound
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organelles

,amyloplast - CORRECT ANSWERS ✔✔Unpigmented plasids
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that store starch grains, abundent in cells of stems,
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tubers, and seeds |\ |\




anchoring junction - CORRECT ANSWERS ✔✔mechanically
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attaches adjacent cells to each other or to the basement
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membrane


bacterial flagellum - CORRECT ANSWERS ✔✔A ropelike
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structure built from actin proteins that, through rotary
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movements, propels a bacterium through fluid. |\ |\ |\ |\ |\




capsule - CORRECT ANSWERS ✔✔A sticky layer that
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surrounds the cell walls of some bacteria, protecting the
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cell surface and sometimes helping to glue the cell to
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surfaces.


cell wall - CORRECT ANSWERS ✔✔A rigid layer of
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nonliving material that surrounds the cells of plants and
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some other organisms.
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centrosome - CORRECT ANSWERS ✔✔A structure in |\ |\ |\ |\ |\ |\ |\



animal cells containing centrioles from which the spindle
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fibers develop.|\

, chloroplast - CORRECT ANSWERS ✔✔An organelle found |\ |\ |\ |\ |\ |\ |\



in plant and algae cells where photosynthesis occurs
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chromoplast - CORRECT ANSWERS ✔✔a colored plastid |\ |\ |\ |\ |\ |\ |\



other than a chloroplast, typically containing a yellow or
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orange pigment. |\




crista (pl. cristae) - CORRECT ANSWERS ✔✔the folds of
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the inner membrane of mitochondria. The site of the
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electron transport chain |\ |\




cytoskeleton - CORRECT ANSWERS ✔✔A network of fibers |\ |\ |\ |\ |\ |\ |\ |\



that holds the cell together, helps the cell to keep its
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shape, and aids in movement
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endoplasmic reticulum (rough or smooth) - CORRECT |\ |\ |\ |\ |\ |\ |\



ANSWERS ✔✔extensive interconnected network of |\ |\ |\ |\ |\



membranous channels called cisternae, some have |\ |\ |\ |\ |\ |\



ribosomes covering it and others don't. |\ |\ |\ |\ |\ |\




protein and lipid synthesis|\ |\ |\




extracellular matrix - CORRECT ANSWERS ✔✔The |\ |\ |\ |\ |\ |\



substance in which animal tissue cells are embedded,
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consisting of protein and polysaccharides. |\ |\ |\ |\