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Related Flashcards
Cards In This Set
| Front | Back |
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Most of the earth's residents are _______. The most ancient and abundant are the _________.
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Unicellular, bacteria
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What are the 3 main types of microscopes?
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Light, transmission electron, scanning electron
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What is the cell theory?
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New cells are formed from other existing cells, and that the cell is a
fundamental unit of structure, function and organization in all living
organisms.
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Cellular activity is both individual and ________
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Collective
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Cell activity is dictated by _______________
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Sub-cellular structures
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Continuity of life has _________ basis.
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Cellular
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Humans are composed of about __________ cells.
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70 trillion
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Know the fluid mosaic model.
|
 Fluid Mosaic Model |
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Review membrane proteins
|
 Membrane Proteins |
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Know the membrane junctions
|
 Membrane Junctions |
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How does membrane transport work?
|
 Membrane Transport |
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Passive transport means
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Moving biochemicals
and atomic or molecular substances across the cell membrane.
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What are the 4 main types of passive transport?
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1) osmosis
2) simple diffusion 3) facilitated diffusion 4) filtration |
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What is osmosis?
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It is the movement of water across a partially permeable membrane from
an area of low solute
concentration to an area of high solute
concentration. It is a physical process in which a solvent moves,
without input of energy, across a semipermeable membrane (permeable to
the solvent,
but not the solute) separating two solutions of different
concentrations.
Water follows "stuff", usually salt. |
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What is simple diffusion?
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The net movement of substances from a region of high concentration to a
region of low concentration so its overall net movement is along the
concentration gradient. Substances are diffused across the membrane between the phospholipids
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