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23 Cards in this Set
- Front
- Back
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What is the temp. that psychrophiles will grow? |
-10 to 20 degrees C |
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What is the temp. that mesophiles will grow? |
10 to 50 degrees C |
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What is the temp that thermophiles will grow? |
40 to 70 degrees C |
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In what environment will acidophiles grow in? |
0-7 pH |
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In what environment will alkalophiles grow in? |
7-14 pH |
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What is an isotonic solution? |
Having equal concentration on both sides of the membrane |
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What is hypotonic? |
Having a lesser concetration than the solution inside the cell. |
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What is hypertonic? |
Having a greater concentration than the solution inside the cell |
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What is osmosis? |
The diffusion of water through a semi-permiable membrane from a lower to a higher concentration of molecules. |
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What is osmotic pressure? |
The pressure required to stop the inward flow of water across the membrane. |
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What causes crenation of cells? (shrinking) |
A hypertonic solution |
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What solution causes a cell to lyse? (burst) |
A hypotonic solution |
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What are protoplasts? |
Cells that have had their cell wall removed |
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How do you make protoplasts? |
Put bacteria in penicillin |
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What are halophiles? |
Bacteria that live in high salt concentrations (an extremophile) |
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How do Halophiles counteract osmotic pressure on salty and sugary foods? |
They actively pump water into the cell |
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What do chemoheterotrophs use for energy? |
Organic carbon sources like sugars |
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What do photoautotrophs use for energy? |
Sunlight and CO2 (inorganic Carbon) to make sugars |
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What do aerobes use to make energy in the ETC and what is the final product? |
Oxygen and picks up Hydrogens to make the final product of H2O |
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What do anerobes use to make energy in the ETC and what are its final products? |
Inorganic compounds like sulfur and it ferments to make H2S or ethanol or vinegar. |
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What do some plat root nodule food sources do that benefit us when we eat them. (peanuts, peas) |
Fix N2 from atmosphere to make amino acids that we eat. |
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What is needed to make some enzymes catalytic? |
trace metals like Fe, Mo, Cu as cofactors |
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What would you use thyoglycolate media for? |
anerobic cultures |
