Term
| what is the dissecting microscope used for? |
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Definition
| to examine relatively large specimens, usually speciments you can see with your unaided eye, but need to view in greater detail. |
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Term
| What kind of materials best viewed with the dissecting microscope? |
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Definition
| opaque (not transparent) and too thick to be mounted ona microscope slide for viewing with a light micrscope. |
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Term
| What does the disssecting microscope enable us to see? |
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Definition
| otherwise invisible details of visible objects. |
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Term
| how do you distinguish a dissecting microscope from a light microscope? |
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Definition
| they fewer lenses, nobs and moving parts. |
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Term
| Name the parts of a dissecting microscope |
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Definition
| ocular lenses, objective lens, magnification zooming knob, focus knobs and stage. |
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Term
| when do you know that the ocular lenses of a dissecting microscope are properly adjusted? |
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Definition
| when you see a single circular viewing area through them |
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Term
| what are light microscopes used to observe? |
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Definition
| very tiny samples, which are thin and translucent so tht light can easily pass through them |
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Term
| list the parts of a light microscope |
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Definition
| ocular lenses, lens turret, objective lenses, coarse and fine focues knobs, mechanical stagte, slide clip, slide positioning knobs, iris diaphragm, light switch and lamp ower adjustment |
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Term
| what is the total maginification of a light microscope? |
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Definition
| the product of the power of the ocular lenses times the power of the objective lens. so a 10 occular with a 4 objective = 40x magnification or 40 times larger than life. |
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Term
| what three structures do plants have that animal cells do not |
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Definition
| thick cell walls, central vacuole and chlorplasts |
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Term
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Definition
| using a liquid on a slide before placing in the microscope can be water or dye. |
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Term
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Definition
| tiny green ovals with boxlike cells of plants. these structures perform phosynthesis. |
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Term
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Definition
| protozoan downer that slows fast-moving organisms |
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Term
| what is the most diverse and complex ecosystem inte hocean |
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Definition
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Term
| biological definition of organic |
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Definition
| material made by living organisms |
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Term
| How does digestion differ from emulsification |
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Definition
| emulsification does not break apart molecules...they remain wholoe, but in smaller groups. Digestion breaks down molecuels into their compenent parts. |
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Term
| are all catalysts enzymes? |
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Definition
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Term
| are all enzymes catalysts |
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Definition
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Term
| are all enzymes globular proteins |
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Definition
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Term
| the region of an enzyme that specificall fits the substrate is called the |
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Definition
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Term
| is the optimum pH for rennet acidic or basic |
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Definition
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Term
| where in the body does rennet normally functon |
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Definition
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Term
| is coagulation and cooking done at 32-38 C because: a)all enzymes function best at higher temperatures or b) this is the tmeperature of a calf's stomach |
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Definition
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Term
| Could lipase be substituted for rennet in cheese production |
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Definition
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Term
| is denaturation always reversible |
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Definition
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Term
| enzymes function a) primarily in digestion or b) in all catalyzed cellular reactions |
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Definition
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Term
| something that speeds up the rate of a chemical reaction without being used up or changed in the process is called a |
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Definition
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Term
| globular proteins that act as biological catalysts allowing the chmical reactions of living organisms to proceed smoothly and efficiently are called: |
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Definition
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Term
| breaking neutral fat molecules (neutral pH) into their coponent parts, fatty acids and glycerol, is calle |
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Definition
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Term
| the chemical breakdown of a polymer into monomers by the chemical addition of water is called |
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Definition
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Term
| the chemcial reactions of living organisms are collectively called |
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Definition
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