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F&L Biology Test One
Field and Lab Biology Test One
| Question | Answer |
|---|---|
| independent variable | variable that can be manipulated; plotted on the x-axis |
| dependent variable | variable that is influenced by the other; plotted on the y-axis |
| compound microscope | two lenses advantages - high magnification and transmitted light disadvantages - expensive and must look at thin or transparent objects used to study bacteria and small plants and animals |
| dissecting microscope | two eyepieces advantages - reflected light and easy to use disadvantage - low magnification Used to examine large, opaque, or whole objects such as rocks and shells |
| microviewer | advantages - very cheap and easy for students to use disadvantages - low magnification and view pictures not real slides |
| handlens | advantages - cheap and portable disadvantages - magnification 5x/10x |
| area | multiply width and length |
| volume of a cube | multiply length, width, and height |
| volume of an irregular object | water displacement - subtract water level without object from water level with object |
| mass versus weight | mass - quantity of matter an object possesses weight - measure of the force of gravity on a given mass |
| balance versus scale | balance - used to find the mass of an object scale - used to measure gravitational attraction (weight) |
| calculating magnification of a compound microscpe | multiply magnification of eyepiece lens and magnification of objective lens |
| reflected light | light reflects off the object and back into the eyepiece used in dissecting microscopes |
| transmitted light | light passes through the object used in compound microscopes |
| proper answers | place a 0 before the decimal and round to two places (example: 0.25) |
| basic unit of linear measurement | meter |
| centi | means 100 |
| milli | means 1,000 |
| micro | 10^-6 |
| bogusch slide | a grid placed a the slide to estimate the size of objects by knowing the size of the field of view |
| parfocal | equal focus - if you can the object in focus under wide-field power you can change to low power and the image will still be visible and nearly in focus |
| permanent slide | use for dangerous or rare organisms, difficult staining process, or specimens that are difficult to prepare |
| wet mount slide | for looking at live organisms; slides are reusable |
| preparing a wet mount slide with a dry object | add a drop of water to the slide with a dropper, place a thin section of the material on the drop, add the cover slip, remove excess water around the slide |
| why do we use stains | stains are used to help us view objects that may have little to no color under the microscope |
| preparing a wet mount slide with an object already suspended in water | place 1 to 2 drops of material on the slide, add stain if necessary, add cover slip, remove excess fluid from around the cover slip |
| zooplankton | animal plankton |
| phytoplankton | plant plankton |
| plankton net | used to collect plankton; place net in the water and drag it, collecting organisms in the small tube at the end |
| animal cells | circular/irregular shaped and only the nucleus is visible |
| plant cells | rectangular shape due to the cell wall, packed tightly, nucleus and the chloroplast can be seen |
| phyto | plant |
| par | even/equal |
| plankton | to wander |
| focal | focus |
| kilo - base - centi - milli - micro - nano | move 3 spaces between each except for centi uni |
| 1 cubic centimeter = | 1 milliliter |
| basic unites | meter, liter, gram |
Created by:
bschult3
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