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63 Cards in this Set
- Front
- Back
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variable
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single factor which is tested to see its effects in controlled experiment
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probe microscopes
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no lenses, trace surface with tiny tip (probe)
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a biologist is anyone who uses the ___to study living things
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scientific method
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an important goal in science is to be __
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objective
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transmission electron microscope
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beam of electrons, image on fluorescent screen, expose photographic film for permanent image
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SI
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another name for the metric system (International system of units)
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centrifugation
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in device to spin tubes with samples to separate parts of cells (heavy at bottom)
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hypothesis
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possible explanation, preliminary conclusion, guess about some event in nature
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mollecular level-
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ex work with dna, molecules that control work of cells
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symbol-plug
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electrical safety
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scanning electron microscope
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pencillike beam of electrons that scans surface of specimen & they bounce off & picked up by detectors, show realistic 3d pics of surfaces
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the earth is no longer a planet without end. it is more like a __ with living cargo carrying limited amounts of supplies
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spaceship
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limit of resolution
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point where you can't see any more detail
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data
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records of observation or information
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homeostasis
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refers to an organisms ability to maintain constant or stable conditions necessary for life
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symbols-glove
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heat safety
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compound light microscope
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uses both images to form an image, most commonly used, specimen alive,
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weight
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measure of the pull of gravity on that mass
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population level
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groups of organisms-how interact with environment..
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The single most important rule in the lab is simple:
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always follow your teacher's & textbooks instructions exactly
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microscopes
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instruments that produce larger than life pics, images, videos
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experimental setup
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identical to the control experiment except for one factor (the variable) to see the effects of that variable on the thing being tested
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fractionation
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breaking apart cells in a blender
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how to study science
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1-not as memorization of list of separate facts
2- science is a process |
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global level
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on global scale, effects of burning coal & oil on animals
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asexual reproduciton
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single organism can reproduce without the aid of another
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microdissection
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used to remove parts of cell but also insert parts
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metric system
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decimal system based on certain standards and scaled on multiples of 10
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cellular level-
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ex-functions of different cells, effects of cells
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symbols- goggles
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fire safety
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cell cultures
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single cell in dish with nutrients for cell, cell reproduces so that the population grows
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scientific method
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by claude villee-observe & state problem, form hypothesis, test hypothesis, record & analyze data, form conclusion, replication of work
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the prcoess by which organisms respond to stimuli in ways that keep conditions in their body suitable for life is called ___
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homeostasis
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symbol-whale shape??
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animal safety
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multicellular level-
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changes within animals, fossils & evolution
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symbols-beaker
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glassware safety
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electron microscopes
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limit of resolution about 1000 times finer than light microscope, uses electromagnets to bend streams of electrons to form image, dead, very thin specimen, specimen in vaccuum
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symbols-poison bottle
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chemical safety
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theory
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powerful, time-tested concepts that make useful and dependable predictions about the natural world (more than hypotheses)
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length of SI
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meter (m)
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science
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the word that we apply to the process ofarranging observations or tests to learn causes of natural things
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scientists use the ___ of length, volume, mass, and temperature when describing experiments and data
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metric system
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mass
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measure of the amount of matter in an object (kg) kilogram
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milli means...
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one thousandth
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all living things: (5 things)
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1-are made of cells
2-reproduce 3-grow and develop 4-obtain and use energy 5-respond to their environment |
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Scientific knowledge is a ___ body of observations
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constantly changing
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multicellular
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organisms with MANY cells
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symbol-column type thing
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sharp instrument safety
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mass is ___ but wieght is ___
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static, dynamic
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volume of SI
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liter (L) for liquids or the cubic centimeter (CC, or cm^3) for solids
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temperature of SI
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celsius scale (C) where water freezes at 0 and boils at 100.
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control setup
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thing in experiment which is not tested on but rather compared to with the tested thing to see the differences or similarities
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symbols- eye
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eye & face safety
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development
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cycle of change living things go through
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goal of science
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is to understand the world around us
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unicellular
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oraganism with only one cell
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sexual reproduction
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requires 2 cells from different individuals unite to produce the first cell in new organism
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stimulus
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anything in the envirionment that causes the organism to react
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metabolism
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total sum reactions in the body-the balance of anabolism and catabolism
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catabolism
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final breakdown of complex substances into simpler ones, usually resulting in the release of energy
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aging
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process of development
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photosynthesis
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the way plants obtain energy
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anabolism
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any process in a living thing that involves putting together or synthesizing complex substances from simpler substances
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