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91 Cards in this Set
- Front
- Back
8 characteristics of life |
Cells, organization, reproduce, energy, respond, change throughout time, homeostasis, grow |
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Cell |
Basic unit of life, smallest considered living |
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Multicellular |
More than one cell |
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Unicellular |
One cell |
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Prokaryotic |
No nucleus (bacteria) |
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Eukaryotic |
Do have a nucleus |
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Tissue |
Group of cells w/ similar abilities, allow an organ to function |
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Organ |
Structure made of a group of tissues that carry out a job w/in organ system |
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Organ system |
A group of organs working together to carry out a function within an organism |
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Stimulus |
An event that evokes a response in a living organism, physical or chemical change, internal or external environment |
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Response |
The direct reaction caused by the stimulus |
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Homeostasis |
Stable internal environment that the body strives to maintain |
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Metabolism |
The breakdown of nutrients to create energy |
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Autotroph |
Create own energy |
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Heterotroph |
Gain energy through metabolism (consumer) |
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Photosynthesis |
Sunlight converted into energy |
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Growth |
Cell division and development (enlargement) |
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DNA |
Heredity info, what is transferred during sexual reproduction |
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Gene |
A trait, short segment of DNA containing genetic code for one trait |
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Sexual reproduction |
Takes 2 organisms |
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Asexual reproduction |
Only one cell or organism |
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Zygote |
First cell of a multicellular organism |
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Evolution |
Change over generations, whole species |
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Adaptation |
Change in a living organism to adjust. Individual |
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Natural selection |
Organisms w/ certain traits have higher chance to live and reproduce successfully |
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Where does all life's energy ultimately come from? |
The sun |
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Biology |
The study of life |
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Kingdom |
6 divisions of all living things |
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Domain |
3 major subdivisions of all living things |
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Organelles |
W/in cells, structures that carry out certain functions so the cell can live |
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Biological molecule (molecule) |
W/in organelles, chemical compounds providing structure for movement and energy |
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What are the 6 kingdoms |
Animalia, plantae, fungi, protista, archaea, bacteria |
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What are the 3 domains |
Bacteria, archaea, eukarya |
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2 examples of a heterotroph |
Bacteria , human |
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What are the 11 steps of scientific method? |
1- make observations 2-ask a question/state the problem 3-research and gather info 4-make a hypothesis 5-design an experiment (control etc.) 6-perform experiment 7-make observations again (lab data) 8-record data 9-organize data in graphs 10-make a conclusion 11-share |
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Qualitative data |
Words |
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Quantitative |
Numbers |
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Hypothesis |
A prediction |
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Independent variable |
Only one, what the experimenter changes |
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Dependent variable |
What you measure, effected by independent variable |
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Control group |
Normal condition, used to compare |
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Experimental group |
Changed condition |
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Constants |
Variables that stay the same |
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Inference |
Making a conclusion based on previous knowledge not observation |
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Bias |
Letting what you think influence data/experiment |
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Observation |
Using your senses to collect data |
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How do you fix bias? |
Do multiple trials, use more sources when researching |
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Metric in order |
Tera, 3 giga, 3 mega, 3 kilo, hecto, deka, base, deci, centi, milli, 3 micro, 3 nano, 3 Pico |
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What are the 2 kinds of diaphram? What is the difference? What are they used for? |
Disk diaphragm, iris diaphram. They look different. To control the about of light. |
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Biochemistry |
Chemicals of life |
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Botany |
Plants |
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Genetics |
Heredity |
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Pathology |
Diseases |
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Histology |
Tissues |
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Taxonomy |
Classification or scientific naming |
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Anatomy |
Structure of organisms |
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Cytology |
Study of cells |
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Paleontology |
Fossils |
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Microbiology |
Very small organisms that must be magnified in order to study them |
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Ecology |
The relationship between living things and their environment |
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Zoology |
The study of all animals |
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Exobiology |
Possible extraterrestrial live |
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Anthropology |
Mans cultural habits |
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Biology |
All living organisms |
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Physiology |
Function of living things |
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What is another name for the metric system? Abbreviation? |
SI or international system |
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What are two reasons scientists use the metric or si system |
Easy conversion rate of 10 and it's known internationally |
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What are the advantages to the light microscope? Disadvantages? |
Adv: Better/higher resolution, can be used on living organism, control the amount of light dis: less magnification |
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What are advantages of an electron microscope? Disadvantages? |
Adv: more magnification, can see inside 2d or outside 3d images disadvantages: less resolution, can not be living |
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What are the two EMs? (electron microscopes) what kind of image do they produce? How do they work? Highest Mag.? |
SEM: Scanning, 3D of the outside, coat of metal-beam of electrons-project onto fluorescent screen,100,000x TEM: Transmission, 2D of the inside, cut into thin slice-beam of electrons transmitted through the specimen-magnetic lenses enlarge onto a photographic plate or screen, 200,000x |
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Why are EMs (electron microscope) often seen in color? |
Scientists add artificial colors with a computer |
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What are the two LMs (light microscopes)? Why? |
SLM: single: one lense CLM: compound: multiple lenses |
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Who discovered the SLM? CLM? |
SLM: early romans CLM: Jansens |
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How do you properly Carry a microscope? |
Hold by arm, hand on base |
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How do you properly clean microscope lenses? |
In a circular motion with lense paper |
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How do you find the total magnification of a microscope? What is the typical ocular magnification? |
Ocular x objective = total. 10x |
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What are the two reproductions? What do they involve? Example? |
Asexual: one organism. Genetic replica of parent. Bacteria Sexual: two organisms sharing DNA. Combination of parents. Animals and plants |
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Why do all organisms need energy? |
To carry out the characteristics of life |
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What is the piece on a microscope that rotates the objectives? |
Nosepeice |
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What part of the microscope hold the eyepiece or ocular in place? |
Body tube |
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What are 3 scientific terms to describe a human? |
Multicellular heterotrophic eukaryote |
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What are 3 words to describe bacteria? |
Unicellular heterotrophic prokaryote |
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How does growth in organisms occur? |
Cell division and enlargement (development) |
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What is an example of homeostasis? |
Body temperature, blood pressure, water levels, etc |
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Microscope |
Instrument used to see small things |
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Mass |
Amount of matter |
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Volume |
Amount of space |
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Length |
Distance between 2 points |
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Time |
Interval between 2 events |
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Temperature |
Average kinetic energy of molecules |
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Density |
Mass/volume |