Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Biology Final Semest
cumulative info for 1 Sem. final
| Question | Answer |
|---|---|
| science | an organized way of gathering and analyzing evidence about the natural world |
| homeostasis | process of maintaining stable internal environment |
| field study | a comparison study, controls may be impossible |
| bioassay | using a living organism to see how it responds to various concentrations of a toxin |
| species | organisms that can reproduce in nature and have fertile offspring |
| population | the number of organisms of a certain species, in a certain place at a certain time |
| invasive species | an exotic species, one that did not evolve in a certain area, will often out compete native species for resources |
| succession | the slow change of one community with another Ex. a meadow becomes a forest |
| niche | the role of an organism in the community where it lives. "no 2 organisms can occupy the same niche" |
| buffer | a solution that resists a change in pH even when acids or bases are added to the solution |
| organic compound | contains carbon, carbohydrates, proteins, lipids, nucleic acids |
| enzyme | special proteins that catalyze biological reactions |
| pH | the concentration of hydrogen ions in a solution |
| catalyst | a substance that can speed up the rate of a reaction (not necessarily biological) |
| organelle | small structure in a cell that performs a specific function for the cell |
| hypothesis | a suspected answer to a question |
| theory | well tested explanation that unifies a broad range of observations and hypothesis; allows scientists to make accurate predictions about new situations |
| carbohydrates | -made by photosynthesis -used for energy -makes up cell walls |
| lipids | -oils, fats -don't dissolve in water -used for long term energy storage -make up cell membranes |
| proteins | -made up of 20 different amino acids -make up structure of tissues -protein channels through cell membrane |
| photosynthesis | light energy is changed to chemical energy carbon + water (add light energy)= glucose + oxygen dioxide |
| chemosynthesis; bacteria | make chemical energy out of inorganic molecules (like sulfur, hydrogen sulfide) No light needed! |
| observation | information gathered by using one's senses |
| inference | using background knowledge of a situation, making a logical interpretation of what did happen or what my happen |
| passive transport | -no energy needed -molecules move from area of high concentration to area of low concentration -diffusion, osmoses |
| active transport | -energy is used -molecules moved again concentrated gradient -endocytosis, exocytosis, phagocytosis |
| autotroph | plant can make its own food through photosynthesis -has chlorophyll -start of food chain -a producer |
| heterotroph | an animal, bacteria, fungi -must consume food, can't make it themselves |
| limiting factor | something that keeps a population from continuing to rise; (lack of food, water, cover, disease, fire, floods |
| carrying capacity | the number of organisms that the area has the resources to support |
| mutualism (relationships) | both organisms benefit from the relationship |
| commensalism (relationships) | one organism helped, other not harmed |
| parasitism (relationships) | one organism helped, other is harmed |
| innate behavior | response to stimuli that occurs at birth |
| learned behavior | response to stimuli gained through experiences |
| Why is water essential to life? | excellent solvent in which to dissolve substances needed in cells. It can make hydrogen bonds. It is neutral in charge; 10+ = 10- cohesion; similar molecules stick to one another (surface tension) adhesion; water sticks to surfaces, H20 moves up plant |
| What are the the parts of the cell theory? | -all living things are made of cells -cells are the unit of structure and function -cells come from pre-existing cells (they reproduce) |
Created by:
gcowing
Popular Biology sets