Proposed scientific explanation for set of observatives.
Information describing color, shape, or some other physical characteristic.
The experimental factor that is manipulated; the variable whose effect is being studied.
The variable that is measured in an experiment.
A variable that is not changed.
Characteristics of Living Things
1. Made up of cells.
3. Based on universal genetic code.
4. Grow and develop.
5. Obtain and use materials and energy.
6. Respond to enviroment.
7. Maintain a stable enviroment.
Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes.
Process by which organisms maintain a stable internal environment.
3 Subatomic particles of an atom
Protons (+), Nuetrons (no charge), Electrons (-).
Number of protons in an atom.
Formed when one or more electrons are transferred from one atom to another.
Bond formed by the sharing of electrons between atoms.
Properties of water
Cohesion, adhesion, polarity, used in mixtures and/or solutions, can be a solvent, and a pH of 7.
Compound that forms hydrogen ions (H+) in solution.
A compound that produces hydroxide ions in a solution.
Compound made up of carbon, hydrogen, and oxygen atoms; major source of energy for the human body.
Made mostly from carbon and hydrogen atoms; used to store energy.
Macromolecules that contain nitrogen as well as carbon, hydrogen, and oxygen; polymers made of amino acids.
Macromolecules containing hydrogen, oxygen, nitrogen, carbon, and phosphorus; stores and transmits hereditary information.
Elements or compounds that enter into a chemical reaction.
Elements or compunds produced by a chemical reation.
Speed up chemical reactions that take place in cells.
Scientific study of interactions among organisms and between organisms and their environment.
Organisms that cannot make their own food and must feed on other organisms for energy and nutrients.
Organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds.
Organisms that produce their own food.
Organisms that eat living producers and/or other consumers for food.
Organisms that break down the dead remains of other organisms.
Evaporation/Transpiration, Condensation, Precipitation, Runoff, Seepage, Root Uptake.
Nitrogen fixation- Converting nitrogen gas into ammonia.
Denitrification- Converting nitrates into nitrogen gas.
When an ecosystem is limited by a single nutrient that is scarce or cycles very slowly.
Average, year-after-year conditions of temperature and precipitation in a particular region.
Day-to-day conditions of the atmoshphere at a particular time and place.
3 climate zones
The nonliving parts of an ecosystem.
The living parts of an ecosystem.
Organism's role, or job, in its habitat.
Place where an Organism lives.
Competitive Exclusion Principle
Ecological rule that states that no two species can occupy the same exact niche in the same habitat at the same tim.
3 Characteristics of Population
Geographic distribution, population density, growth rate.
Interaction in which one organism captures and feeds on another organism.
Relationship in which two species live closely together.
Relationship between two species in which both species benefit.
Relationship in which one member of the association benefits and the other is neither helped nor harmed.
One organism lives on or in another and harms it.
Largest number of individuals of a population that a environment can support.
Idea that all living things are composed of cells, cells are the basic units of structure and function in living things, and new cells are produced from existing cells.
Cells that do not contain nuclei.
Cells that contain nuclei.
Part of the cell containing DNA and RNA and responsible for growth and reproduction.
Where proteins are made.
Internal transport system of the cell, modifies proteins, and synthesizes lipids.
Stack of membranes in the cell that modifies, sorts, and packages proteins from the endoplasmic reticulum.
Cell organelle filled with enzymes needed to break down certain materials in the cell
Saclike structures that store materials such as water, salts, proteins, and carbohydrates.
Organelles that convert the chemical energy stored in food into compounds that are more convenient for the cell to use.
Organelles that capture the energy from sunlight and convert it into chemical energy in a process called photosynthesis.
The movement of substances across a cell membrane without the use of energy by the cell.
The movement of materials through a cell membrane using energy.
Process by which molecules tend to move from an area where they are more concentrated to an area where they are less concentrated.
Diffusion of water through a selectively permeable membrane.
Movement of specific molecules across cell membranes through protein channels
Process by which a cell takes material into the cell by infolding of the cell membrane.
Process by which a cell releases large amounts of material.
Having a lower concentration of solute than another solution.
When comparing two solutions, the solution with the greater concentration of solutes.
When the concentration of two solutions is the same
When a cell is in a hypertonic environment, the cell will lose water to its surroundings, shrink, and its plasma membrane will pull away from the wall.
Levels of Organization
3. Organ Systems