The process by which scientists carefully examine the work of other scientists to look for possible flaws in their experimental design or their interpretation of results
What is "peer review?"
100
The process by which an existing community is replaced by another community
What is "ecological succession"
100
A think threadlike structure that contains genetic information in the form of DNA
What is "chromosome"
100
The normal differences found among offspring
What is "genetic variation"
100
The process that transforms developing cells into specialized cells with different structures and functions
What is "differentiation"
200
The part of an experiment that is measured to test the hypothesis
What is "dependent variable"
200
The largest population of any single species that an area can support
What is "carrying capacity"
200
The section of a DNA molecule that contains a sugar, a phosphate, and a base
What is "subunit"
200
An explanation, supported by many observations and/or experiments, that can be used to accurately explain related occurrences
What is "theory"
200
The addition of mixing genetic material from a sperm and egg which results in a unique combination of genes
What is "recombination"
300
A representation used to explain or demonstrate a process of structure; also used to predict what might occur in a new situation
What is a "model"
300
The specific role played by an organism or a population of organisms in the ecosystem
What is "ecological niche"
300
The ability of an organism to maintain a stable internal environment even when the external environment changes
What is "homeostasis"
300
The potential for a species to increase its numbers beyond the area's carrying capacity
What is "overproduction"
300
A group of organisms that share certain characteristics and can mate with one another, producing fertile offspring
What is "species"
400
A basic knowledge of the natural world combined with an understanding of the diverse ways that scientists gain knowledge
What is "scientific literacy"
400
The living parts of the environment
What is "biotic"
400
A molecule found on the outer surfaces of cells that the immune system recognizes as either part of the body of an outside invader
What is "antigen"
400
The process by which the organisms that are best adapted to a specific environment survive and produce more offspring than organisms that are not as well adapted
What is "natural selection"
400
The process that divides the cell's nucleus into two, each with a complete set of genetic material from the parent cell
What is "mitosis"
500
The results of specific trials or tests completed during experiments
What is "data"
500
The struggle between organisms for the same limited resources in a particular area
What is "competition"
500
Certain protein molecules in the cell membrane that can receive chemical messages from other cells
What is "receptor molecules"
500
Any trait that helps an organism survive and reproduce under a given set of environmental conditions
What is "adaptive value"
500
A method of reproduction that involves two parents producing offspring that are genetically different from either parent