Chapter 1 Crossword

_______ is the study of life
Highly organized tiny structures with thin membranes.
what is the process in which organisms make more of their own from generation to generation?
__________ is the sum of all of the chemical reactions in an organism
the maintenance of stable internal conditions in spite of changes in the external environment
what is the basic unit of heredity?
the passing of traits from parents to their children
_______ is a change in the DNA of a gene
change in the inherited characteristics of species over generations is called _____
a group of genetically similar organisms that can reproduce
the process in which organisms with favorable traits are most likely to survive and reproduce
he branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
_________ is the act of noting or perceiving objects or events using the senses
an explanation that can be true/false
the expected outcome of the test
a relative measure of the hydrogen ion concentration with a solution
a planned procedure to test a hypothesis
a group in a an experiment that receives no experimental treatment is called _____
the factor that is changed in an experiment
the variable that is measured in an experiment
a ______ is a set of related hypotheses that have been tested and confirmed many times by scientist