Biology 140 Exam I Final Review

Experiments are carried out to test the hypothesis by changing one variable at a time and including a ______ conditioin in which the variable is unaltered.

Biological order has _____ organization, from the level of highly structured organic molecules in the cells to the highest level of populations and communities in biomes and biosphere.

The method of reasoning that constructs general principles by careful examination of many specific cases is called:

A hypothesis can be tested with:

After making careful observations, scientists construst a _____.

Hypotheses:

Darwin descreibed __________ _________ as "those individuals that possess superior physical, behavioral, or other attributes are more likely to survive than those that are not so well endowed," and thus more likely to pass their traits to the next generation.

Modern pieces of evidence that corroborate Darwin's theory of evolution include:

A critical requirement of Darwin's theory is:

THe same basic array of bones is modified to give rise to the wing of a bat and the fin of a porpoise. Such anatomical structures are called

A medical scientist is designing an experiment to test the results of a new drug that she hypothesizes will greatly reduce and possibly eliminate the side effects of a new cancer treatment. If this experiment is to be set up correctly, she must:

Hierarchicial organization in living organisms:

The cell theory DOES include:

All of the substances of the universe that have mass and occupy space are defined as

The number of protons in a given atom is equal to its ______ number.