Chapter 1

Which of the following lists the steps of the process of science in correct order?

All scientific investigations start with observations. Though the scientific method is often presented in linear steps, the actual process of science is more flexible to allow for the necessary actions to best test a hypothesis.

Which of the following features would be useful in identifying pseudoscience?

Belief A belief is not testable and therefore not a feature of the scientific process.

Each spring, high school students, college interns, and retirees count and weigh tiny glass eels in streams that feed into the Hudson River. They report their observations to the New York State Department of Environmental Conservation Hudson River Estuary Program and the National Estuarine Research Reserve System, who depend on volunteers to help build a database of information about glass eels. The observations that these volunteers make would best be described as __________.

Observational studies Observational studies involve the analysis of observations with the goal of uncovering patterns or correlations.

A___________ is a group in which a known response is expected.

Positive Control

In a ___________experiment, the researchers--but not the participants--know who receives the treatment and who does not, to eliminate subjective bias.

Single-Blind

You see a display for a new diet pill in a grocery store. The display includes a stack of color-printed handouts claiming the average user of the product loses five pounds per week while taking the product. Which of the following would indicate that the handout is not a reliable source?

The intent of the handout is to convince the consumer to buy the diet pills. Methods of persuasion present bias that would make the source unreliable.

By definition, a theory ________________.

is supported by a large body of evidence Theories are comprehensive explanations that encompass explanations of many observations.

scientific method order

observation, question, hypothesis, prediction, experiment

Biology

the study of living things

Not Property Of All Living Things

1. Requires another individual to reproduce 2.Composed of many cells 3. Eats other organisms to gain energy 4. Individuals evolve over time

Property Of All Living Things

1.Complex,but well-ordered, structure 2. Takes in,converts, and expels energy 3. Reproduces its own kind 4. Responds to the environment 5. Populations evolve over time

Can you sequence the following levels of biological organization from smallest to largest?

1.Molecule 2.Cell 3.Tissue 4.Organ 5.Organism 6.Population 7.Community 8.Ecosystem 9. Biosphere

A__________ is a group in which no response is expected.

Negative Control

A __________establishes a base line for an experiment.

Control Group

The type of test that changes only one variable at a time in order to isolate the results is known as a ________ experiment.

Controlled

The __________ variable is the factor a scientist observes to see the effect of the change made.

Dependent

In a __________experiment, neither the participants nor the researchers know who receives the treatment and who does not.

Double-Blind

The one variable that is manipulated by a scientist as a potential cause in an experiment is the_________ variable.

Independent