point of view that is personal rather than scientific bias

living things maintaining a relatively stable internal environment homeostasis

in an experiment, the variable that is manipulated independent variable

the combination of chemical reactions through which an organism builds up or breaks down materials metabolism

a molecule containing the universal genetic code DNA

the study of life biology

in an experiment, the responding variable dependent variable

in an experiment, the group exposed to the same conditions as the experimental group except for one independent variable control group

a living planet biosphere

A scientist working in the early 1900s came up with a hypothesis A scientist working in the early 1900s came up with a hypothesis. Over the next 100 years, other scientists tested the hypothesis and found that it could make predictions about numerous new situations time and time again. This hypothesis can now rightfully be considered a ________________________ theory

An article that is undergoing ____________________ is read carefully and checked by other scientists. Peer review

After a scientist publishes a paper, someone else finds evidence that the paper’s hypothesis may not be correct. The scientist is unhappy, but studies the new evidence anyway. The scientist is showing which scientific attitude? open-mindedness

A personal preference or point of view is a bias

The smallest units in living things that are considered to be alive are cells

The process by which organisms keep everything inside their bodies within certain limits is called homeostasis.

How does sharing ideas through peer-reviewed articles help advance science? Scientists reading the articles may come up with new questions to study.

Who reviews articles for peer-reviewed journals? anonymous and independent experts

Using a universal system of measurement is MOST important during which part of scientific methodology? a. asking questions b. forming a hypothesis c. collecting data d. drawing conclusions collecting data

A well-tested explanation that explains a lot of observations is a theory.

During a controlled experiment, a scientist isolates and tests a single variable

The work of scientists usually begins with careful observations

The basic unit of length in the metric system is the meter

curiosity, skepticism, open-mindedness, and creativity What are four scientific attitudes that help scientists generate new ideas? curiosity, skepticism, open-mindedness, and creativity

What is a bias? A bias is a particular preference or point of view that is personal rather than scientific.

Can a theory change over time? Explain your answer. A theory can change over time. No theory is considered absolute truth. As new evidence is uncovered, a theory may be revised or replaced by a more useful explanation.

How does peer review improve the overall quality of a scientist’s work? When scientists have articles peer-reviewed, they will find out if there are any mistakes or oversights in their work. They can then fix these mistakes. Peer review also keeps scientists honest. Scientists cannot pass off false data or make inaccurate conclusions because they know their work will be reviewed by experts.