point of view that is personal rather than scientific
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. 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 peerreviewed 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
What are four scientific attitudes that help scientists generate new ideas?
curiosity, skepticism, openmindedness, 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.
