SCIENCE IN ACTION
Science differs from subjects such as history and art because science relies on doing this to explanations.
Testing explanations
A testable explanation for an observation is called what?
A hypothesis
Coming up with different ways to test a question demonstrates what scientific attitude?
Creativity
The process in which other scientists evaluate a scientific article before publication is called what?
Peer Review
Every living thing is made of structures that perform specific what?
Functions
What is the basic metric unit of length?
Meter
A plant grows 3 cm in two weeks. The measurement of 3 cm is an example of what?
Data
A broad explanation supported by a large amount of evidence is called what?
A scientific theory
A personal preference or point of view that may influence someone's interpretation is called what?
Bias
Peer-reviewed articles can lead scientists to develop what?
New questions or new research
Cell specialization allows different cells in a multicellular organism to do what?
Perform different functions
What prefix means 1,000?
Kilo
A scientist suggests that water causes bread mold to grow faster. What has the scientist created?
A Hypothesis
True or False: A scientific theory is basically an educated guess.
False
A scientist reads results that disagree with her own work but still considers the evidence. What attitude is she demonstrating?
Open Mindedness
True or False: Once an experiment appears in a peer-reviewed journal, it never needs to be repeated.
False
Which big idea of biology deals most directly with DNA?
Information and heredity
Convert 3,000 grams to kilograms.
3 kg
If another scientist proposes a hypothesis about a new virus, what should other researchers do next?
a hypothesis about a new virus, what should other researchers do next?Design experiments to test the hypothesis
A scientific theory works in many situations but fails to explain one new observation. What should scientists do?
Revise or further test the theory
Who usually evaluates articles submitted to peer-reviewed scientific journals?
Anonymous, independent experts
Why is repeating experiments important in science?
It helps determine whether the results are reliable and reproducible.
What are the smallest objects commonly studied by biologists according to this chapter?
Molecules
Convert 2.4 kilometers to meters.
2,400 meters
What is one major goal of science?
To investigate and understand the natural world, explain events, and use explanations to make predictions
Explain the major difference between a hypothesis and a theory.
A hypothesis is a specific testable explanation; a theory is a broad, well-tested explanation that unifies many observations and hypotheses.
Why should peer reviewers be anonymous and independent?
So personal relationships or conflicts of interest are less likely to influence their evaluation of the research.
Explain how peer review helps science advance rather than simply deciding whether a scientist is “right.”
Other scientists evaluate the work, identify possible problems, and use the findings to develop new questions and investigations.
Which characteristic of life is important for the survival of a species or population rather than the survival of one individual organism? Explain.
Reproduction, because an individual can survive without reproducing, but the population/species cannot continue without reproduction.
A student records a length of 0.75 km. How many meters is that?
750 Meters