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Bio 156 EXAM -1 QUESTIONS WITH CORRECT ANSWERS
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Bio 156 EXAM -1 QUESTIONS WITH CORRECT ANSWERS
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Bio 156 EXAM #1 QUESTIONS WITHCORRECT ANSWERS
What is the definition of "Biology"? - Answer -Biology is the scientific study of life and
organisms
ESSAY:
1. Create a carefully worded and precise RQ
-Define, describe, clarify (any unclear words/phrases)
-Ask other researchers
2. Review the "Literature"" to explore the RQ
-Primary literature: published reports of original scientific research, peer reviewed
journals
-Secondary literature: everything else
3. Create multiple HYPOTHESES and make list of POSSIBLE answers to RQ
-Hypothesis: one of many possible answers to the RQ
-Is it VALID: does it make sense
-Is it TESTABLE: can it be used to generate PREDICTIONS (deductions) about CMW
world
4. Generate PREDICTIONS from your hypothesis. Be SPECIFIC
-The deduction formula
-IF (my H is true), THEN what should I observe in the real world
5. Do EXPERIMENTS test your PREDICTIONS
-Establish clear & repeatable EXPERIMENTAL DESIGN
-consider RQ, hypothesis, the variables
-IV: deliberately change, "set up"
-DV: observe
-Controlled variable: all possible variables that mi - Answer -essay
What is Science? - Answer -Science is a tool used to answer certain questions about
the natural world
,When/Where does SCIENCE/SCIENTIFIC METHOD "work" best? - Answer -Works
best when...
We are asking questions and expecting answers in concrete material "CMW"
How can you make sure that your RESEARCH QUESTION is clear and precise? -
Answer --Define
-Describe
-Clarify any unclear words or phrases
-Ask other researchers
Why is PEER COMMUNICATION [step 7] mentioned in step 1 of the H-D Scientific
Method? - Answer --Peer communication should actually be in EVERY STEP
-Science is a social activity
What exactly is a hypothesis?
Describe 2 properties of a GOOD/USEFUL hypothesis. - Answer --A hypothesis is one
of many possible answers to the research question
-Valid: does it makes sense
-Testable: can be used to make predictions about the CMW
List two ways that a HYPOTHESIS and a PREDICTION are different - Answer --
HYPOTHESIS
-general
-sound like an answer to a question
-PREDICTIONS
-specific
-sound like a research question
What is the difference between a HYPOTHESIS and a THEORY? - Answer --Theory: a
well tested hypothesis that has never made a false prediction, (and has only made true
predictions)
-Hypothesis: only ONE possible answer
How do we decide if a HYPOTHESIS gets to "stay on the list of possible answers" or
gets thrown off the list? - Answer --IF a hypothesis is VALID and TESTABLE it is kept
on the list
-IF a hypothesis is making TRUE PREDICTIONS, THEN we keep it on the list of
possible answers to the RQ.
IF it makes a FALSE prediction, it gets thrown off the list.
, Define Independent variable (IV) - Answer --the variable that is deliberately created/"set
up" by the researcher
Define Dependent variable (DV) - Answer --the variable that is measured
-usually difficult to create it
-can only observe it
What very important MOLECULE is in the Centigrade/Celsius temperature scale
associated with? - Answer -H2O
MATCH the Metric Prefix with its corresponding value:
____Giga a. x 1,000
____centi b. x 1 billion
____micro c. x 10
____deka d x0.000001(one-millionth)
____kilo e x 0.01 (0ne-hundredth) - Answer -__b__Giga a. x 1,000
__e__centi b. x 1 billion
__d__micro c. x 10
__c__deka d. x 0.000001(one-millionth)
__a__kilo e x 0.01 (0ne-hundredth)
Why is it important to identify the controlled variables in your experiment? What is the
"Rule of Same?" - Answer --it's important to identify the controlled variables so they
don't affect your experiment
-don't allow them to be controlled variables and make them the same
-want to make sure they aren't variables
What is the RESEARCH QUESTION in the "ALKA SELTZER" lab experiment? -
Answer --Will Alka Seltzer dissolve more quickly in warm water than cold water?
LIST 2 variables that had to be controlled in your ALKA-SELTZER experiment: - Answer
--Type of Alka Seltzer
-Beaker size
-Amount of water
Explain 1 way that the scientific method helps you "avoid being misled" as you try to
answer questions. - Answer -Provides a time-tested SYSTEMATIC METHOD to follow
Giga - Answer -x 1,000,000,000
nano - Answer -x 0.000000001(one-billionth)
milli - Answer -x 0.001(one-thousandth)
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