BIO 156 COMPREHENSIVE QUESTIONS AND
ANSWERS SET A+
✔✔What exactly is a hypothesis?
Describe 2 properties of a GOOD/USEFUL hypothesis. - ✔✔-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 - ✔✔-
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? - ✔✔-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? - ✔✔-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) - ✔✔-the variable that is deliberately created/"set
up" by the researcher
✔✔Define Dependent variable (DV) - ✔✔-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? - ✔✔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) - ✔✔__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?" - ✔✔-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? -
✔✔-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: -
✔✔-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. - ✔✔Provides a time-tested SYSTEMATIC METHOD to follow
✔✔Giga - ✔✔x 1,000,000,000
✔✔nano - ✔✔x 0.000000001(one-billionth)
, ✔✔milli - ✔✔x 0.001(one-thousandth)
✔✔deka - ✔✔x 10
✔✔centi - ✔✔x 0.01 (0ne-hundredth)
✔✔Why is the metric system so much better than the English (Imperial) measuring
system? - ✔✔-Based on powers of 10
-Completed in 1790
✔✔What does my 10 kg cat "Mouser" weigh in ENGLISH POUNDS? - ✔✔10 kg X 2.2
pounds/kg = 22 lbs
✔✔How is the weight/mass of one GRAM defined in the METRIC system? - ✔✔The
CENTRAL UNIT "GRAM" is defined as the weight/mass of 1ml of liquid water.
✔✔What is the APPROXIMATE weight of a 2- liter bottle of DIET coke? - ✔✔2
kilograms
✔✔In the Centigrade temperature scale, what is the BOILING POINT of water? - ✔✔-
100 ^o Celsius
✔✔What is human body temperature in centigrade degrees? - ✔✔-37 ^o Celsius
✔✔What is human body temperature in F? - ✔✔98.6 F
✔✔How are the metric units for LENGTH and VOLUME related? - ✔✔1 cubic
centimeter [cc, cm3] = 1 ml
1 cubic decimeter (1dm3) = 1 L
✔✔What is a micrometer? - ✔✔A micrometer is a unit of LENGTH measurement in the
metric system
equal to 1,000,000th of a meter. (one-millionth, 0.000001, 10-6)
✔✔What is a MENISCUS and what is the "MENISCUS RULE"? - ✔✔The MENISCUS is
the CONCAVE surface depression in the
surface of water in a GRADUATED CYLINDER or PIPETTE.
The MENISCUS RULE states that you should read the volume
at the BOTTOM of the meniscus.
✔✔Why would you push the TARE button on the digital balance?
ANSWERS SET A+
✔✔What exactly is a hypothesis?
Describe 2 properties of a GOOD/USEFUL hypothesis. - ✔✔-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 - ✔✔-
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? - ✔✔-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? - ✔✔-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) - ✔✔-the variable that is deliberately created/"set
up" by the researcher
✔✔Define Dependent variable (DV) - ✔✔-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? - ✔✔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) - ✔✔__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?" - ✔✔-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? -
✔✔-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: -
✔✔-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. - ✔✔Provides a time-tested SYSTEMATIC METHOD to follow
✔✔Giga - ✔✔x 1,000,000,000
✔✔nano - ✔✔x 0.000000001(one-billionth)
, ✔✔milli - ✔✔x 0.001(one-thousandth)
✔✔deka - ✔✔x 10
✔✔centi - ✔✔x 0.01 (0ne-hundredth)
✔✔Why is the metric system so much better than the English (Imperial) measuring
system? - ✔✔-Based on powers of 10
-Completed in 1790
✔✔What does my 10 kg cat "Mouser" weigh in ENGLISH POUNDS? - ✔✔10 kg X 2.2
pounds/kg = 22 lbs
✔✔How is the weight/mass of one GRAM defined in the METRIC system? - ✔✔The
CENTRAL UNIT "GRAM" is defined as the weight/mass of 1ml of liquid water.
✔✔What is the APPROXIMATE weight of a 2- liter bottle of DIET coke? - ✔✔2
kilograms
✔✔In the Centigrade temperature scale, what is the BOILING POINT of water? - ✔✔-
100 ^o Celsius
✔✔What is human body temperature in centigrade degrees? - ✔✔-37 ^o Celsius
✔✔What is human body temperature in F? - ✔✔98.6 F
✔✔How are the metric units for LENGTH and VOLUME related? - ✔✔1 cubic
centimeter [cc, cm3] = 1 ml
1 cubic decimeter (1dm3) = 1 L
✔✔What is a micrometer? - ✔✔A micrometer is a unit of LENGTH measurement in the
metric system
equal to 1,000,000th of a meter. (one-millionth, 0.000001, 10-6)
✔✔What is a MENISCUS and what is the "MENISCUS RULE"? - ✔✔The MENISCUS is
the CONCAVE surface depression in the
surface of water in a GRADUATED CYLINDER or PIPETTE.
The MENISCUS RULE states that you should read the volume
at the BOTTOM of the meniscus.
✔✔Why would you push the TARE button on the digital balance?
