BIO 1050 EXAM 1 ECU-BUNNELL | LATEST STUDY |
QUESTIONS AND ANSWERS | 2026 UPDATES
What is Science? - ANSWER- -a way of knowing.
-limited to observations and measurements (empirical)
-Natural not Supernatural
-Influences society (+,-)
-an approach to answer questions
-new facts take prescedence
Scientific method - ANSWER- 1) Make observations
2) Form hypothesis
3) Devise a testable prediction
4) Conduct a critical experiment
5) Draw conclusions and make revisions
the null hypothesis - ANSWER- a negative statement that proposes there is no
relationship between two factors
The placebo effect - ANSWER- the phenomenon in which people respond favorable to any
treatment
-highlights the need for comparison of treatment effects with the appropriate control group
pseudoscience - ANSWER- making scientific-sounding claims that are not supported from
trustworthy scientific studies
anecdotal observations - ANSWER- based only on a few observations, people conclude
that there is no link between the two things.
theory - ANSWER- hypothesis for natural phenomena that is exceptionally well-supported
by the data
-a hypothesis that has withstood the test of time and is unlikely to be altered by any new
evidence
, All living things are made of (The Big 4) - ANSWER- -Nitrogen
-Oxygen
-Hydrogen
-Carbon
Definition of Life - ANSWER- -all living organisms contain a common set of biological
molecules
-can maintain homeostasis (a roughly constant env)
isotopes - ANSWER- atoms with the same atomic number (protons) but different atomic
mass
ex: carbon 12, carbon 13, and carbon 14
mass number/atomic mass - ANSWER- the sum of the number of the molecules protons
and neutrons
electron shells - ANSWER- an atom can have as many as 7 electron shells in total
atom stability - ANSWER- when atoms outermost shells are filled to capacity. stable atoms
tend to not react or combine with other atoms
*only when atoms have an electron vacancy in the outermost shell are they likely to interact
with other atoms
covalent bond - ANSWER- atoms with 4 or 5 electrons in their valence shells tend to share
electrons to complete their valence shells
ex: H20, 02, C02, H2
Bond strength: STRONG
organic chemistry - ANSWER- all life on Earth is based on chemistry of the element
carbon.
double bond (organic chemistry) - ANSWER- an element enters into a bond involving two
parts of shared electrons
ions - ANSWER- charged atoms
an atom that loses one or more electrons becomes ________ charged - ANSWER-
positively
QUESTIONS AND ANSWERS | 2026 UPDATES
What is Science? - ANSWER- -a way of knowing.
-limited to observations and measurements (empirical)
-Natural not Supernatural
-Influences society (+,-)
-an approach to answer questions
-new facts take prescedence
Scientific method - ANSWER- 1) Make observations
2) Form hypothesis
3) Devise a testable prediction
4) Conduct a critical experiment
5) Draw conclusions and make revisions
the null hypothesis - ANSWER- a negative statement that proposes there is no
relationship between two factors
The placebo effect - ANSWER- the phenomenon in which people respond favorable to any
treatment
-highlights the need for comparison of treatment effects with the appropriate control group
pseudoscience - ANSWER- making scientific-sounding claims that are not supported from
trustworthy scientific studies
anecdotal observations - ANSWER- based only on a few observations, people conclude
that there is no link between the two things.
theory - ANSWER- hypothesis for natural phenomena that is exceptionally well-supported
by the data
-a hypothesis that has withstood the test of time and is unlikely to be altered by any new
evidence
, All living things are made of (The Big 4) - ANSWER- -Nitrogen
-Oxygen
-Hydrogen
-Carbon
Definition of Life - ANSWER- -all living organisms contain a common set of biological
molecules
-can maintain homeostasis (a roughly constant env)
isotopes - ANSWER- atoms with the same atomic number (protons) but different atomic
mass
ex: carbon 12, carbon 13, and carbon 14
mass number/atomic mass - ANSWER- the sum of the number of the molecules protons
and neutrons
electron shells - ANSWER- an atom can have as many as 7 electron shells in total
atom stability - ANSWER- when atoms outermost shells are filled to capacity. stable atoms
tend to not react or combine with other atoms
*only when atoms have an electron vacancy in the outermost shell are they likely to interact
with other atoms
covalent bond - ANSWER- atoms with 4 or 5 electrons in their valence shells tend to share
electrons to complete their valence shells
ex: H20, 02, C02, H2
Bond strength: STRONG
organic chemistry - ANSWER- all life on Earth is based on chemistry of the element
carbon.
double bond (organic chemistry) - ANSWER- an element enters into a bond involving two
parts of shared electrons
ions - ANSWER- charged atoms
an atom that loses one or more electrons becomes ________ charged - ANSWER-
positively
