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REVIEW FOR EXAM #1 SPEERS BIOLOGY 1610 SLCC QUESTIONS AND ANSWERS
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REVIEW FOR EXAM #1 SPEERS BIOLOGY 1610 SLCC QUESTIONS AND ANSWERS
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REVIEW FOR EXAM #1 SPEERSBIOLOGY 1610 SLCC QUESTIONS AND
ANSWERS
Emergent properties - Answer-results from the arrangement and interaction of parts
within a system
Reductionism - Answer-Complex systems are reduced to simpler components
Evolution- two precepts - Answer-Descent with modification (gradual change)
Prokaryotic vs. Eukaryotic - Answer-Prokaryotic- simple cells with no nucleus
Eukaryotic- complex cells with nucleus and much bigger
The 3 biological domains - Answer-Bacteria, Archaea, Eukarya
The 4 groups of eukaryotes - Answer-animals, plants, fungi, protist
Darwin- what is it and what is it NOT - Answer-Natural selection- it is NOT survival of
the fittest
Deduction vs. Induction - Answer-deduction: general to specific
induction- specific to general
Scientific Method - Answer-A series of steps to plan and carry out investigations
Hypothesis vs. Theory - Answer-Hypothesis- a testable observation
Theory- supported by a large body of evidence
What is true about a good hypothesis? - Answer-It must be testable
What does falsifiable mean? - Answer-Can be ruled out by data
4 main elements of life - Answer-carbon, hydrogen, oxygen, nitrogen
Trace elements - Answer-an element indispensable for life but required in extremely
minute amounts.
Elements & Isotopes - Answer-Elements- any substance that cannot be broken down to
any other substance by chemical reactions
Isotopes- Different forms of the same element. Different number of neutrons.
Atoms - Answer-Smallest unit of matter
, Where is a proton located and what is the electrical charge? - Answer-Proton is located
in nucleus of an atom and is a single positive electrical charge
Where is the neutron located and what is the electrical charge? - Answer-Neutron is
found in the nucleus of an atom and has a neutral charge
Where is the electron located and what is the electrical charge? - Answer-Electrons
revolve around the nucleus and is negatively charged
Which particle defines or distinguished different elements? - Answer-Protons
What does the atomic number represent? - Answer-The number of protons in an atom
What does the mass number represent? - Answer-Total number of protons and
neutrons in an atom
What can we estimate using the mass number? - Answer-Estimate the atomic mass in
daltons (approx. 4)
What is Dalton? - Answer-Unit of measurement
Which particle distinguished different isotopes of the same element? What is true about
isotopes of the same element? - Answer-Neutrons and the number of neutrons
Which particle determines the chemical behavior of an atom? - Answer-Electrons
reactants and products - Answer-substances that exist before a reaction; substances
that exist after the reaction
potential energy vs. kinetic energy - Answer-potential: stored energy Kinetic: energy of
motion
Valence - Answer-unpaired electrons in its outermost shell
octet rule - Answer-atoms react by gaining or losing electrons or share electrons to have
8 electrons in their outer electron shell
duet rule - Answer-hydrogen forms stable molecules when it shares two electrons
Why are noble gases unreactive? - Answer-They have a full outer shell
covalent bond - Answer-A chemical bond formed when two atoms share electrons
ionic bond - Answer-A chemical bond resulting from the attraction between oppositely
charged ions
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