Bio 1201 Exam 1 QUESTIONS &
ANSWERS 100% CORRECT!!
Science is a ______ process. - ANSWERCircular
What do scientists do? - ANSWERMake observations, attempt to discern patterns,
and assume that the future is like the past.
Scientific Method - ANSWERObservation-->Generalization or Model-->Predictions or
hypothesis-->Test-->
Hypothesis - ANSWERExplanation or prediction that has not been tested.
Theory - ANSWERHypothesis that is tested many times and is always supported.
Law - ANSWERTheory that continues to be tested and gain support.
What scales are biologists interested in? (Scale of Nature) - ANSWERAtomic 10^-8
meters
Community/Ecosystem 10^6 meters
Approaches to Biology - ANSWERReductionist approach
Wholist approach
Reductionist Approach - ANSWERTake concept apart and study the parts
individually
Wholist approach - ANSWERstudy the entire structure/organism
Why is atomic structure biologically important? - ANSWEROrganisms are composed
largely of 11 basic elements.
Atom - ANSWERSmallest unit of matter separable by normal chemical means.
The smallest unit of matter that retains all of the properties of that element.
Subatomic Particles - ANSWERProton
Neutron
Electron
Proton - ANSWERMass: 1 dalton
Charge: +1
Neutron - ANSWERMass: 1 dalton
Charge: 0
Electron - ANSWERMass: ~0 daltons
Charge: -1
, Atomic Number - ANSWERthe number of protons in an atom
Atomic Mass - ANSWERthe number of protons and neutrons in an atom (approx.)
Isotopes - ANSWERvariants of an atom, having a different atomic mass (neutrons).
Where are the subatomic particles located? - ANSWERProtons=nucleus
Neutrons=nucleus
Electrons=shells surrounding nucleus/electron cloud
Shells - ANSWERK,L,M inner-->outer
Valence - ANSWERThe number of electrons that must be gained or lost to fill the
outer shell of electrons.
Also predicts the number of bonds that an atom will form.
Valence electrons - ANSWERthe electrons in the outermost shell
What is biology? - ANSWERThe study of life
Characteristics of Living - ANSWEROrganization (different levels of cells and organic
matter)
Energy Use* (gas exchange)
Development (growth, change during lifetime)
Reproduction*
Evolve (populations evolve, not individuals)
Respond to the environment*
What determines solubility? - ANSWERLike dissolves like....similar properties.
Like in terms of polarity...polar solutes dissolve in polar solvents and non polar
solutes dissolve in non polar solvents.
What determines the polarity of a molecule? - ANSWERThe type of bond/s within a
molecule
Chemical Bonds - ANSWERForm when atoms gain, lose, or share electrons.
They are the result of electrical charges.
Ionic Bonds - ANSWERForm when atoms completely gain or lose electrons.
Strongest bond when dry.
Covalent Bonds - ANSWERFrom when atoms share electrons.
Shared equally=covalent
Shared unequally=polar covalent
Strongest bond in water.
Are covalent, polar covalent and ionic bonds really different bonds? -
ANSWERSame force holding them together, just different levels of sharing.
ANSWERS 100% CORRECT!!
Science is a ______ process. - ANSWERCircular
What do scientists do? - ANSWERMake observations, attempt to discern patterns,
and assume that the future is like the past.
Scientific Method - ANSWERObservation-->Generalization or Model-->Predictions or
hypothesis-->Test-->
Hypothesis - ANSWERExplanation or prediction that has not been tested.
Theory - ANSWERHypothesis that is tested many times and is always supported.
Law - ANSWERTheory that continues to be tested and gain support.
What scales are biologists interested in? (Scale of Nature) - ANSWERAtomic 10^-8
meters
Community/Ecosystem 10^6 meters
Approaches to Biology - ANSWERReductionist approach
Wholist approach
Reductionist Approach - ANSWERTake concept apart and study the parts
individually
Wholist approach - ANSWERstudy the entire structure/organism
Why is atomic structure biologically important? - ANSWEROrganisms are composed
largely of 11 basic elements.
Atom - ANSWERSmallest unit of matter separable by normal chemical means.
The smallest unit of matter that retains all of the properties of that element.
Subatomic Particles - ANSWERProton
Neutron
Electron
Proton - ANSWERMass: 1 dalton
Charge: +1
Neutron - ANSWERMass: 1 dalton
Charge: 0
Electron - ANSWERMass: ~0 daltons
Charge: -1
, Atomic Number - ANSWERthe number of protons in an atom
Atomic Mass - ANSWERthe number of protons and neutrons in an atom (approx.)
Isotopes - ANSWERvariants of an atom, having a different atomic mass (neutrons).
Where are the subatomic particles located? - ANSWERProtons=nucleus
Neutrons=nucleus
Electrons=shells surrounding nucleus/electron cloud
Shells - ANSWERK,L,M inner-->outer
Valence - ANSWERThe number of electrons that must be gained or lost to fill the
outer shell of electrons.
Also predicts the number of bonds that an atom will form.
Valence electrons - ANSWERthe electrons in the outermost shell
What is biology? - ANSWERThe study of life
Characteristics of Living - ANSWEROrganization (different levels of cells and organic
matter)
Energy Use* (gas exchange)
Development (growth, change during lifetime)
Reproduction*
Evolve (populations evolve, not individuals)
Respond to the environment*
What determines solubility? - ANSWERLike dissolves like....similar properties.
Like in terms of polarity...polar solutes dissolve in polar solvents and non polar
solutes dissolve in non polar solvents.
What determines the polarity of a molecule? - ANSWERThe type of bond/s within a
molecule
Chemical Bonds - ANSWERForm when atoms gain, lose, or share electrons.
They are the result of electrical charges.
Ionic Bonds - ANSWERForm when atoms completely gain or lose electrons.
Strongest bond when dry.
Covalent Bonds - ANSWERFrom when atoms share electrons.
Shared equally=covalent
Shared unequally=polar covalent
Strongest bond in water.
Are covalent, polar covalent and ionic bonds really different bonds? -
ANSWERSame force holding them together, just different levels of sharing.
