BIOLOGY 305 UPDATED EXAM
QUESTIONS AND ANSWERS 2026
COMPLETE EXAM PREP WITH
VERIFIED SOLUTIONS
◉ Dependent Variable.
Answer: -what is being measured or observed during experiment; effect
◉ Control Variable.
Answer: -use as the comparison "group" in an experiment
◉ What makes an experiment reliable?.
Answer: -has been tested numerous times by more than one scientist
-it follows steps of scientific method
-no bias
-information came from third party
-study been retested
-results are published in scientific journal
◉ Theory.
Answer: -are subject to revision and modification over time
◉ Laws.
,Answer: -developed when observations around the world are tested and
retested until there is a consensus in a scientific community; not changed
over time
◉ Dissection Light Microscope.
Answer: -lowest magnification for microscopes
-views organs and tissues during dissection
-views 3D specimens
◉ Compound Light Microscope.
Answer: -40x to 400x
-views tissue samples, blood, microorganisms, and larger details of some
cells
-common classroom microscope
◉ Transmission Electron Microscope.
Answer: -passes a beam of electrons through a thin specimen
-mainly used to study internal structures of cells that cannot be viewed
under light microscopes
◉ Scanning Electron Microscope.
Answer: -electron beam passes over specimens surface that is coated
with thin layer of gold metal
-studies details of specimen's surface
, -3D and black&white
◉ Polar Molecules.
Answer: -have an end that is slightly positive and an end that is lightly
negative
-water
◉ Hydrogen Bonding.
Answer: -attraction between the slightly positive hydrogen of one
molecule and the slightly negative oxygen of another water molecule
◉ Surface tension.
Answer: elastic-like forces existing on the surface of a liquid caused by
asymmetry in the attractive forces between the liquid molecules
◉ Cohesion.
Answer: when two like substances attract to one another
◉ Adhesion.
Answer: when two unlike substances attract
◉ universal solvent.
Answer: water can dissolve into many substances: ionic compounds and
polar molecules dissolve easily in water
QUESTIONS AND ANSWERS 2026
COMPLETE EXAM PREP WITH
VERIFIED SOLUTIONS
◉ Dependent Variable.
Answer: -what is being measured or observed during experiment; effect
◉ Control Variable.
Answer: -use as the comparison "group" in an experiment
◉ What makes an experiment reliable?.
Answer: -has been tested numerous times by more than one scientist
-it follows steps of scientific method
-no bias
-information came from third party
-study been retested
-results are published in scientific journal
◉ Theory.
Answer: -are subject to revision and modification over time
◉ Laws.
,Answer: -developed when observations around the world are tested and
retested until there is a consensus in a scientific community; not changed
over time
◉ Dissection Light Microscope.
Answer: -lowest magnification for microscopes
-views organs and tissues during dissection
-views 3D specimens
◉ Compound Light Microscope.
Answer: -40x to 400x
-views tissue samples, blood, microorganisms, and larger details of some
cells
-common classroom microscope
◉ Transmission Electron Microscope.
Answer: -passes a beam of electrons through a thin specimen
-mainly used to study internal structures of cells that cannot be viewed
under light microscopes
◉ Scanning Electron Microscope.
Answer: -electron beam passes over specimens surface that is coated
with thin layer of gold metal
-studies details of specimen's surface
, -3D and black&white
◉ Polar Molecules.
Answer: -have an end that is slightly positive and an end that is lightly
negative
-water
◉ Hydrogen Bonding.
Answer: -attraction between the slightly positive hydrogen of one
molecule and the slightly negative oxygen of another water molecule
◉ Surface tension.
Answer: elastic-like forces existing on the surface of a liquid caused by
asymmetry in the attractive forces between the liquid molecules
◉ Cohesion.
Answer: when two like substances attract to one another
◉ Adhesion.
Answer: when two unlike substances attract
◉ universal solvent.
Answer: water can dissolve into many substances: ionic compounds and
polar molecules dissolve easily in water
