BIO 101 LAB MIDTERM UNC FINAL
TEST 2026 QUESTIONS WITH
CORRECT ANSWERS GRADED A+
◍ objective observation.
Answer: observations can be verified, often involve counting or measuring
◍ subjective observation.
Answer: observer-specific observations, qualitative
◍ hypothesis.
Answer: tentative explanation of cause and effect based on underlying
observed phenomena, must be testable
◍ scientific method.
Answer: A series of steps followed to solve problems including collecting
data, formulating a hypothesis, testing the hypothesis, and stating
conclusions. (involves undertaking an experiment)
◍ independent variable.
Answer: the cause
◍ dependent variable.
Answer: the effect
◍ a hypothesis must be.
Answer: testable and falsifiable
◍ control variable.
Answer: all the factors are the same as the test group, except this one factor
being tested is left in its normal, unmanipulated state
◍ independent variable.
Answer: The experimental factor that is manipulated; the variable whose
, effect is being studied.
◍ dependent variable.
Answer: the variable that is being measured
◍ protocol.
Answer: description of steps in a scientific investigation
◍ occam's razor.
Answer: if there are several explanations that might fit an observation, the
simplest is most probable and therefore best
◍ prokaryotes.
Answer: unicellular organisms that lack membrane-bound organelles,
including a nucleus; most abundant organisms in the world and found in
virtually every known habitat; reproduce mostly asexually
◍ eukaryotes.
Answer: cells with true nuclei and membrane-bound organelles
◍ in a controlled experiment, an ________ is compared with a _______.
Answer: experimental group; control group
◍ experimental hypothesis.
Answer: predicts the relationship between the IV and the DV; states one
factor effects the other factor
◍ null hypothesis.
Answer: one factor does not affect the other factor (no effect noted)
◍ domain Bacteria.
Answer: bacteria and cyanobacteria/blue-green algae
◍ nitrogen fixation.
Answer: bacteria converts nitrogen into forms that can be used by plants
◍ decomposers.
Answer: bacteria break down dead plants and animals, and thereby return
the organic materials to the system to be used by other organisms
, ◍ There are approximately __ chemical __ in the human body.
Answer: 60; elements
◍ Most abundant element in the human body.
Answer: oxygen (65%)
◍ Atoms.
Answer: smallest unit of matter; three subatomic particles: protons,
neutrons, and electrons
◍ photosynthetic bacteria.
Answer: use light as their energy source in a process similar to
photosynthesis in plants, however, they do not use water, pigments are
different in structure, and lack chloroplasts
◍ atomic mass.
Answer: the number below the element symbol; is composed of protons and
neutrons
◍ chemosynthetic bacteria.
Answer: obtain their energy from the oxidation of inorganic substances
◍ Electrons determine an atom's chemical behavior. They have negligible
mass and are in _______.
Answer: energy levels (shells)
◍ cation.
Answer: the atom that loses the electron (has a positive charge)
◍ anion.
Answer: the atom that gains the electron (has a negative charge)
◍ bacilli.
Answer: rod-shaped bacteria
◍ solution.
Answer: A homogeneous mixture of two or more substances
◍ cocci.
TEST 2026 QUESTIONS WITH
CORRECT ANSWERS GRADED A+
◍ objective observation.
Answer: observations can be verified, often involve counting or measuring
◍ subjective observation.
Answer: observer-specific observations, qualitative
◍ hypothesis.
Answer: tentative explanation of cause and effect based on underlying
observed phenomena, must be testable
◍ scientific method.
Answer: A series of steps followed to solve problems including collecting
data, formulating a hypothesis, testing the hypothesis, and stating
conclusions. (involves undertaking an experiment)
◍ independent variable.
Answer: the cause
◍ dependent variable.
Answer: the effect
◍ a hypothesis must be.
Answer: testable and falsifiable
◍ control variable.
Answer: all the factors are the same as the test group, except this one factor
being tested is left in its normal, unmanipulated state
◍ independent variable.
Answer: The experimental factor that is manipulated; the variable whose
, effect is being studied.
◍ dependent variable.
Answer: the variable that is being measured
◍ protocol.
Answer: description of steps in a scientific investigation
◍ occam's razor.
Answer: if there are several explanations that might fit an observation, the
simplest is most probable and therefore best
◍ prokaryotes.
Answer: unicellular organisms that lack membrane-bound organelles,
including a nucleus; most abundant organisms in the world and found in
virtually every known habitat; reproduce mostly asexually
◍ eukaryotes.
Answer: cells with true nuclei and membrane-bound organelles
◍ in a controlled experiment, an ________ is compared with a _______.
Answer: experimental group; control group
◍ experimental hypothesis.
Answer: predicts the relationship between the IV and the DV; states one
factor effects the other factor
◍ null hypothesis.
Answer: one factor does not affect the other factor (no effect noted)
◍ domain Bacteria.
Answer: bacteria and cyanobacteria/blue-green algae
◍ nitrogen fixation.
Answer: bacteria converts nitrogen into forms that can be used by plants
◍ decomposers.
Answer: bacteria break down dead plants and animals, and thereby return
the organic materials to the system to be used by other organisms
, ◍ There are approximately __ chemical __ in the human body.
Answer: 60; elements
◍ Most abundant element in the human body.
Answer: oxygen (65%)
◍ Atoms.
Answer: smallest unit of matter; three subatomic particles: protons,
neutrons, and electrons
◍ photosynthetic bacteria.
Answer: use light as their energy source in a process similar to
photosynthesis in plants, however, they do not use water, pigments are
different in structure, and lack chloroplasts
◍ atomic mass.
Answer: the number below the element symbol; is composed of protons and
neutrons
◍ chemosynthetic bacteria.
Answer: obtain their energy from the oxidation of inorganic substances
◍ Electrons determine an atom's chemical behavior. They have negligible
mass and are in _______.
Answer: energy levels (shells)
◍ cation.
Answer: the atom that loses the electron (has a positive charge)
◍ anion.
Answer: the atom that gains the electron (has a negative charge)
◍ bacilli.
Answer: rod-shaped bacteria
◍ solution.
Answer: A homogeneous mixture of two or more substances
◍ cocci.
