Bio 189 Midterm Exam – Questions & Accurate
Solutions
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Terms in this set (131)
Archaea -Singular, archaeon.
-Group of prokary-otes that are more closely
related to eukaryotes than to bacteria.
Atom Smallest unit of matter. Consists of varying numbers
of protons, neutrons, and electrons.
Bacteria Single-celled organisms that lack a nucleus;
prokaryotes
Biology The scientific study of life.
Cell -Smallest unit of life.
-All start out life with a plasma membrane, cytosol,
and DNA.
Community All populations of all species living in a defined
area.
Control group In an experiment, a group of individuals identical to
an experimental group except for the variable
under investigation.
,Controlled variable Factor in an experiment that scientist purposely
keep the same
Critical thinking The act of evaluating information before accepting
it.
Dependent variable The outcome factor; the variable that may change
in response to manipulations of the independent
variable.
DNA -Deoxyribonucleic acid.
-Double-stranded nucleic acid that consists of
deoxyribose-containing nucleotides.
-Carries hereditary information.
Experiment Statement, based on a hypothesis, about a
condition that should reasonably occur if the
hypothesis is correct.
Experimental group -In an experiment, a group of individuals who have
a certain characteristic or receive a certain
treatment. -Tested side by side with a control
group.
Fungi -Plural, fungi.
-Single-celled or multicelled eukaryotic
-Consumer that breaks down material outside itself,
then absorbs nutrients released from the
breakdown.
Genus -Plural, genera.
-A group of species that share a unique set of traits.
-First part of a species name.
, Homeostasis Process in which cells and multicelled organisms
keeps their internal conditions within tolerable
ranges by sensing and responding appropriately to
change.
Independent variable The experimental factor that is manipulated; the
variable whose effect is being studied.
Inheritance Transmission of DNA to offspring.
Law of nature Generalization describing a consistent natural
phenomenon that has an incomplete scientific
explanation.
Model Analogous system in an experiment; tested in
place of another subject.
Molecule Two or more atoms joined by chemical bonds.
Nutrient A substance that an organism must acquire from
the environment to support growth and survival.
Organ In multicelled organisms, a structure that consists
of tissues engaged in a collective task.
Organism Individual that consists of one or more cells.
Organ system In multicelled organisms, a set of interacting organs
and tissues that carry out one or more body
functions.
Solutions
Save
Terms in this set (131)
Archaea -Singular, archaeon.
-Group of prokary-otes that are more closely
related to eukaryotes than to bacteria.
Atom Smallest unit of matter. Consists of varying numbers
of protons, neutrons, and electrons.
Bacteria Single-celled organisms that lack a nucleus;
prokaryotes
Biology The scientific study of life.
Cell -Smallest unit of life.
-All start out life with a plasma membrane, cytosol,
and DNA.
Community All populations of all species living in a defined
area.
Control group In an experiment, a group of individuals identical to
an experimental group except for the variable
under investigation.
,Controlled variable Factor in an experiment that scientist purposely
keep the same
Critical thinking The act of evaluating information before accepting
it.
Dependent variable The outcome factor; the variable that may change
in response to manipulations of the independent
variable.
DNA -Deoxyribonucleic acid.
-Double-stranded nucleic acid that consists of
deoxyribose-containing nucleotides.
-Carries hereditary information.
Experiment Statement, based on a hypothesis, about a
condition that should reasonably occur if the
hypothesis is correct.
Experimental group -In an experiment, a group of individuals who have
a certain characteristic or receive a certain
treatment. -Tested side by side with a control
group.
Fungi -Plural, fungi.
-Single-celled or multicelled eukaryotic
-Consumer that breaks down material outside itself,
then absorbs nutrients released from the
breakdown.
Genus -Plural, genera.
-A group of species that share a unique set of traits.
-First part of a species name.
, Homeostasis Process in which cells and multicelled organisms
keeps their internal conditions within tolerable
ranges by sensing and responding appropriately to
change.
Independent variable The experimental factor that is manipulated; the
variable whose effect is being studied.
Inheritance Transmission of DNA to offspring.
Law of nature Generalization describing a consistent natural
phenomenon that has an incomplete scientific
explanation.
Model Analogous system in an experiment; tested in
place of another subject.
Molecule Two or more atoms joined by chemical bonds.
Nutrient A substance that an organism must acquire from
the environment to support growth and survival.
Organ In multicelled organisms, a structure that consists
of tissues engaged in a collective task.
Organism Individual that consists of one or more cells.
Organ system In multicelled organisms, a set of interacting organs
and tissues that carry out one or more body
functions.
