Unit 1: Chemical, cellular, & evolutionary foundations Flashcards
Learning Objectives
- Distinguish between science (scientific method) and
other forms of investigation/exploration. - Use the scientific method to make observations,
develop hypotheses, design experiments, and develop
models - Explain why cells are considered the fundamental unit
of life. - Recognize how evolution explains the unity and
diversity of life. - Explain how the interaction of organisms with each
other and their environment impacts evolution. - Explain the statement “humans have become major
agents in ecology and evolution”.
Independent variable
The variable
that is deliberately changed
Dependent variable
what is being
measured
Control variables
variable that stay
the same during the experiment
Scientific method
- Question
- Research
- Hypothesis
- Experiment
- Data Analysis
- Conclusion
- Communication.
Inductive Reasoning
a type of reasoning that involves drawing a general conclusion from a set of specific observations.
“bottom-up”
Deductive reasoning
a logical approach where you progress from general ideas to specific conclusions
“top-down”
Properties of Life
– Order (organization)
– Sensitivity or Response to
Stimuli
– Reproduction
– Growth and Development
– Regulation
– Homeostasis
– Energy Processing
Cell Theory
– All cells arise from other cells
– All organisms are composed of one or more
cells
What property of
life does cell theory come from?
A. Order (organization)
B. Sensitivity or Response to Stimuli
C. Reproduction
D. Growth and Development
E. Energy Processing
Order the
following from least to most
complex:
A. Ecosystem, organ system, community, molecule, cell
B. Organ system, community, ecosystem, cell, molecule
C. Community, molecule, organ system, cell, organ system
D. Cell, molecule, organ system, community, ecosystem
E. Molecule, cell, organ system, community, ecosystem
Atom
smallest unit
of an element that still
retains the element’s
properties
Molecule
A cluster of
atoms held
together by
chemical bonds
Organelle
A structure
within a cell
that performs a
specific function
Cell
The simplest entity that has all
the properties of life
Tissue
A group of similar cells that carries
out a particular function in an
organism
Organ
A structure
consisting of two or
more tissues that
performs specialized
functions within an
organism
Organ System
A group of body
parts that carries out a particular
function in an organism
Organism
individual
composed of many
coordinated organ
systems
Population
group of
individuals of the same species
occupying a specific area
(species = organisms that
interbreed)
Community
all
populations of all species occupying a specific area
Ecosystem
A
community and its physical
environment
All biotic and abiotic
components of a certain
area
Biosphere
Those
regions of the earth’s
waters, crust and
atmosphere in which
organisms can exist.
The global ecosystem
Which of the
following do the three domains of life
all have in common?
1. Made of cells
2. Contain mitochondria
3. Contain a phospholipid bilayer (plasma
membrane)
1 and 3
