Download Unity of Life - stephen fleenor

Warm-Up (3/28)
Describe the relationship
between DNA and RNA in the
synthesis of proteins. Use the
following words in your
explanation: transcription,
translation, nucleus, ribosome.
Name
Date
Period
3D.1a: Communication involves transduction of stimulatory or inhibitory signals
from other cells, organisms or the environment.
3D.1b: Correct and appropriate signal transduction processes are generally under
strong selective pressure.
1B.1a: Structural and functional evidence supports the relatedness of all domains.
1B.1a.1: DNA and RNA are carriers of genetic information through
transcription, translation, and replication.
1B.1a.2: Major features of the genetic code are shared by all modern living
systems.
1B.1a.3: Metabolic pathways are conserved across all currently recognized
domains.
1B.1b: Structural evidence supports the relatedness of all eukaryotes.
Illustrative example: membrane-bound organelles (mitochondria and/or
chloroplasts)
Unity of Life
The structure and
components of DNA are
conserved (shared)
across all lifeforms.
Unity of Life
The structure and
components of DNA are
conserved (shared)
across all lifeforms.
The same is
true of RNA.
Unity of Life
amino acid sequence
The structure and
components of DNA are
conserved (shared)
across all lifeforms.
The same is
true of RNA.
The same
is true of
proteins.
Unity of Life
The same is true of the genetic code.
Unity of Life
The same is true of
metabolic pathways...
“
Glycolysis”
Unity of Life
The same is true of
metabolic pathways...
“
ATP Synthesis”
Unity of Life
The same is true of
metabolic pathways...
...and of cell structures…
Unity of Life
The same is true of
metabolic pathways...
...and of cell structures…
…and of signal
transduction
pathways.
Unity of Life
The unity of life suggests the relatedness of life.
Bacteria
Archaebacteria
Eubacteria
The 3 Domains of Life
Unity of Life
The unity of life suggests the relatedness of life.
Bacteria
Archaebacteria
Eubacteria
mitochondria and nuclei
The 3 Domains of Life
Critical Thinking Question #1
Justify the claim that all living
organisms share a common
ancestor by describing the essential
properties of all cells. (LO 1.16)
Critical Thinking Question #2
Eukaryotes, comprising all plants, animals,
fungi, and uni- and multi-cellular organisms
referred to as protists, are the only
organisms with membrane-bound
compartments inside their cells (such as
lysosomes, mitochondria, or nuclei).
Describe how the presence of membranebound compartments in all eukaryotes
suggests their relatedness to one-another.
(LO 1.15)
Closure
On the piece of white paper from the
back, answer the following question:
Describe the basic features which all
cells must possess in order to engage in
signal transduction.
Name
Date
Period
Scale
1 – 10