Introduction to Biology Lecture 1. Much of the text material in the lecture notes is from our textbook, “Essential Biology with Physiology” by Neil A. Campbell, Jane B. Reece, and Eric J. Simon (2004 and 2008). I don’t claim authorship. Other sources were sometimes used, and are noted. Outline.
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Introduction to BiologyLecture 1
Much of the text material in the lecture notes is from our textbook, “Essential Biology with Physiology” by Neil A. Campbell, Jane B. Reece, and Eric J. Simon (2004 and 2008). I don’t claim authorship. Other sources were sometimes used, and are noted.
Medicines Derived From Plants
Vinblastine is used in some leukemia drugs.
Menthol is an ingredient in some cough medicines.
Medicines Derived from Plants
Belladonna, Europe, western Asia, Africa, and North America
Atropine is used as an pupil dilator in eye exams.
Pacific Yew, Pacific Northwest and British Columbia
Taxol is an ovarian cancer drug.
The design of the B-2 aircraft included life support, ozone effects, rapid decompression effects, ejection systems and survivability, NBC protection, acoustic noise cancellation, workload assessment, physical and mental fatigue, anthropometry, visual and acoustic processing, situational awareness, vibration effects, and biodynamic modeling.
First Steps Beyond Our Planet
Ed White, first U.S. spacewalk, Gemini program, 1965
Andromeda Galaxy (M31)
With billions of stars in a galaxy and billions of galaxies in our universe,
is life unique to our planet?
Science, Philosophy, Theology, Art
Paul Gauguin, Where Do We Come From? Where Are We Going To? (1897-98)
This course is based on the scientific method—I’m not sufficiently knowledgeable to teach other approaches.
Our Journey Begins Here
We will soon get started…
Human brain—the left cerebral hemisphere, cerebellum, and brainstem are visible.
… And Here
An artist’s conception
Fungi living in mutual association with roots are essential to many plants.
Eaton Canyon Falls
Near Altadena, California
Bolsa Chica Wetlands
Just south of Seal Beach, California.
Life’s Basic Unit
Plants, animals, and fungi (animal cell shown)
Not to scale: A prokaryotic cell is about 1000 times smaller in volume than a eukaryotic cell.
Diversity of Life
Domains and Kingdoms
Green represents the primary focus of this course
The domains bacteria and archaea consist of prokaryotic cells; the domain eukarya consists of eukaryotic cells
History of Life
Exploration of Tierra Del Fuego
Voyage of Discovery
Then and Now
Queen Mary 2, 2006
H.M.S. Beagle, 1831
Both ships have circumnavigated the globe, but only one journey led to a profound change in science and worldview.
Darwin’s later microscope that he used to study plant and barnacle specimens.
Finches in the Galapagos Islands have vastly varying beaks.
Small tree finch
Medium tree finch
Large tree finch
Large ground finch
Medium ground finch
Small ground finch
Large cactus ground finch
Cactus ground finch
Large, powerful beak
Green warbler finch
Gray warbler finch
Sharp-beaked ground finch
Meet the Beetles
2. Birds eliminate individual
beetles (usually white shells)
1. Beetle population has a specific
inherited trait (white or dark gray shells)
These imaginary beetles typically
live on a dark-colored tree bark
4. Traits that enhance survival and
reproductive success predominate
3. The survivors reproduce
A scientist’s sketch of diatoms.
Test supports hypothesis;
make additional predictions
and test them.
Test does not support hypothesis;
revise or reject hypothesis, or
develop a new one.
(Experiment or study)
A Tale of Two Snakes
Eastern Coral Snake
Both species of snake live in the eastern Carolinas
Details of the experiment are described in the textbook.
Percentage of Total Attacks
In Plain Brown
With Colored Rings
Culture of Science
Science Is International
Words and Terms to Know
Possible Test Items