This "Eukaryotic Organelles" learning object is the from the Sumanas resource series. Sumanas offers a robust selection of content and services that are directed at enhancing the learning experience.
Paul Andersen lists major evidence for the existence of evolution. He begins with a discussion of Charles Darwin and the evidence that he presented in the Origin of Species, including biogeography, fossils, and homologies. He also explains how DNA evidence can be used to trace evolutionary history.
Paul Andersen describes pieces of evidence that Charles Darwin used to support the idea of evolution and his process of natural selection. He begins with the following evidence use in the Origin of Species; artificial selection, biogeography, fossils and homologies.
Paul Andersen explains how life has evolved and continues to evolve today. A brief discussion of artificial, natural and sexual selection is included. The beak of the finch is used to explain how directional selection is achieved.
Hank gets real with us in a discussion of evolution - it's a thing, not a debate. Gene distribution changes over time, across successive generations, to give rise to diversity at every level of biological organization.
The video resource "Evolution: It's a Thing - Crash Course Biology #20" is included in the "Biology" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
The Evolution Library has a large of useful resources indexed by topic. Contains numerous interactive exercises and simulations keyed to the episodes of the PBS series
A 13-week laboratory curriculum accompanies the original course at the University of Minnesota.
Hank introduces us to the relatively new field of evolutionary developmental biology, which compares the developmental processes of different organisms to determine their ancestral relationship, and to discover how those processes evolved. Also fruit flies with eyes on their legs and chickens with teeth!
The video resource "Evolutionary Development: Chicken Teeth - Crash Course Biology #17" is included in the "Biology" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
This "Evolution in Action" learning object is the from the Sumanas resource series. Sumanas offers a robust selection of content and services that are directed at enhancing the learning experience.
Paul Andersen describes how cell communication is used in both single-celled and multicellular organisms. He starts by describing the symbiotic relationship between the bobtail squid and the bacteria Vibrio fisheri. He explains how bacteria use quorum sensing to communicate between each other and respond to changes in their environment.
This "The Evolution of Cellular Organelles" learning object is the from the Sumanas resource series. Sumanas offers a robust selection of content and services that are directed at enhancing the learning experience.
Paul Andersen details examples of natural selection in the world. He starts by explaining how changes in global temperatures are causing plants to adapt. He explains how mutations cause changes in phenotype which give organisms varying levels of fitness.
Hank takes us on the fascinating journey through our excretory system to learn how our kidneys make pee.
The video resource "The Excretory System: From Your Heart to the Toilet - CrashCourse Biology #29" is included in the "Biology" course from the resources series of "Crash Course". Crash Course is a educational video series from John and Hank Green.
The primary purpose of this course is to render the invisible world of microbes visible to farmers. This course provides scientific-based instruction exploring how microbes can assist agriculture. Although the course is designed for farmers, this material can also help extension agents, curious citizen scientists, and other non-experts interested in enhancing their microbial literacy.
To evaluate the different integumentary systems found in the animal kingdom, students conduct an exploratory research-based lab. During the activity, students create a model epidermis that contains phosphorescent powder and compare the results to a control model. After learning about the variations of integumentary systems—systems that comprise the skin and other appendages that act to protect animal bodies from damage—students act as engineers to mimic animal skin samples. Their goal is to create a skin sample that closely represents the animal they are mimicking while protecting the base ‘epidermis’ from UV light.
A single lecture given at Kwame Nkrumah University of Science and Technology about bacterial vaginosis, HACEK infections, and legionella.
Paul Andersen explains how epinephrine is responsible for changes in chemistry of our body associated with the fight or flight response. Epinephrine released by the adrenal medulla are received by a number of organs associated with the sympathetic nervous system.