Bozeman Science
Photosynthesis Lab Walkthrough
Mr. Andersen shows you how to sink leaf chads in preparation for the AP Biology photosynthesis lab. An empty syringe is used to remove gas from the leaves before the lab. As the chloroplasts absorb light they produce oxygen bubbles which...
Bozeman Science
AP Biology Labs - part 1
Paul Andersen details the first 7 of 13 labs in the AP Biology Curriculum. The following topics are all covered: Artificial Selection, Hardy-Weinberg Equilibrium, Comparing DNA using BLAST, Diffusion and Osmosis, Photosynthesis,...
Bozeman Science
AP Biology Lab 4: Plant Pigments and Photosynthesis
Paul Andersen explains how pigments can be separated using chromatography. He shows how you can calculate the Rf value for each pigment. He then explains how you can measure the rate of photosynthesis using leaf chads and water...
The March of Time
1949: PHOTOSYNTHESIS LABORATORY
MOT 1949: PHOTOSYNTHESIS LABORATORY: INT MS Female scientist in plant lab. MS Cutting corn stalks. MS Cultivating in flasks of water, shaken by machine. MS Man pouring radioactive carbon. VS Removing leaf from charger, into beaker....
National Geographic
What's in a Lichen? How Scientists Got It Wrong for 150 Years | Short Film Showcase
For 150 years, scientists believed lichen were defined by a symbiotic relationship between a fungus and algae. Meet the team of researchers who upended this belief in this short film by Andy Johnson, Talia Yuki Moore, Chris A. Johns, and...
Science360
Sucrose molecular structure - Sweet Side of Chemistry
Sucrose is table sugar—that ubiquitous sweet white crystal that sweetens our tea, coffee and apple pies, yet is also the villain blamed for tooth decay and other health issues. Through its Biological Sciences Directorate, NSF has funded...
The Royal Institution
Jim Al-Khalili - Quantum Life: How Physics Can Revolutionise Biology
In this Friday Evening Discourse at the Royal Institution, Professor Jim Al-Khalili explores how the mysteries of quantum theory might be observable at the biological level. Although many examples can be found in the scientific...
MinuteEarth
Why Are Leaves Green? Part 1
Consider a question that baffles even scientists. Why are leaves green? The video lesson offers a theory that begins with the first aquatic plants. Learners consider alternative explanations as well.
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