This video takes an in-depth look at how a cell works, specifically its basic internal structures and processes. It includes a look at single celled organisms, the differences between plant and animal cells, the challenge of becoming multicellular, and why cells specialize.
Subjects: Biology
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Biosphere Cycles – Senior
This video examines the workings of the Earth’s biosphere. It discusses how the one way flow of energy from the sun underpins the continual recycling of molecules between living & non-living states. Featured in the video are key nutrient cycles including carbon/oxygen, nitrogen and phosphorous, the research of Jean-Baptiste van Helmont, discussion on how human practices are impacting on nutrient cycles, an examination of how living things decompose. Time-lapse sequences of decomposing organic matter, and a case study of the workings of a major coffee farm and how it’s proprietors attempt to manage production thanks to their improved understanding of cycles in the biosphere.
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Cell Division
This video unravels the mystery of cell division using clear and simple animations, together with exceptional micro photographic images of cell division occurring in animal and plant cells. Topics explored include mitosis, meiosis, cytokinesis, morphogenesis, and embryogenesis.
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Digestion and Fluid Balance
Digestion and Fluid Balance provides numerous examples of how animals control their food and fluid input/output to survive.
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The Neural Connection
The Neural Connection features examples of a polo player in action and a novice at a firing range to demonstrate how reflex actions and chemical responses are triggered directly by sensory stimuli.
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Endocrine Control: Systems in Balance
Endocrine Control: Systems in Balance touches on the basics of pituitary function, effects on the adrenal gland, and the influence of biofeedback in regulating the reactions to stress.
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Animal Reproduction and Development
Animal Reproduction and Development describes the continuation of life through the physical process of reproduction.
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Populations and Communities
Populations and Communities explores various examples of species interaction, including predation, commensalism, mutualism, and competitive exclusion.
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Ecosystems and the Biosphere
Ecosystems and the Biosphere shows how a delicate balance of interactions determines life and death for the inhabitants of any ecosystem.
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The Human Factor
The Human Factor demonstrates how human behavior affects the global environment. The possible effects of ozone layer reduction and global warming are discussed.
