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Zhao, Yanlu; Lim, Minyoung; Choi, Sungmoon; Yu, Junhua – Journal of Biological Education, 2022
The attractive photophysical properties of luminescent nanoparticles have prompted numerous studies on their synthesis and biological applications. Due to the complexity of components, sizes, morphologies, and strong light scattering of the nanoparticles the absorption spectrum alone is not enough for characterising and analysing the real…
Descriptors: Spectroscopy, Cytology, Light, Science Instruction
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Forget, Nathalie; Belzile, Claude; Rioux, Pierre; Nozais, Christian – Journal of Biological Education, 2010
The microbial growth curve is widely studied within microbiology classes and bacteria are usually the microbial model used. Here, we describe a novel laboratory protocol involving flow cytometry to assess the growth dynamics of the unicellular microalgae "Isochrysis galbana." The algal model represents an appropriate alternative to…
Descriptors: Science Laboratories, Ecology, Microbiology, Science Instruction
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Marques, M.; Arrabaca, J.; Chagas, I. – Journal of Biological Education, 2005
Leaves of higher terrestrial plants have small pores--stomata--responsible for gas exchange. The opening of each stoma results from the osmotic uptake of water by two specialised cells--the guard cells. Because of the involvement in this mechanism of ATPase-proton pumps and active transport of ions across membranes, we have designed an Exploring…
Descriptors: Physiology, Biology, Molecular Structure, Cytology