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Showing 1 to 15 of 343 results Save | Export
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Naoto Shirasu; Shin'ichiro Yasunaga – Biochemistry and Molecular Biology Education, 2024
Here, we propose a laboratory exercise to quickly determine single nucleotide polymorphisms (SNPs) in human "alcohol dehydrogenase 1B (ADH1B)" and "aldehyde dehydrogenase 2 (ALDH2)" genes involved in alcohol metabolism. In this exercise, two different genotyping methods based on polymerase chain reaction (PCR), namely…
Descriptors: Genetics, Biochemistry, Students, Science Instruction
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Omar A. El Seoud; Nicolas Keppeler; Daiana M. F. Sandrini; Giovanni R. Morselli – Journal of Chemical Education, 2023
An active-learning approach was employed in a project for our chemistry major students on the synthesis of biodiesel (BD) from an Amazon region oil. The project, involving activities in class and in the laboratory, was given during 8 weeks of the spring semester of 2022. The students were asked about their previous contact with the synthesis and…
Descriptors: Chemistry, Science Laboratories, Majors (Students), Undergraduate Students
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Joseph W. Shane; Lauren E. Shearer; John N. Richardson; Jeb S. Kegerreis – Journal of Chemical Education, 2023
Kombucha, a popular probiotic beverage, contains detectable concentrations of ethyl alcohol. To be sold as a nonalcoholic product, alcohol concentrations in kombucha must be shown to be less than 0.5% by volume. This paper describes the use of an inexpensive, commercially available sensor to reliably and accurately measure alcohol concentrations…
Descriptors: Food, Chemistry, Measurement, Science Laboratories
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Jixin Wang; Wenshui Zhou; Yin Li; Mei Yu; Zheng Zhu – Journal of Chemical Education, 2024
By hosting a college students' laboratory skills contest, we provide an interesting activity for students to cultivate good laboratory practices and thereby improve their laboratory skills. The substance of this contest is the detection of the hardness of water, which involves numerous laboratory skills such as solution preparation, weight by…
Descriptors: Undergraduate Students, Chemistry, Science Instruction, Laboratory Experiments
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Montalto, Cassandra; Wong, Sissy S. – Science Teacher, 2022
Modeling is an important tool in science teaching and learning. Constructing a model instead of replicating one is more meaningful and better supports student learning than analyzing premade models (Firooznia 2015; Gouvea and Passmore 2017; Takemura and Kurabayashi 2014). Models include physical replications of a scientific phenomenon or analyzing…
Descriptors: Science Instruction, Teaching Methods, Models, Genetics
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Tripathi, Swapnil – Physics Teacher, 2021
Shadows produced by sunlight reflected from convex surfaces can be very well defined. This article provides an explanation for this phenomenon as well as a demonstration/lab activity for students to investigate properties of shadows made from sunlight reflected by a curved surface.
Descriptors: Light, Scientific Concepts, Astronomy, Demonstrations (Educational)
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Keira D. Naff; Jeri L. Tyler; Dima H. Hamza; Jonathan D. White – Journal of Chemical Education, 2023
Structure--activity relationships are foundational concepts in biochemistry and drug design. Despite their importance, it can be difficult to create and execute laboratory activities that allow students to directly observe the interactions between small-molecule drugs and their biomolecular targets. Here, we report an activity that investigates…
Descriptors: Genetics, Undergraduate Students, Undergraduate Study, College Science
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Amy S. Cannon; Kate R. Anderson; Mollie C. Enright; Donia G. Kleinsasser; Ann R. Klotz; Natalie J. O'Neil; Lucas J. Tucker – Journal of Chemical Education, 2023
Teaching green chemistry within the K-12 classroom has a positive impact on attitudes and perceptions of chemistry in society for future scientists and professionals, resulting in safer, less hazardous chemistry experiments and demonstrations. The state of New York has taken advantage of the benefits that green chemistry provide in the classroom…
Descriptors: Faculty Development, High School Teachers, Chemistry, Science Instruction
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Mulford, Douglas R. – Journal of Chemical Education, 2021
The liquid nitrogen cloud demonstration is an effective, dramatic, large-scale demonstration to illustrate gas laws and cloud/fog (aerosol) formations for classes and large-scale outreach events. When performed at full scale, it is common to produce a cloud 20-30 feet in height. Its effect can be further enhanced by adding brightly colored…
Descriptors: Science Instruction, Chemistry, Demonstrations (Educational), Scientific Concepts
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Ramos-de-la-Peña, Ana Mayela; Mercado-Valenzo, Oscar Mario; Clorio-Carrillo, Jorge Abraham; López-Incio, Jazmin Dessiret; Monroy-Borrego, Andrea Gabriela; Marrero-Bretado, Mariana Monserrat; González-Valdez, José; Aguilar, Oscar – Biochemistry and Molecular Biology Education, 2021
A laboratory exercise for undergraduate advanced students of enzymology and biocatalysis is presented. Since enzyme assays can be quenched or continuous, this experiment compares the performance of two quenching agents for lactase, in a continuous setup. Enzymatic activity of [beta]-galactosidase ("Aspergillus oryzae") was determined…
Descriptors: Science Activities, Undergraduate Students, Advanced Courses, College Science
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José Luís Araújo; Isabel Saúde – Journal of Chemical Education, 2024
The rapid evolution of Artificial Intelligence (AI) is profoundly shaping our society. Among various AI tools, ChatGPT stands out for its user-friendly nature and wide accessibility to the public. However, despite their countless potential benefits, these tools also face significant challenges, especially in sensitive areas like Education. In this…
Descriptors: Artificial Intelligence, Technology Uses in Education, Natural Language Processing, Chemistry
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Kong-Ching Wong; K. Brant Knutzen; Ignatius Ip; Steve Po-Yam Li – Journal of Chemical Education, 2023
Surface chemistry is a challenging realm for most students because of its abstract nature and numerous associated mathematical equations. Herein we report a set of dedicated sequential inquiry-based learning (IBL) activities enriched with virtual laboratory learning and hands-on instructions. The activities were intended to help students grasp…
Descriptors: Active Learning, Inquiry, Chemistry, Educational Technology
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Nicastri, Kate A.; Hill, Nicholas J. – Journal of Chemical Education, 2021
A laboratory project to introduce upper-level undergraduates to Pd-catalyzed C-N [sigma]-bond forming reactions is described. The exercise involves evaluation of monodentate phosphine ligands and solvents for the Buchwald-Hartwig coupling of 4-chloro-or 4-bromo-anisole with morpholine. Students gain experience in the synthesis of a biarylphosphine…
Descriptors: Science Instruction, Science Laboratories, College Science, Undergraduate Students
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Rivera Gavidia, Luis Miguel; Marrero Galván, Juan José – International Journal of Science Education, 2023
The aim of this research was to assess students' ability to explain scientific phenomena by means of a POE pedagogical tool. To achieve this aim, we conducted home experiments in a digital environment. In this qualitative and transversal ex-post-facto research, 775 pupils (aged 13-18 years) enrolled in compulsory secondary education from the…
Descriptors: Scientific Literacy, Science Process Skills, Prediction, Observation
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Palmquist-Gomes, Paul; Pérez-Pomares, José María; Guadix, Juan Antonio – Biochemistry and Molecular Biology Education, 2021
A high variety of experimental model organisms have been used in developmental biology practical lectures. The work with developing embryos is crucial to make students aware of the multiple biological phenomena underlying normal animal embryogenesis and morphogenesis and represent a unique experimental platform to analyze the impact of molecular…
Descriptors: Biochemistry, Undergraduate Students, College Science, Embryology
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