In the environment, communication among microorganisms is a key aspect of their lives. Through communication, single cells of a microbial population can coordinate their gene expression and, in consequence, their physiology. Quorum sensing systems (QS) are one of these mechanisms that allow this communication through the production and detection…

Photosynthesis is the predominant metabolic process for energy obtention in plants. Here we describe a case study where a set of anatomical, biochemical, and molecular characters are used to reconstruct the evolution of the C[subscript 4] photosynthetic pathway, within the evolutionary framework provided by the genus "Flaveria." Our main…

This study investigated meaning-making of arrows in a representation of the greenhouse effect among 14-year-old secondary school students. Data was generated during Biology lessons where 74 students discussed how they interpreted a representation from the Swedish Society for Nature Conservation, which is an NGO that produce school material. The…

Gamifying is related to the motivational gain and engagement of participants in these systems, even in situations not exclusively related to the creative and entertainment industry. In the Biology teaching context, motivational strategies have fundamental importance to the learning process. The aim of this work was to investigate the development…

Live cell imaging is a standard technique in experimental biology that enables the observation of isolated cells and tissue slices in real time and the testing of cellular responses to changes in buffer composition. However, most live cell imaging devices require the use of dedicated microscopes and/or specialised stage adaptors, and come at a…

Insects form a highly diverse taxonomic group, which has fundamental ecological functions, but is currently in a process of mass extinction. Here, we present the first cycle of design, implementation, and assessment of a didactic sequence oriented towards improving pre-service teachers' knowledge and appreciation of insect diversity. A…

This study aims to determine what pre-service teachers know about the path of water through the body, and how they intend to explain this knowledge to five-year-old preschool children. This study aims to see the opportunities young children in preschool can obtain from an explanation of the nature of science related to an everyday life activity. A…

Graduates in biology or genetics learn Mendel's laws and Hardy-Weinberg equilibrium as students, and they know, use, and sometimes teach these concepts. However, it is unusual to learn about stochastic processes during the graduate studies of these topics, although the applications of Markov chains in the fields of genetics or biology are…

Plant leaves are green because they contain the green photosynthetic pigments, chlorophylls a and b. Popular science literature, and sometimes even textbooks, state that the greenness is caused by reflection of green light by chlorophyll. In the present study, we compared the reflectance spectra of green leaves to yellow or white leaves of the…

The digestive system (DS) is a fundamental topic in biological science teaching. However, the literature indicates that students have difficulties in learning about it. In the present work, we focus on how early childhood Pre-Service Teachers (PSTs) develop their understanding of the DS regarding the CMP (Components-Mechanisms-Phenomena) framework…

A complex terminology developed around the evolutionary concept of adaptation. One definition of adaptation is synonymous with adaptive evolution and denotes a process of population change driven by natural selection resulting in individuals better able to survive and reproduce in a particular environment (compared to the population before the…

Proteins are essential for cell function, and their biological performance depends on three-dimensional (3D) structures. Insulin is made up of 51 amino acids and is a critical hormone involved in glycaemia regulation. In basic education, concepts involving proteins (synthesis, structure, interactions, and function) are abstract and difficult for…

The discovery of frog abnormalities by students on a school field trip in 1995 sparked hundreds of scientific studies in search of the cause of abnormality. This Socio-Scientific Issue has been used as an inquiry-based learning exercise for training in the practice of science, but it is also well-suited to teaching the nature of science. Our goal…

Providing hands-on practical education without access to laboratories during the COVID-19 pandemic has required creativity and innovation. In this paper, co-authored by academic staff and students, we describe an at-home mobile phone-based 'spectrophotometer' experiment used in an introductory undergraduate biology course. Using colour picker…

Explanation of natural phenomena at one level of biological organisation almost always involves causes that are found at other levels. Although scientists thinking across levels find it easy to explain physiological phenomena, students often perceive this as a challenge. We developed a new graphic organiser called Zoom Map, which is a mode for…