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All Journal Al Jahiz: Journal of Biology Education Research Biosaintifika: Journal of Biology & Biology Education
Santos, Americo dos
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Environmental Science Languange, Linguistic, Communication & Media

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Improving Student Abilities in Plant Anatomy Courses Using a Collaboration of Research-Based Learning Models and Gamification Techniques Nau, Getrudis Wilhelmina; Sepe, Florentina Yasinta; Missa, Hildegardis; Santos, Americo dos
Al Jahiz Vol 5 No 2 (2024): Al-Jahiz: Journal of Biology Education Research, July-December 2024
Publisher : Fakultas Tarbiyah dan Ilmu Keguruan IAIN Metro, Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32332/al-jahiz.v5i2.9328

Abstract

The quality of education in NTT is still low and needs to be improved. One of them is by improving the quality of learning through the collaboration of innovative learning models. The focus of this study was to determine the increase in students' abilities in plant anatomy courses using collaborative research-based learning models and gamification-based assessment techniques. This pre-experiment research used a qualitative research approach. The research sample was determined using purposive sampling technique with one group pretest-postest design. The test data were analyzed descriptively. The results showed that there was a difference in the average pretest of 40.5 and posttest of 80.5. The results of the n-gain calculation obtained a score of 0.6 with the gain category being moderate. Classically, the class was complete with a percentage of 100%. The conclusion of the results of this study is that there is an effect of blended learning strategies through the collaboration of research-based learning models and gamification-based assessment techniques on student learning outcomes in the Unwira Biology Education Study Program.
Antibacterial Production by Endophytic Bacteria from Catharanthus roseus in East Timor Against Methicillin-Resistant Staphylococcus aureus  Missa, Hildegardis; Ndukang, Sardina; Djalo, Aloysus; Nau, Getrudis W.; Susilowati, Ari; Baunsele, Anselmus Boy; Santos, Americo Dos
Biosaintifika: Journal of Biology & Biology Education Vol. 16 No. 2 (2024): August 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v16i2.7675

Abstract

Methicillin-resistant Staphylococcus aureus (MRSA) refers to a group of bacteria that cause infections and present a challenge in treatment due to their resistance to several antibiotics. Therefore, research is needed to discover endophytic bacteria from Catharatus roseus capable of producing new antibiotics. This study aims to identify endophytic bacteria from C. roseus plants originating from Timor Island, as producers of effective antibacterial compounds against MRSA. Antibacterial activity tests were conducted on two types of test bacteria, namely MRSA and Escherichia coli. DNA extraction was performed using the PrestoTM Mini dDNA kit Bacteria, and amplification of the 16S rRNA gene was carried out. The research found bacterial isolates showing morphological similarities to Bacillus sp. Screening results indicated that four bacterial isolates exhibited high potential antibacterial activity against MRSA, as evidenced by the formation of inhibition zones with diameters of approximately 25 mm-35 mm. Amplification of the four endophytic bacterial isolates from C. roseus identified them as Paenibacillae FaCH2, Bacillae BoCH3, Aneurinibacillae BoCH5, Aneurinibacillae BiCH8, which are new species based on 16S rRNA gene similarity of less than 97%. In conclusion, endophytic bacteria from C. roseus producing antibacterial compounds against MRSA have been successfully identified. This is beneficial to society because the antibacterial compounds produced can serve as a basis for developing new drugs that are effective against MRSA infections, considering the increasing antibiotic resistance against MRSA.
Co-Authors Anselmus Boy Baunsele ARI SUSILOWATI Djalo, Aloysus Getrudis Wilhelmina Nau Hildegardis Missa Ndukang, Sardina