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BIO-EDU: Jurnal Pendidikan Biologi
Published by Universitas Timor
ISSN : -     EISSN : 25276999     DOI : -
Core Subject : Education, Social,
Education Social Sciences
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Articles 203 Documents
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Kajian Kualitas Air berdasarkan Keanekaragaman Plankton di Muara Sungai Donan Mahardika Nur Permatasari; Jefri Anjaini; Hery Irawan; Philipus Uli Basa Hutabarat
BIO-EDU: Jurnal Pendidikan Biologi Vol. 9 No. 2 (2024): BIO-EDU: Jurnal Pendidikan Biologi - August 2024
Publisher : Jurusan Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jbe.v9i2.7440

Abstract

The Donan River estuary is the area where the Donan River meets the Nusakambangan Strait, has a level of pollution that shows an increase, one of which is caused by human activity. Phytoplankton has an important role in determining the status of waters by knowing the diversity and types of plankton. The research aims to determine the community structure of the phytoplankton as a biological indicator and determine the condition of the Donan River Estuary based on the Diversity Index. This research was conducted out in April-May 2024. The sampling method was a sample survey. The results of this research show that the phytoplankton abundance of the Donan River estuary ranges from 42-382 ind/L, which means it is oligotrophic. The results of phytoplankton identification showed that many Bacillariophyceae and Cyanophyceae classes were found. The diversity index value at station 1 is 1.199 and at station 2 is 1.623. The diversity index value shows that the Donan River Estuary has moderate phytoplankton community stability and water quality is moderately polluted. Based on the uniformity index at station 2 the uniformity is more even and based on the dominance index there is no dominant genus.
Antimicrobial Activity of Ethanolic Extract of Loquat Leaves (Eriobotrya japonica (Lindl.)) Against Salmonella spp. and Escherichia coli Henri Pietherson Eryah; Mery Fahik
BIO-EDU: Jurnal Pendidikan Biologi Vol. 11 No. 1 (2026): BIO-EDU: Jurnal Pendidikan Biologi - April 2026
Publisher : Jurusan Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jbe.v11i1.11286

Abstract

Penggunaan bahan pengawet kimia pada produk pangan asal hewan masih sering dijumpai, terutama di pasar tradisional. Penggunaan bahan pengawet sintetis berpotensi menimbulkan risiko terhadap kesehatan karena pada konsentrasi yang berlebihan dapat merusak kualitas dan struktur pangan asal hewan serta memberikan dampak negatif bagi kesehatan konsumen. Oleh karena itu, eksplorasi bahan pengawet alami yang aman dan efektif untuk pangan asal hewan menjadi sangat penting. Daun biwa (Eriobotrya japonica (Lindl.)) mengandung senyawa polifenol, terutama flavonoid dan tanin, yang memiliki aktivitas antimikroba serta berpotensi dimanfaatkan sebagai bahan pengawet alami dan agen biofarmaka. Penelitian ini bertujuan untuk mengevaluasi efektivitas antimikroba ekstrak etanol daun biwa (Eriobotrya japonica (Lindl.)) terhadap bakteri kontaminan pangan, yaitu Salmonella spp. dan Escherichia coli. Ekstrak daun biwa diuji pada konsentrasi 20%, 30%, 40%, 50%, dan 60% menggunakan metode difusi cakram. Hasil penelitian ini diharapkan dapat memberikan bukti ilmiah yang mendukung pengembangan ekstrak daun biwa sebagai bahan pengawet alami untuk produk pangan asal hewan serta menjadi dasar bagi pemanfaatannya dalam teknologi pengawetan pangan dan pengembangan senyawa bioaktif.
Analysis of Botanical Literacy Levels Among Senior High School Students in Urban Schools Diandra Assyifa Pratiwi; Aurelia Caithlyn Zuhra Zafirah; Jessy Amaliasari; Nadia Nurhasanah; Santa Nayla Sitorus; Rizhal Hendi Ristanto; Andi Septiryana; Ade Suryanda
BIO-EDU: Jurnal Pendidikan Biologi Vol. 11 No. 2 (2026): BIOEDU: Jurnal Pendidikan Biologi - August 2026
Publisher : Jurusan Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jbe.v11i2.10002

Abstract

This study aims to analyze the level of botanical literacy among 11th-grade students at SMAN 15 Jakarta. The research employed a survey method using a questionnaire instrument distributed via Google Form, involving 56 students (25 male and 31 female) who had studied botany material within the Biology curriculum. The data were analyzed using a descriptive qualitative approach by classifying scores into botanical literacy categories, calculating frequencies and percentages, and analyzing the relationships between each question indicator to determine the students' level of botanical literacy. The results showed that 15 students (26.79%) were in the Very Low category, 3 students (5.36%) in the Low category, 16 students (28.57%) in the Fair category, 18 students (32.14%) in the High category, and 4 students (7.14%) in the Very High category. Based on the indicators, the General Characteristics of Plants indicator obtained the highest average score (78.57), while the Plant Identification indicator received the lowest average score (28.57). These findings indicate that students have a better understanding of basic plant concepts than the ability to identify plants directly. This research provides an overview of the variation in students' botanical literacy levels and can serve as a foundation for developing more contextual and applicative Biology learning models to enhance comprehension, particularly in the aspects of plant identification and classification.
Analysis of Mangrove Vegetation Abundance and Species Richness in the Mangrove Forest Area of Mojo Village, Ulujami District, Pemalang Regency, Central Java Riskia Hardini; Nabela Fikriyya; Ani Haryati
BIO-EDU: Jurnal Pendidikan Biologi Vol. 11 No. 2 (2026): BIOEDU: Jurnal Pendidikan Biologi - August 2026
Publisher : Jurusan Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jbe.v11i2.10696

Abstract

Ulujami district is one of the districts in Pemalang district and has a mangrove forest area of 445 Ha but continues to suffer abrasion. The purpose of this practice is to know the common and richness of mangrove vegetation in the mangrove forest area of Mojo Village, Ulujami district, Pemalang district. The research was conducted in August 2023 – September 2023. The method used is purposive sampling by dividing 4 stations and each station has 3 plots with different sizes namely 10 x 10 m, 5 x 5 m and 2 x 2 m. Based on the research that has been done on the mangrove species found as many as 4 (four) species of mangrove namely Avicennia alba Blume, Avicenna marina (Forssk.) Vierh., Rhizopora mucronata Poir., and Sonneratia caseolaris (L.) Engl. The sørensen Safety Index has the highest 0-100% range of values in the tree, shrub, and straw categories obtained by plot 1 and 2 with 100% values belonging to very similar categories. The results of water quality measurements at each station in the mangrove forest area of Mojo Village include temperature 28.8-30°C, salinity 25-29 ppt, water pH 5.9 6.21, and DO 5.5-14.9 mg/l.
Bioinformatics Characterization of the AhFAD2 Gene Associated with Fatty Acid Biosynthesis in Peanut (Arachis hypogaea L.) Susi Indriani; Rahmad D; Darmawan; Maroa'; Nur Ni'ma; Monika Agustia
BIO-EDU: Jurnal Pendidikan Biologi Vol. 11 No. 2 (2026): BIOEDU: Jurnal Pendidikan Biologi - August 2026
Publisher : Jurusan Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jbe.v11i2.10998

Abstract

Peanut (Arachis hypogaea L.) is an important legume crop widely cultivated as a source of edible oil and plant-based protein. The quality of peanut oil is largely determined by its fatty acid composition, particularly the oleic to linoleic acid ratio, which is regulated by the fatty acid desaturase gene AhFAD2. This gene catalyzes the conversion of oleic acid into linoleic acid, and natural mutations within AhFAD2 are associated with the high-oleic trait that improves oxidative stability and storage quality of peanut oil. This study aimed to characterize the AhFAD2 gene using a bioinformatics approach to elucidate its molecular structure and functional properties. Gene sequences were retrieved from the NCBI GenBank database and analyzed using multiple sequence alignment to identify genetic variations such as SNPs and insertions/deletions. Protein domain analysis was performed using InterProScan, while functional annotation was supported by UniProtKB. Amino acid sequences were translated using the ExPASy Translate Tool and further examined for conserved motifs and structural features. The results revealed a high level of sequence conservation across accessions, with limited nucleotide variation. The AhFAD2 protein contains a conserved omega-6 fatty acid desaturase domain, histidine-rich catalytic motifs, and transmembrane helices typical of endoplasmic reticulum membrane proteins. Structural prediction indicated stable conformational regions that support its catalytic role in fatty acid desaturation. Overall, these findings provide comprehensive bioinformatics insights into AhFAD2 and support its potential application in peanut breeding programs aimed at improving oil quality.
Profile of Epistemic Assessment Experiences in Science: Scientific Models in Biology Learning Futri Fuspita Ayu; Ana Ratna Wulan; Sariwulan Diana
BIO-EDU: Jurnal Pendidikan Biologi Vol. 11 No. 2 (2026): BIOEDU: Jurnal Pendidikan Biologi - August 2026
Publisher : Jurusan Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jbe.v11i2.11050

Abstract

This study aims to profile high school students’ epistemic assessment experiences of the scientific model in biology learning. A descriptive method was used, involving 225 eleventh-grade students from ten high schools with A and B accreditation in the cities of Bandung and Cimahi. Data were collected via a four-point Likert-scale questionnaire with multiple-response options and semi-structured interviews, then analyzed based on the mean scores for each sub-element. The results indicate that students’ experiences with the epistemic assessment of the scientific model are still not widely present in biology assessments in the classroom, as evidenced by all sub-elements scoring only in the “sometimes” category. The sub-elements of the model for prediction and explanation obtained the highest average (2.50), while the limitations of the model and the differences between the model and reality were the aspects students experienced least frequently (2.31). These findings indicate that biology assessment is still dominated by the use of models to explain and predict phenomena, while evaluative aspects such as comparing and evaluating models have not been widely accommodated. Differences in school accreditation also did not indicate significant differences in the epistemic orientation of assessment. Therefore, biology assessment needs to be more directed toward developing students’ ability to critically evaluate, compare, and revise scientific models.
Evaluating Education and Conservation Functions in Digital Communication of Conservation Institutions: A Content Analysis of Surabaya Zoo's Instagram Account Idham Cholik Ramadhan; Anas Rangga Buana Hanafi
BIO-EDU: Jurnal Pendidikan Biologi Vol. 11 No. 2 (2026): BIOEDU: Jurnal Pendidikan Biologi - August 2026
Publisher : Jurusan Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jbe.v11i2.11104

Abstract

Conservation Institutions (LK) hold a constitutional mandate to perform education and wildlife preservation functions. In the digital era, social media becomes a crucial tool for disseminating ex-situ conservation values to the public. This study aims to evaluate the extent to which the official Instagram account of Surabaya Zoo (@surabayazoo) represents these functions. Utilizing a quantitative content analysis method, this research examined 375 posts over a one-year period, categorized into six message functions: Education (EDU), Conservation (KON), Animal Welfare (KSW), Breeding (PBN), Promotion (PRM), and General Information (IFU). The inter-coder reliability test using the Holsti formula showed an agreement level of 0.918, indicating high data validity. The results reveal a significant imbalance, with promotion content (PRM) dominating at 68.80%, followed by general information (16.00%), and education (9.87%). Meanwhile, crucial aspects such as conservation (3.73%), animal welfare (1.60%), and breeding (0%) received very marginal portions. These findings indicate the commodification of wildlife in digital spaces and the identity disparity of conservation institutions as scientific institutions versus tourist destinations. The study concludes that Surabaya Zoo's digital communication strategy is more oriented towards commercial interests and business marketing rather than strengthening conservation literacy. A reorientation of content policy is required to align with the ethical identity of conservation institutions as biodiversity preservation and educational entities.
Analysis of Students' Reflective Thinking Skills Through Problem Based Learning on Introduction to Cell Material for Grade VIII SMP Sriwedari Malang Septiana Marnik Berke; Nugroho Aji Prasetiyo; Yuswa Istikomayanti
BIO-EDU: Jurnal Pendidikan Biologi Vol. 11 No. 2 (2026): BIOEDU: Jurnal Pendidikan Biologi - August 2026
Publisher : Jurusan Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jbe.v11i2.11121

Abstract

This study was motivated by the still-low level of students' reflective thinking skills in science learning, particularly in understanding their learning experiences, connecting prior knowledge with new information, and reflecting on the learning process. Problem-based learning (PBL) was chosen because it provides students with opportunities to actively engage in problem-solving, discussion, and reflection on their learning. This study aims to analyze the reflective thinking skills of eighth-grade students at Sriwedari Junior High School in Malang through the application of the problem-based learning model to the topic of cell introduction. The study employed a qualitative approach using the case study method. The research subjects consisted of seven eighth-grade students at Sriwedari Junior High School in Malang. Data were collected through observation, student reflection sheets, and documentation. Data analysis was conducted using the miles and huberman model, which includes data reduction, data presentation, and drawing conclusions. The results of the study indicate that students' reflective thinking skills developed gradually during the implementation of PBL. The “reacting” indicator emerged most prominently because students were able to respond to learning experiences and connect them to their prior knowledge. The “comparing” indicator was developed through discussion and inquiry activities that allowed students to compare new information with their previous learning experiences. Meanwhile, the “contemplating” indicator began to emerge through presentation and reflection activities, although it still showed lower achievement compared to the other indicators. The implementation of PBL provided students with opportunities to develop reflective thinking skills through problem-solving activities, group discussions, presentations, and learning reflections.
Effectiveness of Ethanolic Extract of Mangrove Root Bark (Avicennia marina (Forssk) Vierh) as a Biolarvicide against Dengue Hemorrhagic Fever Mosquito Larvae (Aedes aegypti L.) Hana Fadilah; Endah Setyaningrum; Enur Azizah; Emantis Rosa
BIO-EDU: Jurnal Pendidikan Biologi Vol. 11 No. 2 (2026): BIOEDU: Jurnal Pendidikan Biologi - August 2026
Publisher : Jurusan Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jbe.v11i2.11123

Abstract

The Aedes aegypti L. Mosquito is the primary vector causing Dengue Hemorrhagic Fever (DHF), with cases surging during the rainy season due to stagnant water serving as breeding sites. Although synthetic larvicides are effective, they pose potential negative impacts on health and the environment, necessitating safer alternatives such as the biolarvicide from the ethanol extract of Avicennia marina root bark. This study aimed to identify the secondary metabolites in A. marina root bark, determine the effectiveness of its ethanol extract against Ae. aegypti larvae, and observe its effects on the morphological changes of Ae. aegypti. This experimental study utilized five treatments (10%, 12%, 14%, positive control, and negative control) with four replications, each containing 20 third-instar Ae. aegypti larvae treated with the ethanol extract of A. marina root bark. Observations were conducted at 6, 12, 24, 48, and 72 hours post-treatmen. Data were analyzed using probit analysis to calculate the Lethal Concentration₅₀ (LC₅₀) and Lethal Time₅₀ (LT₅₀) values. The results showed that the ethanol extract of A. marina root bark contains secondary metabolites, including alkaloids, flavonoids, phenolics, tannins, and terpenoids. The extract was effective at a 14% concentration, yielding an LC₅₀ value of 13.949% and an LT₅₀ value of 75.133 hours. Furthermore, the ethanol extract of A. marina root bark caused morphological damage to the larval head, thorax, abdomen, and siphon, as well as a decrease in larval motility.
The Effect of the Project-Based Learning Model on the Creative Thinking Skills of Students at Darma Patra Private High School Indriaty; Widya Aprilia Hasibuan; Raja Novi Ariska
BIO-EDU: Jurnal Pendidikan Biologi Vol. 11 No. 2 (2026): BIOEDU: Jurnal Pendidikan Biologi - August 2026
Publisher : Jurusan Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Timor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32938/jbe.v11i2.11138

Abstract

This study aimed to analyze the effect of the Project-Based Learning (PjBL) model on the creative thinking skills of Grade XI students at SMA S Dharma Patra Pangkalan Brandan on the topic of the human excretory system. The study employed a quasi-experimental method with a non-equivalent control group design. The population consisted of all Grade XI students, totaling 171 students. The sample comprised two classes, namely XI A as the control class with 33 students and XI B as the experimental class with 35 students. Data were collected using a creative thinking skills test administered before and after the treatment. The data were analyzed using descriptive and inferential statistics, including normality, homogeneity, and independent-samples t-tests. The results showed that the mean pretest scores of the control and experimental classes were 58.48 and 58.34, respectively. After the treatment, the mean posttest scores increased to 62.82 in the control class and 79.43 in the experimental class. The experimental class showed an increase of 21.09 points, whereas the control class increased by 4.34 points. The hypothesis test yielded tcount = 26.11, which was greater than ttable = 1.997 at α = 0.05. Therefore, H0 was rejected and Ha was accepted. The findings reveal that the implementation of Project-Based Learning significantly enhanced the creative thinking skills of Grade XI students in learning about the human excretory system

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