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Bioscientist : Jurnal Ilmiah Biologi
Published by Universitas Pendidikan Mandalika
ISSN : 23385006     EISSN : 26544571     DOI : https://doi.org/10.33394
Core Subject : Science, Education, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Social Sciences
Bioscientist : Jurnal Ilmiah Biologi (BJIB), receiving and publishing article in the form of research (scientific article) in the field of biology education and utilization of biological research in learning. Moreover, this journal bridges the gap between research and practice, providing information, ideas and opinion, in addition to critical examinations of biology research and teaching. Through the coverage of policy and curriculum developments, the latest results of research into the teaching, learning and assessment of biology are brought to the fore. Special emphasize are as follow: 1. Research on Learning Biology (Biology Learning Materials at All Education Levels). 2. Pure Research of Biology Developed or Studied to the Sources, Materials, or Instructional Media Biology (Biology Learning Materials at All Education Levels and Application in Society). 3. Curriculum of Biology Education at all Education Levels. 4. Class Action Research (CAR) and Lesson Study in Biology. 5. Other Qualitative Research of Biology Education. 6. The School Management and Biology/Science Laboratory Management. 7. Biology Learning Evaluation. 8. Teacher Professional Issues/Trends in Biology Education. 9. Another Study for the Scope of Biology Education. 10. Research on Environmental Education.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 115 Documents
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Search results for , issue "Vol. 12 No. 2 (2024): December" : 115 Documents clear
Isolation and Identification of Bacteria Producing Antibiotic Compounds from The Rhizosphere of Avicennia Marina Against Pathogenic Bacteria in The Mangrove Ecosystem Area of West Kalimantan Khairillah, Yuyun Nisaul; Alang, Hasria; Haryanto, Haryanto; Fitriagustiani, Fitriagustiani; Erwhani, Indri; Purnamawati, Ditha Astuti; Rahmawati, Annisa; Surtikanti, Surtikanti; Triwahyuni, Adelia
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i2.12527

Abstract

Antibiotic resistance is a global problem in the health sector. The level of antibiotic resistance that occurs can be caused by several influencing factors, including 6 isolates of rhizosphere bacteria that were successfully isolated from the rhizosphere of the Avicenia marina plant. The purpose of this study was to isolate and determine the best minimum inhibitory concentration of rhizosphere bacteria of the A. marina plant and its effectiveness in inhibiting pathogenic bacteria S. aureus. This study is a quantitative research method using the isolation and characterization of rhizosphere bacteria, antagonistic test of rhizosphere bacteria and test of the results of the extraction of filtrate of rhizosphere bacteria culture of A. marina plants. The results of this study were (1) five of the isolates of bacteria that were successfully isolated were included in the Bacilus type and 1 isolate of bacteria included in the Cocobasil type; (2) there were 3 of the 6 isolates that could inhibit the growth of pathogenic bacteria S. aureus with an inhibition range of 10.04-4.42 mm; (3) Rhizosphere bacterial isolate (TN 1) is an isolate with the best inhibition diameter and is categorized as strong, namely 10.04 mm; (4) ethyl acetate extract of Rhizosphere bacterial isolate culture filtrate (TN 1), has a minimum inhibitory concentration of 0.50% against pathogenic bacteria S.aureus with an inhibition diameter of 7.18 mm which is better when compared to the positive control using chloramphenicol.
Wave Height Characteristics Due to The Influence of Land and Sea Breezes on Fishermen’s Activities in The Coastal Area of Makassar City Using Doppler Weather Radar Pertiwi, Dini Afiaty; Asbar, Asbar; Jamal, Muhammad
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i2.12545

Abstract

Makassar City, located on the southwest coast of Sulawesi Island, exhibits dominant land and sea breeze circulation, with sea breezes being stronger during the day and land breezes at night. The use of weather radar is effective in identifying these wind characteristics, which are crucial for fishing activities and renewable energy. This study investigates the characteristics of land and sea breezes and their relation to wave heights in the Spermonde Waters of Makassar during the east and west seasons, providing important information for maritime activities in Makassar City. The research area is located between 4°59’20”S 119°27’46”E and 5°11’26”S 119°22’54”E. This study uses weather observation data, including weather radar data, weather observations, and wave heights from January 2020 to December 2020, divided into three seasonal periods (rainy season, transition period, and dry season). The weather observation data were obtained from Hasanuddin Makassar Meteorological Station and Paotere Makassar Maritime Meteorological Station. Additionally, questionnaires were distributed to fishermen at three locations: PPI Paotere Makassar, PPI Untia Makassar, and Kuri Caddi-Maros Beach Fishermen Village, with 15 respondents at each location. The study shows that land breezes in Makassar are dominant from 18:05 to 19:00 LT with a duration of 9.1 to 11 hours, while sea breezes dominate from 08:00 to 09:00 LT with a duration of 5.1 to 7 hours. This phenomenon is most frequently detected during the dry season (JJA). Land and sea breezes can intrude up to 20.1 to 30 km from the coastline. There is a highly significant positive correlation between wind and wave height in January and August, indicating a strong influence of winds on waves in the Spermonde Waters of Makassar. About 80% of fishermen utilize these wind conditions for fishing activities. Overall, the land and sea breeze patterns significantly impact wave heights and the activities of fishermen in the coastal areas of Makassar.
The Relationship Between Early Marriage and Parenting Styles for Children Aged 3-5 Years Yastutik, Baiq Wiwik; Sulaiman, Lalu; Khalik, Lalu Abdul
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i2.12571

Abstract

This study aims to investigates the link between early marriage and parenting styles among parents of children aged 3-5 years in Awang Village, Central Lombok, Indonesia. This study employs an observational analytic design with a cross-sectional approach. Data were gathered from 42 mothers who married before the age of 20. The research instrument is a questionnaire to collect information about socio-demographic and parenting style information, categorized as democratic, authoritarian, and permissive. Data analysis was conducted in two stages: univariate and bivariate analysis. The results of this study are that (1) a significant association between early marriage and authoritarian parenting styles, with 55% of mothers who married at or below 15 years old displaying authoritarian behavior, and 80% exhibiting permissive tendencies, (2) democratic parenting was exclusive to mothers who married at 16 years or older. Higher education levels were linked to democratic parenting, (3) a significant relationship between early marriage and authoritarian parenting, proven by statistical analysis using Fisher’s Exact Test (p = 0.001). The results suggest that early marriage leads to less supportive and more controlling parenting practices, negatively impacting child development. Thus, addressing socio-economic factors and improving educational opportunities are vital to mitigating the adverse effects of early marriage on parenting styles and child development.
Pengembangan Lembar Kerja Peserta Didik Pada Materi Virus Untuk Kelas X SMA/MA Santi, Amelia; Nerita, Siska; Zural, Mimin Mardhiah
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i2.12579

Abstract

The use of appropriate teaching materials is a very important factor in improving students' ability to understand a lesson. However, there are still lessons that use LKPD which only contain a collection of questions, so they are not able to increase student activity in learning activities. Therefore, teaching materials such as LKPD are needed that can meet students' needs. The aim of this research is to create an LKPD accompanied by practice questions on Class X SMA/MA virus material that is valid and practical. This type of research is research and development with a 4D development model. At the development stage, validation is carried out by validators and questionnaires regarding readability and practicality are given to teachers and students. The research instruments used were validity questionnaires, readability questionnaires and practicality questionnaires. The results of the study showed that the resulting LKPD has very valid criteria with a validity score of 95.66%, very readable with a readability score of 96.69% and very practical with practicality scores obtained from teachers and students of 90.19% and 94, respectively. 47%. Thus it can be concluded that the LKPD developed can be used in learning.
Penghambatan Xantin Oksidase Oleh Gel Ekstrak Takokak (Solanum torvum Swartz) Berbasis Nanoteknologi Secara In Vitro Dwiyansyah, Muhammad Imam; Insyira, Rania; Mirsa, Almira Maurilla; Sawalia, Azzara Gita; Nugra, Daffa; Salmi, Salmi
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i2.12610

Abstract

Inhibition of xanthine oxidase is one of the strategies in handling gout. This study aims to explore the potential of takokak fruit extract (Solanum torvum Swartz) in inhibiting nanotechnology-based xanthine oxidase in the form of nanoemulgel. This research is an experimental study conducted in several stages, namely qualitative phytochemical tests, quantitative identification of total flavonoid content and preparation of nanoemulgel made with 3.75% extract with variations of surfactant Tween 80 and PEG 400, namely F1 (30:30), F2 (35:25) and F3 (40:20). The ability of the extract and nanoemulgel was evaluated in inhibiting xanthine oxidase. The results showed that the ethanol extract of takokak fruit contained flavonoids, saponins, phenolics and tannins qualitatively. The total flavonoid content in the extract was 4.472 ± 0.133 mgQE. Formulation F2 has the smallest particle size (18.5 nm) and polydispersity index of 0.1313. Takokak fruit extract has almost the same inhibitory power as allupurinol with an IC50 value of 45.54 ppm. The IC50 value of nanoemulgel 3.75% takokak extract is 29.26 ppm so that the IC50 of the extract in nanoemulgel form is 1.10 ppm (45 times the IC50 of the crude extract). In conclusion, Formula F2 is the best formula in the preparation of nanoemulgel with particle size and polydispersion index and strong xanthin oxidase inhibitory activity.
Efektivitas Fotokatalis Arang Untuk Mendegradasi COD, BOD, dan TSS Pada Limbah Tahu Buka, Oktosea; Nurhaedah, Nurhaedah; Kurnia, Kurnia
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i2.12676

Abstract

The presence of tofu waste compounds in water results in pollution that can contaminate biota. A more effective, efficient, easy and cheap organic waste processing technique for the tofu industry is using the photocatalyst method. Photocatalysis is a combination reaction between photochemistry and catalyst with shell charcoal as a catalyst. This research aims to determine the levels of COD, BOD, and TSS in tofu waste before and after photocatalysis, and to determine the effectiveness of charcoal photocatalysis to degrade tofu waste. In the SEM (Scanning Electrone Mycroscope) test results, it was identified that charcoal has a fairly large and loose pore surface. The test results for the water content were 2.4% and the ash content was 11.45% and the ash content did not meet the charcoal quality standards according to SNI 01-1682-1996, the water content was 6% and the ash content was 3%. The FTIR absorption test results that appear indicate the presence of the O-H group, the C-H Streching functional group, the C ≡ N Nitrile functional group (strong), the C=C aromatic ring functional group which is a form of hexagonal charcoal, the C-O functional group and the presence of the C-H aromatic ring functional group. Test results before and after photocatalysis on Tofu waste for COD levels of 122mg/l and >>> mg/l, BOD 3567 mg/l and 2071mg/l, TSS 138 mg/l and 18 mg/l. The effectiveness of charcoal photocatalysis to degrade tofu waste was effectively used for BOD test parameters with a reduction percentage of 41.9%, TSS of 86.9% and for COD test parameters it was not effective for the photocatalyst method.
Pengembangan Lembar Kerja Peserta Didik Elektronik Interaktif Berbasis Discovery Learning Pada Materi Sistem Sirkulasi Fase F SMA/MA Kurniawati, Dwi Indah; Nerita, Siska; Maizeli, Annika
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i2.12747

Abstract

Penelitian ini bertujuan untuk menghasilkan Lembar Kerja Peserta Didik (LKPD) elektronik interaktif berbasis discovery learning pada materi sistem sirkulasi untuk siswa Fase F SMA/MA yang valid dan praktis, guna memperbaiki kekurangan dalam LKPD cetak dan memanfaatkan media pembelajaran elektronik. Studi ini merupakan penelitian pengembangan yang menggunakan model 4D, yang mencakup empat tahap yaitu define (pendefinisian), design (perancangan), develop (pengembangan), dan disseminate (penyebaran). Pada penelitian ini, tahap penyebaran tidak dilakukan. Instrumen penelitian terdiri dari angket validitas digunakan untuk uji validitas yang dilakukan oleh tiga dosen, sedangkan uji praktikalitas dilakukan oleh 1 guru biologi dan 35 siswa di SMAN 16 Padang. Analisis dapat menggunakan statistik deskriptif dengan teknik persentase. Hasil penelitian menunjukkan bahwa (1) data uji validitas oleh dosen memiliki nilai sebesar 83,15% (sangat valid), (2) data uji praktikalitas oleh guru memperoleh nilai sebesar 81,33% (sangat praktis), (3) data uji praktikalitas oleh peserta didik menghasilkan nilai 89,11% (sangat praktis). Dengan demikian dapat disimpulkan bahwa lembar kerja peserta didik elektronik interaktif berbasis discovery learning pada materi sistem sirkulasi untuk Fase F SMA/MA dinilai valid dan praktis.
The Relationship Between Parenting Styles and Adolescent Sexual Behavior Setiani, Ermy; Sulaiman, Lalu; Sismulyanto, Sismulyanto
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i2.12778

Abstract

This study aims to investigates the correlation between parenting styles and adolescent sexual behavior at SMA Negeri 3 Mataram using an observational analytic design with a cross-sectional approach. Data were collected from 69 11th-grade social science students via a questionnaire assessing parenting styles and sexual behavior. Results indicated that (1) 59.4% of respondents experienced permissive parenting, while 40.6% encountered democratic parenting; (2) respondents who have permissive parenting, 5.8% demonstrated negative sexual behavior, in contrast to the uniformly positive behavior observed in adolescents with democratic parenting; (3) the results of Fisher's exact test are a significance value of 0.141, indicating no statistically significant relationship between parenting styles and adolescent sexual behavior; (4) trend suggests that democratic parenting, which balances freedom and control, is associated with positive adolescent sexual behavior. Thus, these findings highlight the importance of promoting democratic parenting and comprehensive sexual education to reduce risky behaviors. Recognizing cultural nuances and enhancing parental involvement are essential for effective adolescent sexual health prevention strategies.
Analisis Uji Multikolinearitas Variabel Lingkungan Hutan Bakongan-Bengkung, Kawasan Ekosistem Leuser: Implikasi Terhadap Habitat Spesies Kunci Ananda, Ilham; Dahlan, Dahlan; Dharma, Wira
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i2.12797

Abstract

This study aims to analyze the multicollinearity of environmental variables in the Bakongan-Bengkung Forest, part of the Leuser Ecosystem, to understand its implications for the habitat of key species such as Sumatran elephants, Sumatran rhinoceros, Sumatran tigers, and Sumatran orangutans. The research was conducted in August 2023 across an area of 75.912,46 hectares spanning three districts in Aceh. The data utilized includes elevation, slope, river density estimation, Normalized Difference Vegetation Index (NDVI), distance from roads, and annual rainfall, sourced from various geospatial datasets. Data processing was performed using ArcGIS 10.3, Google Earth Engine (GEE), and RStudio 4.2.2. Multicollinearity testing was carried out using Pearson correlation coefficients to identify relationships between environmental variables. The analysis revealed a significant positive correlation between elevation and annual rainfall, with a correlation coefficient of 0,724, indicating a strong linear relationship. This correlation suggests that higher elevations in the area are associated with increased rainfall, likely due to orographic effects. These findings are crucial for conservation planning and habitat management for wildlife. The correlation between elevation and annual rainfall should be considered when developing accurate habitat models for key species in the Bakongan-Bengkung Forest, to ensure effective and sustainable conservation strategies.
Habitat Potensial Satwa Mangsa Harimau Sumatera (Panthera tigris sumatrae) di Terangun - Beutong Kawasan Ekosistem Leuser Fazlurrahman, Ridha; Dharma, Wira; Wobisono, Hariyo T.
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 2 (2024): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i2.12799

Abstract

PThe Sumatran tiger is an apex predator that has an important role as a controller of ecosystem balance. Tigers are highly adaptive wildlife, so they can be found in various habitat types, ranging from tropical forests, swamps, mangroves, to grasslands in the Himalayan foothills. This study aims to determine the habitat conditions of Sumatran tiger prey animals in Terangun - Beutong as an alternative to one of the Sumatran tiger release locations. Data collection was carried out for 1 year in July 2022-2023. The data used in this study are data on the presence of tigers and prey animals at the research location. The equipment used for Sumatran tiger data collection are maps of the study area, Global Positioning System/GPS, manual compass, karmantel rope, data tabulation sheet/tallysheet, stationery, surveillance cameras, digital cameras for documentation, mattresses, sleeping bags, hammocks, tents, cooking utensils, field clothes, raincoats, and carrier bags. Data analysis was conducted using ArcGIS 10.3 software, by selecting spatial analysis work. The research results of this research modeling show that the Terangun - Beutong area is one of the areas that has potential habitat for Sumatran tigers.

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