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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 68 Documents
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Search results for , issue "Vol 10, No 2 (2022): December" : 68 Documents clear
Potensi Tepung Biji Kecipir (Psophocarpus tetragonolobus) sebagai Bahan Alternatif Sumber Nitrogen dalam Media Mannitol Salt Agar (MSA) untuk Pertumbuhan Staphylococcus aureus Urip Urip; Nanda Yuniza Pratiwi; Erlin Yustin Tatontos; Maruni Wiwin Diarti
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.6138

Abstract

The purpose of this study was to determine the potential of winged bean (Psophocarpus tetragonolobus) seed powder as an alternative medium for Mannitol Salt Agar (MSA) against the growth of Staphylococcus aureus bacteria. This research method is true experiment with Completely Randomized Design (CRD). The experimental unit of this research was winged bean seed flour and Staphylococcus aureus. Winged bean seed flour used with 5 treatments, namely 2 gr, 4 gr, 6 gr, 8 gr, and 10 gr with each replication 5 times. The results showed that the standard MSA as a control showed an average of 3211 colonies, the average colony at a concentration of 2% was 372 colonies, the average colony on a 4% concentration plate was 419 colonies, the average colony on a 6% concentration plate was 544 colonies, the average colony on an 8% concentration plate were 622 colonies, and the average colony on a 10% concentration plate was 816 colonies. The conclusion of this study is winged bean seed powder has the potential as an alternative source of nitrogen in Mannitol Salt Agar (MSA) media for the growth of Staphylococcus aureus.
Keanekaragaman Capung (Odonata) di Kawasan Gunung Api Purba Nglanggeran Kabupaten Gunungkidul Mega Setyawati; Triatmanto Triatmanto
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.5872

Abstract

This study aims to determine the types of dragonflies and the level of diversity of dragonfly species in the Nglanggeran Ancient Volcano Area, Patuk Kapanewon, Gunungkidul Regency. This research is a descriptive observational study, with accidental sampling technique. The research was conducted in March-May 2021 in the Nglanggeran Ancient Volcano Area, Patuk Kapanewon, Gunungkidul Regency. Observations were made at 08.00-16.00 WITA. The results found 11 species of dragonflies, from the Aeshnidae family 1 species (Gynacantha subinterrupta), 9 species from the Libellulidae family (Agrionoptera insignis, Diplacodes trivialis, Lathrecista asiatica, Neurothemis rambutii, Neurothemis terminata, Orthretrum sabina, Pantala flavescens, Potamarcha congener, and Zyxomma obtusum) , and 1 species from the Platycnemididae family (Copera marginipes). The diversity level of dragonflies in the Nglanggeran Ancient Volcano Region according to the Shanon-Whiener (H') diversity index is in the medium category, with a value of 1.65.
Keragaman Jenis Herpetofauna di Kawasan Hutan Kota Ranggawulung Kota Subang Mhd Muhajir Hasibuan; Aristyo Dwiputro; Siti Rabiatul Fajri; Rizki Kurnia Tohir
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.6460

Abstract

Ranggawulung City Forest is a Green Open Space (RTH) located in Subang City. As one of the remaining forests in the middle of an urban area, this urban forest has great potential as a location for biodiversity management. This research was conducted to determine the value of biodiversity, especially herpetofauna in Ranggawulung City Forest, Subang City as an indicator for evaluating the success of environmental management in the future. This study uses the Visual Encounter Survey (VES) method modified with Time Search. The herpetofauna diversity (H') in general observed in the Ranggawulung City Forest was 2.59 in the HKR block, and 2.34 in the Buper block. The value of species richness (Dmg) in each block is 4.41 and 3.40. The two areas are relatively evenly distributed with an evenness value of more than 80%. There were no nationally protected species of herpetofauna, two of which were species whose trade was restricted internationally and were included in the CITES Appendix II category.
Efektifitas Fermentasi Pupuk Kandang pada Hasil Panen Kentang Hitam (Plectranthus rotundifolius) di Daerah Dataran Rendah Ngadiani Ngadiani; Vivin Andriani
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.6136

Abstract

In order to realize food self-sufficiency, it is necessary to develop food alternatives other than rice, black potato plants are suitable as an alternative to be developed. Black potatoes have a high carbohydrate content, besides that they contain calcium, iron, and phosphorus. This study aims to determine the fermentation treatment of cow, goat, and chicken manure on black potato yields. This study used a factorial RAK (Randomized Block Design) with 3 factors and 3 replications. Factors for giving cow manure (S), goat manure (K), and chicken manure (A), each with 3 levels, namely 5 kg/plot, 10 kg/plot, and 15 kg/plot (S1, S2 , S3, K1, K2, K3, A1, A2, A3), negative control and NPK. The variable observed was yield, including: number of tubers, tuber weight, and black potato tuber diameter. The results showed that there was an effect of fermenting manure on black potato yields for 90 HST. Application of chicken manure with a concentration of 15 kg/plot gave better results in fermenting cow and goat manure. The number of tubers was 62 tubers, the tuber weight was 260 grams, and the tuber diameter was 2.12 mm.
Pengembangan E-Modul Berbasis Problem Based Learning pada Materi Sistem Pernapasan untuk Meningkatkan Hasil Belajar Kognitif Siswa SMP Romawani Waruwu; Nirwana Anas; Rohani Rohani
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.6295

Abstract

The effectiveness of use of printed teaching materials such as student textbooks, such as textbooks, opens up opportunities for integrating a teaching material supplement with the latest information technology to support the achievement of 21st century skills. One of them is the development of an e-module based on Problem Based Learning. This research aims to develop valid, practical, and effective Problem Based Learning e-modules. This research uses research and development methods with the 4D development model (Define, Design, Develop, and Disseminate). The test subjects in this study were class VIII students of SMP Muhammadiyah 17 Pon Village, Sei Bamban District, Serdang Bedagai Regency, North Sumatra Province. The results showed that: 1) the validation results of media experts obtained an average percentage of 77.63% in the valid category. The results of the material expert validation obtained an average percentage of 97.61% with a very valid category. The results of the linguist validation obtained an average percentage of 100% with a very valid category; 2) the results of the teacher's response assessment obtained an average percentage of 81.06% in the very practical category. The results of assessing the responses of students in the small group tryout obtained an average percentage of 87.22% in the very practical category, and in the large group tryout an average percentage of 87.84% was obtained in the very practical category; and 3) product effectiveness test using the N-gain test obtained an average score of 0.59 indicating an increase in cognitive learning outcomes with moderate criteria. Based on the results of testing the validity, practicality and effectiveness of the product, the e-module based on Problem Based Learning on respiratory system material developed is valid, practical and effective for teachers and students to use in the process of learning natural sciences.
Perbandingan Kualitas Kertas Komposit dari Ampas Tebu dan Kertas Koran Berdasarkan Konsentrasi NaOH yang Berbeda Shinta Damayanti; Entin Daningsih; Andi Besse Tenriawaru
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.5424

Abstract

Paper is needed in large quantities so the need for wood as a raw material for paper is getting higher. Composite paper uses non-wood raw materials can be an alternative to make paper. Bagasse can be used as a substitute for wood fiber and reduce waste in the environment to make composite paper. Likewise, newsprint can be used as a mixture of composite paper. This study aims to compare the quality of composite paper from bagasse and newsprint mixtures using different concentrations of NaOH. The method was an experimental completely randomized design (CRD) consisting three treatments of NaOH (4, 6, and 8%) and 10 replications. The parameters measured were paper thickness, grammage, mass density, and tensile resistance, and were using SPSS ANOVA and continued with LSD test. Paper thickness is affected by the amount of cellulose that was degraded as well as paper grammage, paper thickness and grammage have higher values at the lowest concentration of NaOH (4%). Meanwhile, the tensile strength showed long cellulose had not been degraded much and resulted in higher tensile strength. This also resulted in mass density showing the highest density at the highest concentration of NaOH (8%). In conclusion, concentration of 4% NaOH resulted in paper thickness, grammage, and higher tensile strength compared to 6% and 8% NaOH concentrations. However, the highest mass density was influenced by 8% NaOH concentration compared to 6% and 4% NaOH concentrations.
Struktur Komunitas Lichenes di Kawasan Gunung Galunggung Berdasarkan Indeks Ekologi Muhamad Nuralamsyah; Diana Hernawati; Rinaldi Rizal Putra
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.6186

Abstract

Lichenes are a symbiosis between fungi and algae which usually grow on rock surfaces, rotting logs, and trees. This research is to determine the community structure of Lichenes in the Mount Galunggung Region based on ecological indexes. The research method was carried out in a descriptive exploratory survey technique, where the area taken from each station was 300 m. The areas that are the research stations are the Crater Area, Batu Blek Waterfall, and Cipanas Waterfall. The number of Lichenes found consisted of 4 classes, 9 orders, 13 families, 16 genera and 17 species of Lichenes, including station 1 (Crater Area) there were 10 species with the highest number of individuals found in the species Graphis sp. namely 669 individuals (63%). Station 2 (Curug Batu Blek) there are 6 species with the highest number of individuals found in the species Graphis sp. namely 412 individuals (59%). Station 3 (Curug Cipanas) there were 6 species with the highest number of individuals found in the species Cryptothecia striata, amounting to 637 individuals (34%). The average value of the diversity index was 1.20 which included the medium category, the evenness index value was 0.62 which included the high category, the species richness index value was 0.91 which included the low category, the species dominance index value was 0.39 which included the medium category. The environmental parameters include chemical factors (pH) and physical factors (temperature, light intensity, humidity, type of substrate, and altitude).
Respons Pertumbuhan Tanaman Cabai Rawit (Capsicum frutescens L.) terhadap Perlakuan Priming PEG dalam Mengatasi Cekaman Salinitas Salsabila Prasma Aisy; Diah Rachmawati
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.6122

Abstract

Salinity is an abiotic stress that can reduce the productivity of plants such as chili. Chili is a plant that has a low tolerance to salinity. Priming is a method of improving seed quality that can improve seed performance. One type of solution that is often used in priming is PEG (Polyethylene Glycol). This research was conducted to determine the concentration of PEG priming that gave the highest yield, and its effect on the growth of chili plants grown in salinity stress. This study used a factorial randomized block design (RBD), with 2 treatment factors and 6 replications. The first factor was the priming treatment of seeds with PEG 6000 which consisted of 3 levels, including: P0 (control), P1 (12.5% PEG), and P2 (25% PEG). The second factor was the treatment of salinity stress (NaCl) which consisted of 3 levels, namely: N0 (control), N1 (2000 ppm), and N2 (4000 ppm). Data analysis in this study used one-way analysis of variance (One-Way Analysis of Variance) and two-way (Two-Way Analysis of Variance). If the results show a significant effect, it will be continued by testing the difference between the treatment means with Duncan's Multiple Range Test at the 95% confidence level. The results showed that 25% PEG concentration was the concentration that gave the highest yield, and could increase the germination and growth of chili plants, such as: plant height (133.27 cm), number of leaves (327 strands), root fresh weight (48.18 gram), crown fresh weight (161.47 gram), root dry weight (17.63 gram), and shoot dry weight (37.65 gram) grown under conditions of salinity stress.
Efek Pendidikan Kewirausahaan terhadap Sikap Wirausaha Mahasiswa Pendidikan Biologi : Moderasi Self Efficacy Baiq Mirawati; Subagio Subagio
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.6602

Abstract

This study aims to determine the effect of entrepreneurship education with self-efficacy moderation on student entrepreneurial attitudes. This study is a descriptive exploratory study with 35 biology education students as subjects. The research instrument used was a closed questionnaire with degraded attitude answers according to the Likert scale and had been validated by experts. Analysis of the research data used is descriptive statistics and inferential statistics with the Moderate Regression Analysis (MRA) test at a significance level of 5%. The results of the study show that: 1) student perceptions of entrepreneurship education have an average of 3.15 in the good category, self-efficacy is 3.12 in the good category, and entrepreneurial attitude is 3.06 in the good category; 2) there is an effect of entrepreneurship education with self-efficacy moderation on student entrepreneurial attitudes with an F value of 93.109, and a significance value of 0.000 which is less than the alpha testing value of 0.05 (> 0.05); and 3) entrepreneurship education with self-efficacy moderation influences student entrepreneurial attitudes by 73.8%, and the rest is influenced by variables or other factors.
Penapisan Senyawa Bioaktif Antimikroba dari Ekstrak Campuran Daun Inggu (Ruta angustifolia L.) dan Bakteri Endofit Pseudomonas azotoformans UICC B-91 sebagai Sediaan Oral Nutraceutical Mohammad Ananda Reza Kurniawan; Rina Hidayati Pratiwi; Fika Arie Susanti
Bioscientist : Jurnal Ilmiah Biologi Vol 10, No 2 (2022): 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.v10i2.5875

Abstract

The oral cavity as a passageway for various types of substances can be a nesting place for various types of microbes that can cause microbial infections, including candidiasis. Inggu leaf extract and extract of the endophytic bacteria Pseudomonas azotoformans in previous studies have shown the resulting antimicrobial activity. The aim of the study was to screen for antimicrobial bioactive compounds from inggu leaf extract and endophytic bacteria as nutraceutical oral preparations. A mouthwash formulation was made with the addition of crude extract of inggu leaves and pure extract of the endophytic bacteria Pseudomonas azotoformans as antimicrobial agents. The method used is laboratory experimental. The formulation was made by adding the crude extract of inggu leaves and pure extract of the endophytic bacteria Pseudomonas azotoformans and divided into 3 formulations A, B, and C with a ratio of 1:1, 1:2, and 2:1 respectively. The results showed that each mouthwash preparation had an inhibition zone on preparations A, B and C, which were 8.55 mm; 8.55mm; and 9.53mm. The normality test result for each preparation was 0.05. The homogeneity test results obtained a significance value of 0.074 (p > 0.05). The results of the one way ANOVA test found a significance value of 0.000 (p <0.05), there was a significant difference in the variation in the concentration of the mouthwash formula in inhibiting the growth of the Candida albicans fungus. The inhibition zone formed indicated the presence of antimicrobial activity from the mouthwash and all formulas were included in the moderate criteria according to the Davis & Stout method. All preparations are homogeneous because there is no precipitate, have the dominant smell and color of inggu leaves, and have a sweet taste that is slightly mixed with bitter and spicy from inggu leaves.

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