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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 1,428 Documents
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Penerapan LKPD Berbasis Inquiry Lesson untuk Meningkatkan Kemampuan Literasi Sains Peserta Didik pada Materi Sistem Pencernaan Manusia Rina Oktaviana; Eni Nuraeni; Amprasto Amprasto
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 1 (2023): June
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.v11i1.7435

Abstract

This study aims to analyze the increase in scientific literacy skills through the implementation of Inquiry Lesson-based worksheets on the material of the human digestive system. The research method used was quasi-experimental with a non-randomized control group pre-test and post-test research design. Participants were taken from two classes from class XI MIPA, with the cluster random sampling technique two classes XI MIPA were randomly selected with specifications for experimental class 1 and experimental class 2, each consisting of 32 students. The data were obtained using the instrument of scientific literacy questions in the PISA framework, totaling 10 in the form of valid and reliable multiple choice questions. The results showed that there was a significant difference as evidenced by the results of hypothesis testing with Sig. (2 tailed) = 0.000 <0.05, then ???????? is rejected and ???????? is accepted. There is a difference in the t-count of the experimental class 1 and the t-count of the experimental class 2 where the t-count of the experimental class 2 is 53.82 > 21.997, so it can be concluded that the scientific literacy skills of the experimental class using inquiry-based LKPD have increased scientific literacy skills higher.
Inventarisasi Lichen Crustose Epifit pada Tanaman Teh di Kecamatan Ngargoyoso Kabupaten Karanganyar Fitri Izzatu Roniyah; Efri Roziaty
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 1 (2023): June
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.v11i1.7889

Abstract

Lichens or lichens are organisms that are the result of a symbiotic relationship between algae (photobionts) and fungi (mycobionts). Because it is very sensitive to pollution, epiphytic lichen is often used as a bioindicator of air pollution in a location. This study aims to determine the types of epiphytic crustose lichen on tea plants in Ngargoyoso District, Karanganyar, Central Java. This study used a population of lichens in the Kemuning Ngargoyoso Tea Plantation, Karanganyar. The sample used was epiphytic crustose lichen at the Kemuning Ngargoyoso Tea Plantation, Karanganyar, and the sampling technique was purposive sampling. In determining the location is divided into 3 stations. Station 1 (900 m asl), station 2 (1,000 m asl), and station 3 (1,100 m asl). Lichen distribution is affected by altitude, therefore more and more lichen colonies are found at higher altitudes. The parameters used in this study were crustose lichen, crustose lichen morphology and crustose lichen habitat. This type of research is descriptive exploratory. The research data obtained were analyzed descriptively qualitatively by presenting them in the form of tables and figures.
Studi Penggunaan Safranin dan Kolkisin dalam Pengamatan Kromosom pada Sel Akar Bawang Bombay (Allium cepa Var) Noval Febriadi; Nofisulastri Nofisulastri; Akhmad Sukri
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 1 (2023): June
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.v11i1.7255

Abstract

Based on the results of initial observations it was found that the use of safranin and colchicine showed less than optimal results. The purpose of this study was to observe the phases of mitotic division seen in the use of safranin and colchicine in onion (Allium cepa Var) root cells. The stages of the research included the stages of making preparations, namely root growth, root cutting, fixation, maceration, staining, and squashing. and continued with the observation of the phase of mitotic division which appeared microscopically. The data obtained were from the results of observing the cleavage phase in the chromosomes of the onion root cells, then analyzed descriptively and then comparatively to show what cleavage phases were due to safranin and colchicine staining with different soaking times. Based on the observed cell division phase of onion (Allium cepa Var) roots, safranin was more effective than colchicine with 30 minutes of soaking time.
Komposisi dan Struktur Strata Sapling di Kawasan Geopark Silokek Kabupaten Sijunjung Savira Geovana; Chairul Chairul
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 1 (2023): June
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.v11i1.7628

Abstract

This study aims to determine the composition and structure of the sapling strata of plants in the Silokek Geopark Area, Sijunjung Regency. Vegetation analysis was carried out using the transect method with a plot size of 5 x 5 m. 10 plots were made and the identification of unknown plant species was carried out at the Andalas University Herbarium. Based on the research results found 31 species consisting of 48 individuals with 14 families. The co-dominant families are Euphorbiaceae, Annonaceae, Leguminosae, and Sapindaceae. The highest important value index is Archidendron bubalinum. The diversity index of the sapling strata vegetation in this area is high (H' = 3.28). Based on the research, it can be concluded that the Euphorbiaceae, Annonaceae, Leguminosae, and Sapindaceae families support the composition and structure of the vegetation in the area.
Respon Pertumbuhan Pakcoy (Brassica chinensis L.) terhadap Pemberian POC Limbah Baglog Jamur dan Kulit Semangka Yassar Rahma Istikomah; Suparti Suparti
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 1 (2023): June
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.v11i1.8218

Abstract

Pakcoy (Brassica chinensis L.) is a vegetable from the Brassicaceae family. Pakcoy is a short-lived plant. Pakcoy contains fat, protein, Fe, Ca, P, Vitamins A, B, C, E, and K, with that pakcoy is very good for health and has prospects for high economic value. The first factor affecting the decline in pakcoy production is soil fertility. The continuous use of land with chemical fertilizers results in a decrease in biological, chemical and physical soil fertility, one of the efforts to overcome this problem is to improve cultivation techniques through fertilization. This study aims to determine the growth response of the pakcoy plant by administering liquid organic fertilizer from mushroom baglog waste and watermelon rinds. This study used a factorial complete randomized design with 2 factors, namely the interval of watering of liquid organic fertilizer and the volume of organic fertilizer dilution concentration and used quantitative descriptive analysis with the Two Way ANOVA test. The purpose of this study was to determine the growth response of the pakcoy plant to the application of liquid organic fertilizer from mushroom baglog waste and watermelon rinds. The results of this study indicated that the TIV3 treatment (watering interval once every 3 days with a volume of 30% dilution concentration) gave a response to plant height with an average of 18.05 cm, number of leaves with an average of 6 leaves, and an average fresh weight of 11.50 g.
Uji Aktivitas Antibakteri Virgin Coconut Oil (VCO) terhadap Pertumbuhan Bakteri Staphylococcus aureus Niken Niken; Rahmi Novita Yusuf; Yanti Rahayu; Ibrahim Ibrahim
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 1 (2023): June
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.v11i1.7244

Abstract

Infectious disease is a disease that is generally caused by infection with pathogenic microorganisms. Staphylococcus aureus is a bacterium that causes the most common infectious disease. S. aureus infects tissues or organs and can cause disease which has characteristic signs of inflammation, necrosis, and abscess formation. Generally treat this Staphylococcus aureus bacterial infection by administering antibiotics. Long-term administration of antibiotics can cause negative effects on the body. One of the efforts to control S. aureus bacterial infection is by using herbal ingredients. VCO contains medium chain saturated fatty acids (Medium Chain Fatty Acid). Medium Chain Fatty Acid, namely lauric acid which can be broken down into monolaurin which has antibacterial properties. This study aims to determine whether VCO can inhibit the growth of S. aureus bacteria. This research is a laboratory experiment using the paper disc diffusion method (Kirby-Bauer). The sample used is Staphylococcus aureus bacteria. The concentrations used in this study were 20%, 40%, 60%, 80%, 100% and amoxicillin positive control and DMSO negative control. Data analysis was performed statistically with the One-Way Analysis of Variance (ANOVA) test. Data is normally distributed and homogeneous. The results showed that the antibacterial activity of VCO was shown to have inhibition against S. aureus bacteria with an average concentration of 20% with a diameter of 14.4 mm (strong), 40% diameter 14.5 mm (strong), 60% diameter 14.6 mm (strong), 80% diameter 14.6 mm (strong), 100% diameter 16.0 mm (strong), positive control amoxicillin 7.9 mm and negative control 0 mm. The results of the ANOVA test showed a value of p = 0.000 (sig. < 0.05) that there was a significant difference between all treatments with a positive control. It can be concluded that VCO was effective in inhibiting the growth of S. aureus bacteria, this was because the diameter of the VCO inhibition zone was larger than the positive control.
Komposisi, Dominansi, dan Pemanfaatan Gulma Agroforestri Jambu Mete (Anacardium occidentale L.) di Desa Gemawang Kecamatan Ngadirojo Kabupaten Wonogiri Asri Khoirunisa; Santhyami Santhyami
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 1 (2023): June
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.v11i1.7666

Abstract

Gemawang Village, Ngadirojo District, Wonogiri Regency, Central Java Province is home to one of the cashew (Anacardium occidentale L.)-based agroforestry operations. In agroforestry management, plants are one of the factors that can impede cashew production growth. To determine the success of weed control, it is necessary to first acquire an understanding of weed species. There were 2 stations in this study, namely cashew-based agroforestry ecosystem stations and teak monoculture ecosystems.This study assessed the composition, dominance, and prospective use of weed vegetation in cashew-based agroforestry areas. The point-intercept method and exploration of weed vegetation varieties in agroforestry station constitute the research methodology. As a comparison station, this study was also conducted on teak monocultures that are commonly found at research sites.The quadratic form measuring 1 m x 1 m with 100 grids of 12 plots at each station was utilised to collect weed samples. Composition and dominance of species in agroforestry and monoculture were found to be distinct. 24 species from 12 families are used in agroforestry, while 12 species from 7 families are used in monoculture. The dominant invasive species in agroforestry is Ageratum conyzoides L. (34.39%), while in monoculture it is Synedrella nodiflora Gaertn (37.78%). The weed vegetation diversity index value in agroforestry and monoculture was 1.90 and 1.51,respectively, which is considered moderate. In contrast, the value of the Sorensen uniformity index, which was 36.84%, was considered to be low. Up to 26 species of vegetation have the potential to contribute to human survival.
Morfometrik Ikan Cere (Gambusia affinis) dan Ikan Putian (Rasbora argyrotaeni) yang Terpapar Merkuri di Sungai Tambang Saweak Kabupaten Lebong Deka Agustina; Euis Nursa’adah; Aceng Ruyani
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 1 (2023): June
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.v11i1.7675

Abstract

Mercury (Hg) is a pollutant that is dangerous because it is toxic when it accumulates in living tissue and is difficult to decompose in the environment, if it is polluted it will be very dangerous for the environment and living things around it. In this study the aim was to determine the mercury content of the morphometrics of fish in the Selikat River, Tambang Saweak Village. Based on the results of the study, it was found that 2 species of fish were exposed to mercury and not exposed, namely Cere fish (Gambusia affinis) exposed to mercury of 0.47 mg/Kg and Putian fish (Rasbora argyrotaenia) exposed to mercury of 0.43 mg/Kg. Where in the two fish there are morphometric differences, namely differences in body height (TB), tail stem height (TBE), dorsal fin length (PDO) and anal fin length (PA). This happens because fish that are exposed to toxic compounds or heavy metals such as mercury (Hg) can experience tissue damage and affect the body size and body shape of the fish. If fish exposed to mercury are eaten by humans, it will have consequences for human health such as poisoning and can cause ataxia, decreased speech and hearing ability, tremors, dysarthria and ultimately death.
Formulasi Obat Kumur Minyak Atsiri Sereh Wangi (Cymbopogon nardus (L.) Rendle) dan Uji Aktivitas Antibakteri terhadap Streptococcus mutans Marisa Tamara Sari; Yelfi Anwar; Andrianopsyah Mas Jaya Putra
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 1 (2023): June
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.v11i1.8308

Abstract

Mouthwash is a liquid, aqueous composition that is primarily used to treat oral conditions, as well as maintain oral health. The purpose of this study was to prove the antibacterial efficacy of citronella essential oil against Streptococcus mutans bacteria made in mouthwash formulations. Citronella essential oil was analyzed using GC-MS and then formulated into a mouthwash with concentrations of 1.5%, 3% and 4.5% at cold temperatures (2-8°C) and room temperature (20-25°C).The test results were evaluated, and analyzed using One Way ANOVA and Post Hoc Tukey. The GC-MS results showed that 3 main compounds were detected, namely Citronellol (11.69%), Geraniol (15.59%), and Citronellal (24.57%). The mouthwash formulation did not show any organoleptic change in physical preparation, was homogeneous, had a pH range of 4.91-5.18 at cold temperature and pH 5.02-5.23 at room temperature, had a viscosity consistency that met the standard of 0.8 -1 at cold temperature and room temperature, and no separation was found, such as the presence of precipitate in each treatment. Formula 3 is considered to have medium inhibition compared to formulas 1 and 2 with an average inhibition power at cold temperature formula 6.73 while at room temperature formula 7.35. Briefly, the formulation is stable both at cold temperature (2-8°C) and room temperature (20-25°C) with moderate inhibition at a concentration of 4.5%.
Antimicrobial Activity Test of Medicinal Plant Extract Using Antimicrobial Disc and Filter Paper Muhammad Taufiq Hidayat; Maharani Pertiwi Koentjoro; Endry Nugroho Prasetyo
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 1 (2023): June
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.v11i1.7544

Abstract

Plant extracts contain secondary metabolites such as flavonoids and phenolic compounds with antibiotic activity. Antibiotic activity test can be done by using the Kirby-Bauer disc method which the antibiotic activity is indicated by the formation of a clear zone. This research was conducted using extracts of Moringa oleifera leaves and Opuntia cochenillifera cladode extracted using ethyl acetate as a solvent. Antibiotic activity test against Staphylococcus aureus bacteria was done in Mannitol Salt Agar and Luria Bertani Agar media. The Kirby-Bauer discs used are Antimicrobial Disc Oxoid® and Filter Paper. The results of this study show that the use of the Antimicrobial Disc Oxoid® and Filter Paper shows no statistical difference in clear zone results (t-value = 0,45; p-value = 0,655; with α = 95%). While the Clear Zone results on Mannitol Salt Agar gave better results than Luria Bertani Agar and were statistically significant (t-value = 2,46; p-value = 0,02; with α = 95%). These findings indicate that filter paper can be an inexpensive alternative for the antibiotic test with no significantly different result compared to commercial antibiotic disc. However, an antibiotic test against Staphylococcus aureus is better done on Mannitol Salt Agar (MSA) compared to Luria Bertani Agar (LBA).

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