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Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi
Published by Universitas Islam Negeri Sumatera Utara
ISSN : 26213702     EISSN : 26217538     DOI : 10.30821
Core Subject : Education, Agriculture,
Agriculture, Biological Sciences & Forestry Education
Arjuna Subject : -
Articles 140 Documents
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Development of socioscientific issues-based e-module on environmental change topic Diyyan Marneli; Febri Yulia Susanti
Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 5, No 2 (2022): December
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/biolokus.v5i2.2000

Abstract

This research background was the limitation of online learning resource and lack of e-module in learning process especially in using socioscientific issues approach. Moreover, the teaching material was less attractive and comprehensive that causes lack of students learning interest. This study aimed to produce e-module based on socioscientific issues in environmental change topic for senior high school students grade X. The research was conducted in SMAN 1 Padang Ganting in even semester 2021-2022. 4D (define, design, development and diseminate) model used to develop the e-module. This research result was the e-module produced have 83% in validity and categorized as very valid, 88% in practicality based on teacher’s questionnaire and 84% based on student’s questionnaire which categorized very practical. This suggets that e-module developed meet all aspects of a research development and in accordance with the characteristics of a teaching materials. It can be concluded that the socioscientific issues-based e-module developed was valid and practice for biology learning in senior high school.
Reevaluation of methanol extract from Phoenix dactylifera var. sukkari fruit’s potential against acne-inducing bacteria Reza Anindita; Intan Kurnia Putri; Maya Uzia Beandrade; Dede Dwi Nathalia; Melania Perwitasari
Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 5, No 2 (2022): December
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/biolokus.v5i2.1363

Abstract

One of the natural ingredients that is often developed as an antibacterial product is the date palm (Phoenix dactylifera). However, scientific evidence regarding the effectiveness of the antibacterial compounds contained in dates needs to be evaluated, considering that several previous studies have reported that dates are more dominant as antioxidants than as antibacterials. Therefore, it is necessary to reevaluate the antibacterial ability of the methanolic extract of the sukkari variety date palm against the three test bacteria that cause acne, namely P. acnes, S. epidermidis and S. aureus. This research aimed to determine the sensitivity of the three bacteria tested in response to the methanol extract of the sukkari dates. This research design is experimental. The samples tested were sukkari and the tested bacteria were P. acnes, S. epidermidis and S. aureus. Dates were extracted by maceration method and made in concentrations of 50%, 60%, 70%, 80% and 90%. Positive control was chloramphenicol antibiotic while negative control was sterile distilled water. All treatments including control (+) and (-) were given to the test bacteria using the Kirby Baeur method to see the diameter of the zone of inhibition of the test bacteria growth. The data was processed in tabular form and compared with the 2016 CLSI standard to see the sensitivity response of the test bacteria. Results of this research is the sukkari dates extract with concentrations of 50%, 60%, 70%, 80% and 90% was able to inhibit the growth of P. acnes, S. epidermidis and S. aureus bacteria with an interval of 7.0-10.0 mm in diameter of the zone of inhibition. All the tested bacteria showed a sensitivity response in the resistant category, so the sukkari dates fruit extract is not the main choice to be developed as a natural anti-acne product.
Length-weight relationship and condition factors of Channa striata in Tanjung Haloban village, Labuhanbatu Asri Asyhari; Rusdi Machrizal
Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 5, No 2 (2022): December
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/biolokus.v5i2.1316

Abstract

This study aims to determine about length-weight relationship and condition factors of Channa striata in Tanjung Haloban village, Bilah Hilir District, Labuhanbatu Regency. The study was conducted from October to December 2021. Sampling of snakehead fish (C. striata) had done in Tanjung Haloban village. Measurement of the length and weight of snakehead fish (C. striata) was carried out in the ecology laboratory of the Faculty of Teacher Training and Education, Universitas Labuhanbatu. The tools used in this study among others rods, ruler, scales, calipers, buckets. Sampling is carried out for three months with fishing gear. The length-weight relationship can be analyzed using the linear allometric model (LAM) equation. Based on the results of the analysis of the relationship in the length of the snakehead fish weight (C. striata) shows that the results of measuring the length of the snakehead fish weight can be known that male and female snakehead fish have a negative alomatric pattern with a value of b<3, while the condition factor calculated with relative weight (WR) 100.58 and the fulton condition factor (K) 0.85 is close to 1 which means the condition of the swamp waters of the snakehead fish habitat is in a balance state.
Potential of biological agents (Pseudomonas sp.) in plastic waste biodegradation process Aisyah Chofifawati; Robbi Mauizzatul Hikmah; Nilana Izzati; Lathifah Nurul Fauzi; Tara Puri Ducha Rahmani; Arnia Sari Mukaromah
Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 5, No 2 (2022): December
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/biolokus.v5i2.1192

Abstract

Pseudomonas sp. can degrade plastics because it has an inducible operon system that produces certain enzymes (esterase, serine, hydrolase, and lipase) in the process of carbon source metabolism. The purpose of this study was to determine the potential of Pseudomonas sp. as a plastic biodegradation agent. This research method is a systematic literature review which is carried out by collecting, understanding, analyzing and concluding as many as 30 national and international journal articles published from 2008 to 2022 from several search engines such as Google Scholar, Ncbi, Sinta, and Plos one with the keywords degrading microorganisms plastic. The steps of this research were made samples to be used, tested samples with bacterial isolation, filtered the bacteria, bacterial bacteria and biodegradation within a specified time period by looking at the % loss of plastic before treatment. The results of the literature review analysis showed that Pseudomonas sp. able to degrade plastic around 2-19% by utilizing plastic as a carbon source which will convert addition and condensation polymers into simple molecules such as monomers, dimers and oligomers during the inventory period within 1-3 months. Thus, the microorganisms in the form of Pseudomonas sp. can decompose plastic waste naturally and faster than other methods and does not cause adverse effects.
Practicality test of HOTS-based worksheet on evolution topic for high school students Nurhidaya Nurhidaya; Adnan Adnan; Abd. Muis
Jurnal Biolokus Vol 6, No 1 (2023): June
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/biolokus.v6i1.1641

Abstract

Initial studies on the use of high school student’s worksheets based on higher order thinking skills (HOTS) in learning biology showed that HOTS content in the worksheet used by teachers is still low. Based on this, HOTS-based worksheet on evolution material has been developed. The type of research is a development research by using ADDIE model. The practicality test of HOTS-based worksheet was carried out at SMA Negeri 4 Wajo, South Sulawesi in March 2022, with 2 biology teachers and 30 students of grade 12th. The data collected through some instruments such as the observation sheet for the implementation of the worksheet and the questionnaire for students and teacher’s response. The criteria for HOTS-based worksheet are declared practical if the minimum value of the percentage of product implementation obtained is 71.00%, and the average percentage of respondents through questionnaires is ≥70.00%. Generally, product implementation through the observation sheet was 84.46% (very well implemented category); teacher responses to the practicality of the worksheet was 85.83% (very positive response category); and student responses was 85.94% (very positive response category). Refer to the research results, it can be concluded that the worksheet has met the practical criteria.
The implementation of STAD model assissted worksheets to improve students’ activities and understanding in learning biology Sondang Rosita Indah Togatorop; Samuel Benny Dito
Jurnal Biolokus Vol 6, No 1 (2023): June
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/biolokus.v6i1.1368

Abstract

This study aims to apply the Student Teams-Achievement Division (STAD) learning model assisted student worksheet to increase learning activities and understanding of concepts in biology, especially the principle of trait inheritance material. Class action research consisting of two cycles, each cycle consisting of three encounters is used in this research method. Research instruments are in the form of pre-cycle questionnaire sheets, learning outcomes evaluation sheets, student activity observation sheets, and teacher activity observation sheets. Evaluation sheet of learning outcomes to determine the improvement of understanding of concepts in the material of the principle of inheritance of traits. Student and teacher activity sheets are used to view the interactions that occur between teachers and students.  Descriptive statistics are used in the analysis data to see student learning outcomes and increased student activity. The results of the study concluded that the understanding of student concepts and the increase in learning activities. The percentage of learning activities in cycle I and cycle II respectively averaged 50.95% and 81.21%. The percentage of learning outcomes in cycle I and cycle II respectively averaged 64.61% and 84.31%. The percentage of students who completed cycle I and cycle II respectively was 44.44% and 80.56%. So it can be concluded that the learning with STAD model assisted worksheets can improve students’ activities and understanding on the material of the principle of inheritance of traits.
Development of android-based learning media on tool sterilization materials Fauziyah Harahap; Wilhelminari Br Saragih
Jurnal Biolokus Vol 6, No 1 (2023): June
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/biolokus.v6i1.2115

Abstract

According to the analysis of student needs for sterilization material for tissue culture courses, it shows that learning media still has a limited role in the learning process. In terms of material and visualization, the learning media used cannot be explained in detail. Students still don't understand the material and really need Android-based learning media that is more flexible and well visualized. The purpose of this study was to find out the analysis of student needs, the design of instructional media, the level of feasibility of learning media from experts and the responses of lecturers and students as well as evaluations of students. The research method used is R&D, ADDIE Model (Analysis, Design, Development, Implementation, and Evaluation). The results of the study were 96.70% of students needed Android-based learning media, media content designs namely: Instructions for Use, CP-MK, References, Materials, Videos, Exercises, Developer Profiles and EXIT. The feasibility level of the media is categorized as very feasible, the results of material experts are 100%, media experts are 96.5% and learning design experts are 94.5%. then the lecturer response was 83% and the student response was 92.52% included in the very decent category. then the evaluation stage obtained an n-gain score of 0.60 categorized as quite effective. The limitation of the research problem is that the material developed is limited to the topic of tool sterilization for tissue culture courses and the development used is limited to the evaluation stage, namely the media effectiveness testing stage.
Morphological and phenological characteristics of petunia (Petunia hybrida Vilm.) flowering Asri Ferianti Sareh; Pinta Murni; Ervan Johan Wicaksana
Jurnal Biolokus Vol 6, No 1 (2023): June
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/biolokus.v6i1.1968

Abstract

Petunia hybrid Vilm. is an ornamental plant that has the potential to be developed because its flowering period does not know the season and comes with various motifs and flower colors that can add cultivation and commercial value. Information on the morphological characteristics of flowers and flowering phenology is the basis for their development. The aim of this study was to characterize the morphological structure of flowers and observe a series of phases in flower development stages associated with environmental factors. This research was conducted in the sustainable twin housing complex in the city of Jambi on March 25–May 27, 2022, and the data obtained was analyzed descriptively, qualitatively, and quantitatively. The results of flowering phenology observations showed that petunia flower development occurred over an average period of 37 days. Based on the characterization of the morphological structure of the flower, the average length is 72 mm and the diameter is 42 mm. It is categorized as a complete flower because it has a main organ consisting of five petals with an average diameter of 42 mm, five petals with an average length of 14 mm, and an average diameter of 16 mm. Furthermore, the genitals of the flower, namely the stamens, are five in number, and there is one pistil in each flower.
Herbarium book: Learning media in medicinal plants lecture Nining Nuraida; Suraida Suraida; Nurlinda Nurlinda; Try Susanti
Jurnal Biolokus Vol 6, No 1 (2023): June
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/biolokus.v6i1.2185

Abstract

This study aims to (1) determine the types of medicinal plants used in Teluk Kayu Putih village, (2) describe the development of the herbarium book media for medicinal plants lecture,   (3) determine the validity and (4) the readability test of the herbarium book of medicinal plants as a learning media. The ADDIE development model research consists of 2 stages of research. The first stage of qualitative research is to obtain data on the types of medicinal plants in Teluk Kayu Putih Village. The second stage of media development is making a herbarium book. Field data collection methods include observation and documentation (first stage) and questionnaire (second stage). The results obtained are: (1) The types of plants used as medicine in Teluk Kayu Putih Village are 27 species grouped into 25 families; the most plant species came from Family Euphorbiaceae, Myrtaceae, and Zingiberaceae, each with 2 species, (2) The media developed are specimens of medicinal plants originating from Teluk Kayu Putih village, including plant parts that have been dried using a pressing technique, arranged in a scrapbook with a black base color derived from black cardboard, the spesimens are pasted one by one and then identified, as well as put together and bound in a spiral to form a book, (3) The validity test from material experts and media experts on the media produced obtained a score of 81,35% and 85,26%, while the validity test score obtained a score of 86,31% (very feasible), (4) The readability test of the herbarium book by 23 respondents obtained an average percentage score of 92,6%, means that the media is suitable to use.
Phytoremediation of nickel by Paraserianthes falcataria with varying levels of manure Hilda Ayu Melvi Amalia; Armadi Chairunnas; Andhika Puspito Nugroho
Jurnal Biolokus Vol 6, No 1 (2023): June
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/biolokus.v6i1.2118

Abstract

The objective of this study were to identify effective variations in fertilizer doses for phytoremediation of heavy metal nickel (Ni) by using sengon plants (Paraserianthes falcataria) before being used for post-mining land reclamation. This research is an experimental study, the growth parameters measured include plant height, number of leaves, root length, and plant biomass. The data obtained were analyzed using analysis of variance (ANOVA) and continued with Duncan's test. The manure used consists of chicken manure, calcium carbonate, and rice bran. Variation in fertilizer dose is the ratio between manure to mine soil 40:60 (A), 50:50 (B), 60:40 (C), 70:30 (D), and control without fertilizer (E) with four repetitions time. The results showed that there was a significant difference between the concentration of nickel content before and after the treatment of fertilizer dosing (p>0.05), which means that the dose of fertilizer can affect plant growth and phytoremediation abilities. The dose of D fertilizer (70:30) is the most suitable for phytoremediation of heavy metal nickel (Ni) because it shows the highest heavy metal concentration in the roots, which is 3.2 ppm. The plant growth parameters measured showed that the dose of fertilizer B (50:50) was most suitable for increasing plant height and biomass (P. falcataria) with a plant height of 27 cm and a biomass of 0.9 g/m2. The dose of C fertilizer (60:40) is most suitable for increasing the number of leaves with an average of 111.5 leaves. Control without fertilizer (E) is most suitable for increasing the root length of P. falcataria. Thus, the addition of manure affects the growth of P. falcataria, and nickel phytoremediation using P. falcataria at the dose of manure D (70:30) can reduce the nickel content in the soil.

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