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<![CDATA[Toxicological assessment of lemongrass (Cymbopogon nardus L.) liquid waste: Biolarvicides againts the third instar larvae of Aedes aegypti ]]>
<![CDATA[Putri Pameswari]]>;
<![CDATA[Khairiza Lubis]]>
<![CDATA[ Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 5, No 2 (2022): December ]]>
Publisher : <![CDATA[Universitas Islam Negeri Sumatera Utara ]]>
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DOI: 10.30821/biolokus.v5i2.1610
<![CDATA[Liquid waste generated from the distillation process of lemongrass (Cymbopogon nardus L.) in a relatively short time will cause a foul odor, ammonia or phosphine that occurs due to the fermentation process. These problems can be minimized by reusing liquid waste of lemongrass (C. nardus L.) into biolarvicides. This study aims to determine the value of Lethal Concentration 50 (LC50) from the liquid waste of lemongrass (C. nardus L.) which can kill the third instar larvae of A. aegypti mosquitoes for 24 hours. The liquid waste of lemongrass (C. nardus L.) used in this study is waste obtained from the lemongrass (C. nardus L.) distillery located on Jalan Masjid Ulayat, Percut Sei Tuan District, Deli Serdang Regency, North Sumatra. A total of 10 mosquito larvae of A. aegypti instar III were used for each different concentration of 6,982%, 7,607%, 8,287%, 9,027% and 9,833%. Each concentration consisted of five repetitions and was observed for 24 hours. After 24 hours, larvae that died were analyzed using probit analysis via SPSS 25. The results showed that the LC50 of lemongrass (C. nardus L.) liquid waste can kill larvae for 24 hours was 8,763%.]]>
<![CDATA[Statistical knowledge of biology education students in Malang ]]>
<![CDATA[Diani Fatmawati]]>;
<![CDATA[Mohannad Alobid]]>;
<![CDATA[Indah Permatasari]]>;
<![CDATA[Solikhah Solikhah]]>;
<![CDATA[Ahmad Fauzi]]>
<![CDATA[ Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 5, No 2 (2022): December ]]>
Publisher : <![CDATA[Universitas Islam Negeri Sumatera Utara ]]>
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DOI: 10.30821/biolokus.v5i2.1321
<![CDATA[Statistical knowledge is a basic competency which must be possessed by Biology Education students before conducting research. Unfortunately, Statistics is often considered a difficult subject by biology students. The purpose of this survey research was to explore the statistical knowledge of Biology Education students. A total of 40 students in the Universitas Muhammadiyah Malang were involved in this research. The data were collected using a questionnaire containing 12 statements. Descriptive statistics was used to analyze the research data. The results showed that the mean score of students' statistical knowledge was 77.92 ± 17.96; meanwhile, 52.5% of students’ knowledge was categorized as good. In addition, the accuracy of student answers on several items reached over 90%, even though there were also items in which the answers were only 50% accurate. Therefore, innovation in Statistics lecture needs to be carried out to optimize the empowerment of statistical knowledge for Biology Education students.]]>
<![CDATA[Correlation between scientific literacy with higher order thinking skills and self-efficacy in biology learning ]]>
<![CDATA[May Firdaw Arifiyyati]]>;
<![CDATA[Ndzani Latifatur Rofi'ah]]>;
<![CDATA[Listyono Listyono]]>
<![CDATA[ Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 5, No 2 (2022): December ]]>
Publisher : <![CDATA[Universitas Islam Negeri Sumatera Utara ]]>
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DOI: 10.30821/biolokus.v5i2.1633
<![CDATA[Education is one of the fields or perspectives that have significant developments in the progress of the times. Technological developments are developing the world of education, called the era of the industrial revolution 4.0. Therefore, several things must be mastered, namely competence in each student's life and multiliteracy in mental, physical, and intellectual capacities. One is Science Literacy Ability and Higher Order Thinking Skills (HOTS). In addition to knowledge competence, students must also have confidence in themselves to do and do well, namely self-efficacy. This study aims to determine the relationship between scientific literacy skills, HOTS, and self-efficacy as mediating variables. This type of research is correlational with the survey method. The sampling technique used is Simple Random Sampling with a sample of the population of class XI SMA students who are studying biology. Techniques and data collection instruments using tests in the form of questions (scientific literacy skills and HOTS) and statement questionnaires (self-efficacy). The research was conducted in March-May 2022 at SMAN 3 Semarang. Analysis of research data using quantitative descriptions. The results of this study are that there is a relationship between scientific literacy ability and HOTS with an influence proportion of 7.9%, there is no relationship between scientific literacy ability and self-efficacy with an influence proportion of 0.2%, there is no relationship between HOTS and self-efficacy influence 1.2%.]]>
<![CDATA[Curriculum 2013: Analysis of biology teachers’ obstacles in senior high schools, Sungai Kanan district ]]>
<![CDATA[Fitri Andreani]]>;
<![CDATA[Rahmi Nazliah]]>
<![CDATA[ Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 5, No 2 (2022): December ]]>
Publisher : <![CDATA[Universitas Islam Negeri Sumatera Utara ]]>
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DOI: 10.30821/biolokus.v5i2.1325
<![CDATA[This study aims to explore the obstacles of biology teachers in Sungai Kanan senior high schools have in implementing the curriculum 2013. In this qualitative study, biology teachers in high schools in the Sungai Kanan District served as the subjects. The population utilized is comprised of high school teachers from the Sungai Kanan District, including six individuals from SMAN 1 Sei Kanan, SMAN 2 Sei Kanan, and SMAS Karya Handayani. The approach employed is purposive sampling, questionnaires and interviews are utilized to obtain data. According to the findings of an examination of the hurdles biology instructors face in adopting the 2013 curriculum, which has been in place for about eight years, senior high school biology teachers in the Sungai Kanan subdistrict have no obstacles to implementing the 2013 curriculum. Biology teachers' comprehension of the indicators of biology teachers' comprehension in the 2013 curriculum; biology teachers' comprehension of the 2013 syllabus; biology teachers' comprehension of the 2013 lesson plans; biology teachers' comprehension of the biology lesson process; biology teachers' comprehension of the 2013 curriculum's facilities and infrastructure; and biology teachers' comprehension of the biology lesson process This problem is caused by the fact that the 2013 biology teacher's manual was not finished yet, lack of time, teachers and students, infrastructure, and supportive facilities.]]>
<![CDATA[Student argumentation skills’ analysis on the discussion of socio-scientific issues in the concept of viruses ]]>
<![CDATA[Yuke Mardiati]]>;
<![CDATA[Yanti Herlanti]]>;
<![CDATA[Alfi Lailatul Qodriyah]]>
<![CDATA[ Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 5, No 2 (2022): December ]]>
Publisher : <![CDATA[Universitas Islam Negeri Sumatera Utara ]]>
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DOI: 10.30821/biolokus.v5i2.1945
<![CDATA[This study aimed to analyze the argumentation skills of students in learning through discussion of socio-scientific issues with the concept of viruses. This research is descriptive which describes the quality of oral and written arguments. The research was conducted in class of X MIPA at SMAN Jakarta. There were 34 students involved in this study. The method of analysis to determine the pattern of arguments used is the Toulmin Analysis. The analysis of collaborative oral arguments in class used Erduran's analysis framework. Meanwhile, the quality of individual written argumentation was Dawson and Venville's analysis. The results showed that the quality of students' oral arguments reached level 5. This means that students have been able to make a claim accompanied by a warrant and rebuttal quite well. The quality of the students' written arguments reaches levels 2 and 3. This means that students' arguments consist of arguments in the form of claims (claims) accompanied by guarantors of claims (warrants) and evidence (data) and rebuttals that are still weak.. The augmentation process verbally and collaboratively in class has reached the highest level, but individually and in writing it is still at a moderate level.]]>
<![CDATA[Argumentation skill through a scientific approach: Study at different school accreditations rating ]]>
<![CDATA[Ria Afrilia]]>;
<![CDATA[Neni Hasnunidah]]>;
<![CDATA[Dina Maulina]]>
<![CDATA[ Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 5, No 2 (2022): December ]]>
Publisher : <![CDATA[Universitas Islam Negeri Sumatera Utara ]]>
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DOI: 10.30821/biolokus.v5i2.1339
<![CDATA[This study aims to determine the differences in students' argumentation skills in learning biology on the subject matter of the respiratory system through a scientific approach. This research was conducted in class XII SMA in Way Kanan Regency, Lampung Province with an ex post facto design. The sampling technique used in this study was stratified random sampling with the determination of research subjects at SMAN 1 Baradatu which was accredited A, SMAN 2 Buay Bahuga was accredited B and MA Miftahul Ulum Way Tuba which was accredited C. Data collection instruments consisted of argumentation skill tests, interviews, study documentation and questionnaires. The argumentation skill data were analyzed with the help of Excel, hypothesis testing was carried out with one-way ANOVA and LSD test, interview data and learning documents were analyzed descriptively qualitatively with the Miles and Huberman model and questionnaire data were analyzed descriptively in percentage form. The results showed that there was a significant difference in argumentation skill among high school students with accreditation of A, B and C (sig. < 0.05). The average argumentation skill of students from A-accredited high schools was higher than B and C accredited high schools, but the average value of the three schools was very low. Students from A, B and C accredited high schools could make claims well, but had not been able to provide grounds, warrants and backings that are relevant to the claim. This was because students wer not used to working on argumentation questions and teachers had not optimized learning activities with a scientific approach.]]>
<![CDATA[Development of socioscientific issues-based e-module on environmental change topic ]]>
<![CDATA[Diyyan Marneli]]>;
<![CDATA[Febri Yulia Susanti]]>
<![CDATA[ Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 5, No 2 (2022): December ]]>
Publisher : <![CDATA[Universitas Islam Negeri Sumatera Utara ]]>
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DOI: 10.30821/biolokus.v5i2.2000
<![CDATA[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.]]>
<![CDATA[Reevaluation of methanol extract from Phoenix dactylifera var. sukkari fruit’s potential against acne-inducing bacteria ]]>
<![CDATA[Reza Anindita]]>;
<![CDATA[Intan Kurnia Putri]]>;
<![CDATA[Maya Uzia Beandrade]]>;
<![CDATA[Dede Dwi Nathalia]]>;
<![CDATA[Melania Perwitasari]]>
<![CDATA[ Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 5, No 2 (2022): December ]]>
Publisher : <![CDATA[Universitas Islam Negeri Sumatera Utara ]]>
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DOI: 10.30821/biolokus.v5i2.1363
<![CDATA[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.]]>
<![CDATA[Length-weight relationship and condition factors of Channa striata in Tanjung Haloban village, Labuhanbatu ]]>
<![CDATA[Asri Asyhari]]>;
<![CDATA[Rusdi Machrizal]]>
<![CDATA[ Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 5, No 2 (2022): December ]]>
Publisher : <![CDATA[Universitas Islam Negeri Sumatera Utara ]]>
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DOI: 10.30821/biolokus.v5i2.1316
<![CDATA[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.]]>
<![CDATA[Potential of biological agents (Pseudomonas sp.) in plastic waste biodegradation process ]]>
<![CDATA[Aisyah Chofifawati]]>;
<![CDATA[Robbi Mauizzatul Hikmah]]>;
<![CDATA[Nilana Izzati]]>;
<![CDATA[Lathifah Nurul Fauzi]]>;
<![CDATA[Tara Puri Ducha Rahmani]]>;
<![CDATA[Arnia Sari Mukaromah]]>
<![CDATA[ Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 5, No 2 (2022): December ]]>
Publisher : <![CDATA[Universitas Islam Negeri Sumatera Utara ]]>
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DOI: 10.30821/biolokus.v5i2.1192
<![CDATA[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.]]>
