Pub Date : 2021-12-31DOI: 10.24042/biosfer.v12i2.9737
Swastika Oktavia, C. Novi
The concentration of Lebak Batik industrial wastewater contains the pollutant element of lead metal that negatively impacts organisms' content in the water. This study was focused on the acute toxicity of household-scale Lebak Batik industrial wastewater on carp. The methods used were waste characteristics test, animal acclimatization, acute toxicity test for 96 hours with 0, 10, 20, 30, 40, and 50% treatments, measurement of environmental parameters, and data analysis using probit analysis. The results showed that the lethal time (LT50) and lethal concentration (LC50) for 96 hours of treatment were 1,8 days and 8,56%, respectively, with a Toxicity Unit Area (TUa) of 11,68. This proved that the wastewater from the Lebak batik industry had a major effect on causing acute toxicity.
{"title":"Acute Toxicity of Household-Scale Lebak Batik Industrial Wastewater on Common Carp","authors":"Swastika Oktavia, C. Novi","doi":"10.24042/biosfer.v12i2.9737","DOIUrl":"https://doi.org/10.24042/biosfer.v12i2.9737","url":null,"abstract":"The concentration of Lebak Batik industrial wastewater contains the pollutant element of lead metal that negatively impacts organisms' content in the water. This study was focused on the acute toxicity of household-scale Lebak Batik industrial wastewater on carp. The methods used were waste characteristics test, animal acclimatization, acute toxicity test for 96 hours with 0, 10, 20, 30, 40, and 50% treatments, measurement of environmental parameters, and data analysis using probit analysis. The results showed that the lethal time (LT50) and lethal concentration (LC50) for 96 hours of treatment were 1,8 days and 8,56%, respectively, with a Toxicity Unit Area (TUa) of 11,68. This proved that the wastewater from the Lebak batik industry had a major effect on causing acute toxicity.","PeriodicalId":33978,"journal":{"name":"Biosfer Jurnal Tadris Biologi","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81841549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-31DOI: 10.24042/biosfer.v12i2.9641
Doki Efendi, M. Meilinda, R. Riyanto
This research aims at finding out the form of indigenous knowledge of the Tebat Benawa Community toward Tebat Bukit conservation. The researchers conducted this descriptive study from December 2019 to January 2020. The object of the study was the Tebat Benawa Village Community. The data were collected through literature study, observation, and semi-structured interviews. The results show that the community has five indigenous knowledge in the implementation of Tebat Bukit conservation which is classified into three indicators: the availability of tebat (artificial lake) water, Tebat Bukit, and ghumbus; the use of tebat water called Siring Ayik; tebat and its water management, namely nebasi jalan, ghumbus, and society knowledge transfer in preserving Tebat Bukit through direct experience sharing. The experience sharing is conducted by fishing in tebat, implementing indigenous tradition, socializing with the village administration, giving parental advice, and fostering petatah-petitih (oral tradition on local wisdom).
{"title":"The Besemah Community’s Indigenous Knowledge of Tebat Bukit Conservation in Tebat Benawa Village","authors":"Doki Efendi, M. Meilinda, R. Riyanto","doi":"10.24042/biosfer.v12i2.9641","DOIUrl":"https://doi.org/10.24042/biosfer.v12i2.9641","url":null,"abstract":"This research aims at finding out the form of indigenous knowledge of the Tebat Benawa Community toward Tebat Bukit conservation. The researchers conducted this descriptive study from December 2019 to January 2020. The object of the study was the Tebat Benawa Village Community. The data were collected through literature study, observation, and semi-structured interviews. The results show that the community has five indigenous knowledge in the implementation of Tebat Bukit conservation which is classified into three indicators: the availability of tebat (artificial lake) water, Tebat Bukit, and ghumbus; the use of tebat water called Siring Ayik; tebat and its water management, namely nebasi jalan, ghumbus, and society knowledge transfer in preserving Tebat Bukit through direct experience sharing. The experience sharing is conducted by fishing in tebat, implementing indigenous tradition, socializing with the village administration, giving parental advice, and fostering petatah-petitih (oral tradition on local wisdom).","PeriodicalId":33978,"journal":{"name":"Biosfer Jurnal Tadris Biologi","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82567108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-30DOI: 10.24042/biosfer.v12i2.10138
E. Gultom, H. Hasruddin, A. F. Sitompul, Albert D Situmorang, E. Prasetya
This research employed the experimental method with descriptive data analysis. It aimed to isolate and identify sponge symbiont bacteria with antibacterial potential against Multi-Drug Resistance Organisms (MDRO) with the 16S rRNA gene marker. Based on the study results, two sponges were obtained, namely Clathrina sp and Agelas sp, each having 11 and 7 isolates of symbiont bacteria, respectively. Based on the antibacterial activity test results, out of 18 isolates of symbiont bacteria, only 4 had antibacterial potential against MDRO (Klebsiella pneumoniae ESBL, Pseudomonas aeruginosa ESBL, or Staphylococcus lugdunensis MRSA) with inhibition zones of 9.3 mm, 8.3 mm, and 8.1 mm, respectively. The results of bacterial identification using the 16S rRNA gene sequence isolate S1I3, S1I9, and A1I3 belong to the Bacillus cereus and Bacillus paramycoides types. This research is expected to provide important information about sponge symbiont bacteria with antibacterial potential against MDRO.
{"title":"Identification of Bacterial Symbiont Sponge with Antibacterial Activity against Multi Drug Resistant Organism (MDRO) Bacteria from Sea Waters in Sibolga, North Sumatra Indonesia","authors":"E. Gultom, H. Hasruddin, A. F. Sitompul, Albert D Situmorang, E. Prasetya","doi":"10.24042/biosfer.v12i2.10138","DOIUrl":"https://doi.org/10.24042/biosfer.v12i2.10138","url":null,"abstract":"This research employed the experimental method with descriptive data analysis. It aimed to isolate and identify sponge symbiont bacteria with antibacterial potential against Multi-Drug Resistance Organisms (MDRO) with the 16S rRNA gene marker. Based on the study results, two sponges were obtained, namely Clathrina sp and Agelas sp, each having 11 and 7 isolates of symbiont bacteria, respectively. Based on the antibacterial activity test results, out of 18 isolates of symbiont bacteria, only 4 had antibacterial potential against MDRO (Klebsiella pneumoniae ESBL, Pseudomonas aeruginosa ESBL, or Staphylococcus lugdunensis MRSA) with inhibition zones of 9.3 mm, 8.3 mm, and 8.1 mm, respectively. The results of bacterial identification using the 16S rRNA gene sequence isolate S1I3, S1I9, and A1I3 belong to the Bacillus cereus and Bacillus paramycoides types. This research is expected to provide important information about sponge symbiont bacteria with antibacterial potential against MDRO.","PeriodicalId":33978,"journal":{"name":"Biosfer Jurnal Tadris Biologi","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84902648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-30DOI: 10.24042/biosfer.v12i2.9883
M. A. D. Susanto, Okta Fina Arianti
This research aimed to identify and analyze the diversity and abundance of dragonflies and damselflies species at Sabo Dam Complang. The samples were taken using the VES (Visual Encounter Survey) method and two transect methods: line transects, and belt transects. The data obtained were analyzed using the Shannon-Wienner species diversity index (H') and the relative abundance of species (RA). The results showed that at Sabo Dam Complang, the researchers found 11 species with a total of 63 individuals dragonfly of Anisoptera suborder and nine species with a total of 160 individuals from 5 families in the Zygoptera suborder. The results of this research show a diversity index value of 2.59.
{"title":"Diversity and Abundance of Dragonfly (Anisoptera) and Damselfly (Zygoptera) at Sabo Dam Complang, Kediri, East Java, Indonesia","authors":"M. A. D. Susanto, Okta Fina Arianti","doi":"10.24042/biosfer.v12i2.9883","DOIUrl":"https://doi.org/10.24042/biosfer.v12i2.9883","url":null,"abstract":"This research aimed to identify and analyze the diversity and abundance of dragonflies and damselflies species at Sabo Dam Complang. The samples were taken using the VES (Visual Encounter Survey) method and two transect methods: line transects, and belt transects. The data obtained were analyzed using the Shannon-Wienner species diversity index (H') and the relative abundance of species (RA). The results showed that at Sabo Dam Complang, the researchers found 11 species with a total of 63 individuals dragonfly of Anisoptera suborder and nine species with a total of 160 individuals from 5 families in the Zygoptera suborder. The results of this research show a diversity index value of 2.59.","PeriodicalId":33978,"journal":{"name":"Biosfer Jurnal Tadris Biologi","volume":"167 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74117551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-30DOI: 10.24042/biosfer.v12i1.8022
Yusdike Adystia, Meidina Rahmawati, K. Anam, R. S. Iswari, P. Dewi
This study aims to determine the effect of tempeh yeast inoculum on the color, odor, and yield in the manufacture of Virgin Coconut Oil (VCO) from Cocos nucifera viridis. This research was conducted in November 2020 in Brebes, Magelang, and Lampung. This research employed the descriptive quantitative method. The population of this experiment was coconut fruit found in Lampung, Brebes, and Magelang. The sample used was green coconut (Cocos nucifera viridis) found in Lampung, Brebes, and Magelang. The working procedure of this research consisted of fermenting the sample and observing the oil produced by Virgin Coconut Oil. This research's data collection techniques were observation, documentation, and products calculation. Based on the observations, the researchers found the highest yield in the experiment of 80 ml cream with an inoculum of 8 grams (30.4%), followed by a volume of 80 ml of cream with a 6-gram inoculum (28.4%). The smallest yield was formed at a volume of 80 ml cream with inoculum 4 grams (14.6%). The VCO obtained in this research had a distinctive aroma of coconut oil and was clear in color. Therefore, the amount of tempeh yeast inoculum affects the color, odor, and yield in the manufacture of Virgin Coconut Oil (VCO) from Cocos nucifera viridis.
{"title":"The Effect of Tempe Yeast Inoculum Amount on the Quantity and Quality of Cocos nucifera viridis Virgin Coconut Oil (VCO)","authors":"Yusdike Adystia, Meidina Rahmawati, K. Anam, R. S. Iswari, P. Dewi","doi":"10.24042/biosfer.v12i1.8022","DOIUrl":"https://doi.org/10.24042/biosfer.v12i1.8022","url":null,"abstract":"This study aims to determine the effect of tempeh yeast inoculum on the color, odor, and yield in the manufacture of Virgin Coconut Oil (VCO) from Cocos nucifera viridis. This research was conducted in November 2020 in Brebes, Magelang, and Lampung. This research employed the descriptive quantitative method. The population of this experiment was coconut fruit found in Lampung, Brebes, and Magelang. The sample used was green coconut (Cocos nucifera viridis) found in Lampung, Brebes, and Magelang. The working procedure of this research consisted of fermenting the sample and observing the oil produced by Virgin Coconut Oil. This research's data collection techniques were observation, documentation, and products calculation. Based on the observations, the researchers found the highest yield in the experiment of 80 ml cream with an inoculum of 8 grams (30.4%), followed by a volume of 80 ml of cream with a 6-gram inoculum (28.4%). The smallest yield was formed at a volume of 80 ml cream with inoculum 4 grams (14.6%). The VCO obtained in this research had a distinctive aroma of coconut oil and was clear in color. Therefore, the amount of tempeh yeast inoculum affects the color, odor, and yield in the manufacture of Virgin Coconut Oil (VCO) from Cocos nucifera viridis.","PeriodicalId":33978,"journal":{"name":"Biosfer Jurnal Tadris Biologi","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74500842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-30DOI: 10.24042/biosfer.v12i2.7877
K. Anam, M. Kamelia, Indah Faridah
This research aims to determine the vitamin C potential of tree sorrels (Averrhoa bilimbi) as a natural latex coagulant. The researchers employed the Completely Randomized Design (CRD) method. The method consisted of three repetitions with five treatments, namely negative control (without clotting) and positive control, by administering tree sorrel extract (Averrhoa bilimbi) with a volume of 5 ml, 10 ml, 15, and 20 ml. The researchers tested the vitamin C levels using UV-VIS Spectrophotometry DR 6000 with a wavelength of 265 nm to 271 nm. Furthermore, the data were analyzed using the One-Way ANOVA statistical test and the LSD to determine the most effective volume as a latex coagulant. The quantitative data were the clotting time and latex weight. The results showed that tree sorrel extract could be used as a latex coagulant. The fastest duration (1.18 minutes) and the highest weight (34.30 grams) of latex were found in the 20 ml volume. At the same time, the lowest yield was at a volume of 5 ml with a clotting time of 5.4 minutes and a weight of 18.62 grams.
{"title":"The Vitamin C Potential of Sorrel Tree (Averrhoa bilimbi) as LATEX Coagulant","authors":"K. Anam, M. Kamelia, Indah Faridah","doi":"10.24042/biosfer.v12i2.7877","DOIUrl":"https://doi.org/10.24042/biosfer.v12i2.7877","url":null,"abstract":"This research aims to determine the vitamin C potential of tree sorrels (Averrhoa bilimbi) as a natural latex coagulant. The researchers employed the Completely Randomized Design (CRD) method. The method consisted of three repetitions with five treatments, namely negative control (without clotting) and positive control, by administering tree sorrel extract (Averrhoa bilimbi) with a volume of 5 ml, 10 ml, 15, and 20 ml. The researchers tested the vitamin C levels using UV-VIS Spectrophotometry DR 6000 with a wavelength of 265 nm to 271 nm. Furthermore, the data were analyzed using the One-Way ANOVA statistical test and the LSD to determine the most effective volume as a latex coagulant. The quantitative data were the clotting time and latex weight. The results showed that tree sorrel extract could be used as a latex coagulant. The fastest duration (1.18 minutes) and the highest weight (34.30 grams) of latex were found in the 20 ml volume. At the same time, the lowest yield was at a volume of 5 ml with a clotting time of 5.4 minutes and a weight of 18.62 grams.","PeriodicalId":33978,"journal":{"name":"Biosfer Jurnal Tadris Biologi","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81324582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-30DOI: 10.24042/biosfer.v12i2.10467
Nur Khalifah, R. Riyanto, Khiron Nazip, M. Meilinda
Air merupakan komponen penting yang harus ada di bumi dan tetap harus di jaga kelestariannya dengan konservasi air yang diajarkan sejak dini, melalui sistem belajar yang kompleks pada materi siklus air dan mengaitkannya dengan berpikir sistem dikembangkanlah LKPD berbasis system approach pada topik siklus air di SMP yang di uji kevalidan dan kepraktisannya melalui metode Developmental Research tipe II oleh Richey Klein (2005) dengan dua tahapan yaitu fase eksplorasi dan uji coba kepada peserta didik. Fase uji coba dilakukan melalui metode lesson study yang diobservasi oleh lima orang observer dengan tujuan untuk mengetahui aktivitas siswa selama pembelajaran berlangsung. Hasil LKPD divalidasi oleh lima orang validator untuk menguji kevalidan LKPD dengan menggunakan skala likert. Teknik analisis data dilakukan dengan analisis data kuantitatif dan kualitatif. Hasil yang diperoleh berupa persentasi uji kevalidan dengan rata-rata78% yang artinya LKPD sudah dalam kategori valid. Kemudian dari hasil uji praktikalitas peserta didik diperoleh hasil rata-rata 81,02% yang menunjukkan kategori sangat praktis. Sehingga di hasilkanlah LKPD yang mempunyai nilai kevalidan dan kepraktisan yang layak digunakan dalam proses pembelajaran siklus air.
{"title":"Developing Student Worksheet Based on System Approach on Water Cycle Topic of Water Conservation Learning at Junior High School","authors":"Nur Khalifah, R. Riyanto, Khiron Nazip, M. Meilinda","doi":"10.24042/biosfer.v12i2.10467","DOIUrl":"https://doi.org/10.24042/biosfer.v12i2.10467","url":null,"abstract":"Air merupakan komponen penting yang harus ada di bumi dan tetap harus di jaga kelestariannya dengan konservasi air yang diajarkan sejak dini, melalui sistem belajar yang kompleks pada materi siklus air dan mengaitkannya dengan berpikir sistem dikembangkanlah LKPD berbasis system approach pada topik siklus air di SMP yang di uji kevalidan dan kepraktisannya melalui metode Developmental Research tipe II oleh Richey Klein (2005) dengan dua tahapan yaitu fase eksplorasi dan uji coba kepada peserta didik. Fase uji coba dilakukan melalui metode lesson study yang diobservasi oleh lima orang observer dengan tujuan untuk mengetahui aktivitas siswa selama pembelajaran berlangsung. Hasil LKPD divalidasi oleh lima orang validator untuk menguji kevalidan LKPD dengan menggunakan skala likert. Teknik analisis data dilakukan dengan analisis data kuantitatif dan kualitatif. Hasil yang diperoleh berupa persentasi uji kevalidan dengan rata-rata78% yang artinya LKPD sudah dalam kategori valid. Kemudian dari hasil uji praktikalitas peserta didik diperoleh hasil rata-rata 81,02% yang menunjukkan kategori sangat praktis. Sehingga di hasilkanlah LKPD yang mempunyai nilai kevalidan dan kepraktisan yang layak digunakan dalam proses pembelajaran siklus air.","PeriodicalId":33978,"journal":{"name":"Biosfer Jurnal Tadris Biologi","volume":"178 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76851775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-29DOI: 10.24042/biosfer.v12i2.9913
Rizki Amalia Nur, N. Nurhidayah
This research aims at finding the effect of the Rotating Trio Exchange (RTE) model assisted by the couple card media on the biology learning outcomes of SMAS DDI Maros. The research method was quantitative with a quasi-experimental and non-equivalent group pretest-posttest design. The research results were obtained through hypothesis testing. The pretest value in the control and the experimental classes was 0.138, where Sig. was higher than α. Therefore, there was no significant learning outcomes difference in the pretest values in both classes. Furthermore, the obtained posttest value was 0.000, where Sig. was lower than α. Therefore, there were significant learning outcomes differences between the two classes.
{"title":"An Implementation of Rotating Trio Exchange (RTE) Assisted by Coup Card toward Biology Learning Outcome","authors":"Rizki Amalia Nur, N. Nurhidayah","doi":"10.24042/biosfer.v12i2.9913","DOIUrl":"https://doi.org/10.24042/biosfer.v12i2.9913","url":null,"abstract":"This research aims at finding the effect of the Rotating Trio Exchange (RTE) model assisted by the couple card media on the biology learning outcomes of SMAS DDI Maros. The research method was quantitative with a quasi-experimental and non-equivalent group pretest-posttest design. The research results were obtained through hypothesis testing. The pretest value in the control and the experimental classes was 0.138, where Sig. was higher than α. Therefore, there was no significant learning outcomes difference in the pretest values in both classes. Furthermore, the obtained posttest value was 0.000, where Sig. was lower than α. Therefore, there were significant learning outcomes differences between the two classes.","PeriodicalId":33978,"journal":{"name":"Biosfer Jurnal Tadris Biologi","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77827679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-14DOI: 10.24042/BIOSFER.V12I1.8855
Friska Chairunnisa, Y. Maryuningsih, D. Maknun
The research aims to analyze the application of e-modules in improving scientific literacy skills. This research employed the quasi-experimental with pretest-posttest control design group. The population of this study was eleventh-grade students of SMA Negeri 1 Anjatan which consisted of 15 classes, specifically seven science classes and eight social studies classes. The research sample was taken using random sampling. The researchers collected the research data using observations and tests. Furthermore, the data was analyzed using ANES software and SPSS v.25. The analyzed data were the prerequisite tests data and the t-test data. The results obtained from students' learning activities show the highest learning activities occurred at the data collection stage. There science literacy skills improvement between the control class and the experimental class was different. The experimental class' N-gain value was 0.30 and the control class' N-gain value was 0.2. Furthermore, the result of the sig statistical tests was 0.000, which was lower than 0.655. Therefore, Ho was rejected and Ha was accepted. It can be concluded that there was an improvement difference between the experimental class and the control class regarding scientific literacy skills.
本研究旨在分析电子模块在提高科学素养技能方面的应用。本研究采用准实验、前测后测对照设计组。本研究的人群为SMA Negeri 1 Anjatan的11年级学生，共15个班，其中7个科学班和8个社会研究班。研究样本采用随机抽样。研究人员通过观察和测试收集研究数据。采用ANES软件和SPSS v.25对数据进行分析。所分析的数据为前提检验数据和t检验数据。从学生的学习活动中得到的结果显示，最高的学习活动发生在数据收集阶段。对照组与实验班学生科学素养技能的提高存在差异。实验组n -增益值为0.30，对照组n -增益值为0.2。此外，sig统计检验结果为0.000，低于0.655。因此，何被拒绝，何被接受。由此可见，实验班与对照班在科学素养技能方面存在显著的提高差异。
{"title":"The Application of Excretion System E-Module to Improve Science Literacy Skills","authors":"Friska Chairunnisa, Y. Maryuningsih, D. Maknun","doi":"10.24042/BIOSFER.V12I1.8855","DOIUrl":"https://doi.org/10.24042/BIOSFER.V12I1.8855","url":null,"abstract":"The research aims to analyze the application of e-modules in improving scientific literacy skills. This research employed the quasi-experimental with pretest-posttest control design group. The population of this study was eleventh-grade students of SMA Negeri 1 Anjatan which consisted of 15 classes, specifically seven science classes and eight social studies classes. The research sample was taken using random sampling. The researchers collected the research data using observations and tests. Furthermore, the data was analyzed using ANES software and SPSS v.25. The analyzed data were the prerequisite tests data and the t-test data. The results obtained from students' learning activities show the highest learning activities occurred at the data collection stage. There science literacy skills improvement between the control class and the experimental class was different. The experimental class' N-gain value was 0.30 and the control class' N-gain value was 0.2. Furthermore, the result of the sig statistical tests was 0.000, which was lower than 0.655. Therefore, Ho was rejected and Ha was accepted. It can be concluded that there was an improvement difference between the experimental class and the control class regarding scientific literacy skills.","PeriodicalId":33978,"journal":{"name":"Biosfer Jurnal Tadris Biologi","volume":"199 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83105677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-14DOI: 10.24042/BIOSFER.V12I1.7128
C. Amarantini, V. C. Prakasita, Maria Trivonia Sema
This study aims to isolate and identify LABs that spontaneously grow fermented cocoa beans that have the potential as probiotics. The isolation was carried out selectively using an MRS agar medium supplemented with 1% CaCO3. LAB's potential as a probiotic was selected based on the acid resistance test, bile salt resistance test, and antimicrobial activity test. The results showed that three isolates of lactic acid bacteria, namely strains K1B1, K2T2, and K3B4 were tolerant of gastric acid's pH conditions (pH 2.5, pH 3, and pH 4). They also can survive the bile salts (0.3%, 0, 5%, and 1%) and have antibacterial characteristics. The three isolates were identified as Lactobacillus Plantarum species (ID 99.9%).
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