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<![CDATA[PENGARUH PEMBERIAN ELISITOR EKSTRAK KHAMIR Saccharomyces cerevisiae Hansen TERHADAP KANDUNGAN AJMALISIN DALAM KULTUR AGREGAT SEL Catharanthus roseus (L.) G. Don. ]]>
<![CDATA[Ratnasari, Jujun]]>;
<![CDATA[Siregar, Arbayah H]]>;
<![CDATA[RE, Rizkita]]>
<![CDATA[ BERITA BIOLOGI Vol 5, No 4 (2001) ]]>
Publisher : <![CDATA[Research Center for Biology-Indonesian Institute of Sciences ]]>
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DOI: 10.14203/beritabiologi.v5i4.1118
<![CDATA[There were many ways to obtain high production of secondary metabolites in plant tissue culture; among the other is elicitation.An experiment to study the effect of elicitor derived from Saccharomyces cerevisiae Hansen extract on ajmalicine content in cell aggregates culture of Catharanthus roseus (L.) G.Don, has been conducted. The media used for callus induction and cell aggregates culture were Zenk 6 5(1977) with addition of 2.5 x 10" M Naphthalene Acetic Acid (NAA) and 10 M 6-Benzilaminopurine (BAP).The cell aggregates culturewas subcultured three times and then elicitated with elicitor derived from autoclaved 5.cerevisiae extract at concentrations 0.5, 1.0, 2.5%,and harvested at 18, 24,and 36 hours after elicitation.The ajmalicine was analyzed qualitatively and quantitatively by using High Pressure Liquid Chromatography (HPLC) connected to chromatopack CR-7A Plus. The cell aggregates of C. roseus culture produced ajmalicine both in the cells and the media.The result of elicitation showed that ajmalicine content was influenced significantly by concentration and harvesting time. The highest ajmalicine content in the cell aggregates was 25.288 ± 0.102 jig/g dw, whilst that in media was 524.600 ± 0.566 \ML. The optimum concentration of S. cerevisiae extract was 0.5%, and the best harvesting time was 24 hours.]]>
<![CDATA[VALIDITY OF LEARNING MEDIA BASED ON DIAMOND TOUCH CARDBOARD WITH THINK PAIR SHARE MODEL AND STUDENT RESPONS ON EXCRETORY SYSTEM MATERIAL ]]>
<![CDATA[Khumaeroh, Mega Siti]]>;
<![CDATA[Ratnasari, Jujun]]>;
<![CDATA[Ramdhan, Billyardi]]>
<![CDATA[ Journal of Biology Education Vol 8 No 2 (2019): August 2019 ]]>
Publisher : <![CDATA[FMIPA UNNES ]]>
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DOI: 10.15294/jbe.v8i2.30642
<![CDATA[This study aims to reseach and develop the use of Diamond Touch media with think Pair share models. The research held at Pondok Modern Assalam Putri, Sukabumi with 31 student. The feasibility of the media used and evaluated by media expert and small-scale trials, Diamond touch is a medium that can be used as a medium to achieve goals material in learning Biology, formal and non-formal education. The elements contained in Diamond Touch media are (1) learning messages or core material (2) cardboard tools for learning aids. The results of this study that Diamond touch media can be integrated with learning models namely Think Pair Share so that the learning process is not boring and Diamond touch media is very valid for use in learning. Analysis of validity test data obtained through questionnaires was performed using quantitative data processing formulas]]>
<![CDATA[The Effect Of Advance Organizer Assisted By The Project To Student’s Generic Life Skills In The Material Of The Human Excretion System ]]>
<![CDATA[Dessy Nurjanah]]>;
<![CDATA[Jujun Ratnasari]]>;
<![CDATA[Suhendar Suhendar]]>
<![CDATA[ ATRIUM PENDIDIKAN BIOLOGI Vol 4, No 2 (2019): Atrium Pendidikan Biologi ]]>
Publisher : <![CDATA[Universitas Negeri Padang ]]>
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DOI: 10.24036/apb.v4i2.5931
<![CDATA[This research is based on the problems the generic life skills of students who are still low. The effort that can be done is to apply the Advanced Organizer learning model assisted by project in the excretion system material at SMAN 3 Sukabumi. The purpose of this research is to find out the influence of Advance Organizer learning model assisted by project on generic life skills of students of SMAN 3 Sukabumi. The type of research used quasi-experiment with Nonequivalent control group design. In this study the sampling technique used purposive sampling. The samples in this study were grades XI8 and XI5. The instruments used test questions, attitude scale, observation sheet and response questionnaire. The results of data analysis showed that the average N-gain test scores of experimental class 0.77 and a control class 0.47. The average attitude scale of the experimental class 80% and the control class 83%. The average observation sheet of the experimental class 91% and the control class 73%. The average response questionnaire of the experimental class to material 89%, to learning model 83% and to generic life skills 84%. Based on the prerequisite test data the results of the study were normally distributed and homogeneous. The result of research by hypothesis testing with the Z-test show Zhitung=8 > ZTabel=1,96 then H0 is rejected and H1 is accepted. The conclusion is that the Advanced Organizer learning model assisted by projects has an influence on students' generic life skills.Keywords: Advanced Organizer assisted by the project, generic life skills]]>
<![CDATA[Misconception Analysis Of Students With The Four-Tier Test Through Tree Thinking On Animaly Classification Concept ]]>
<![CDATA[Nida Anisa]]>;
<![CDATA[Aa Juhanda]]>;
<![CDATA[Jujun Ratnasari]]>
<![CDATA[ Jurnal Pelita Pendidikan Vol 9, No 2 (2021): Jurnal Pelita Pendidikan ]]>
Publisher : <![CDATA[Universitas Negeri Medan ]]>
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DOI: 10.24114/jpp.v9i2.25339
<![CDATA[Misconceptions are knowledge possessed by individuals/students that are irrelevant or not in accordance with existing concepts. This can affect the learning process about scientific concepts. The purpose of this study was to determine the misconceptions students had in the Animalia classification concept. The method used in this research is quantitative descriptive method. This research was conducted on one of the MA in Sukabumi district. The research subjects were 50 students of class X A and X B. The instrument used was a four-tier test (four-level diagnostic test) which was combined with a thinking tree and consisted of 15 questions. The results showed that students who understood the concept (PK) in the Animalia classification material had a percentage value of 23%. Students who do not understand the concept (TPK) have a percentage value of 7%. Students who understand some of the concepts (PS) have a percentage value of 21%. Meanwhile, students who experienced misconceptions (M) in the Animalia classification material had the highest percentage value when compared to other categories, namely 49%. Based on these data, it can be seen that the misconceptions that students have on the Animalia classification concept fall into the medium category.]]>
<![CDATA[PENGARUH PENDEKATAN PEMBELAJARAN SOCIOSCIENTIFIC ISSUES TERHADAP KEMAMPUAN BERPIKIR KREATIF PESERTA DIDIK ]]>
<![CDATA[Widia Rahmawati]]>;
<![CDATA[Jujun Ratnasari]]>;
<![CDATA[Suhendar Suhendar]]>
<![CDATA[ Jurnal Pelita Pendidikan Vol 6, No 2 (2018): Jurnal Pelita Pendidikan ]]>
Publisher : <![CDATA[Universitas Negeri Medan ]]>
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DOI: 10.24114/jpp.v6i2.10150
<![CDATA[The purpose of this study is to examine the effect of Socioscientific Issues learning approach to improving students' creative thinking ability. Learning with the Socioscintific Issues approach needs to be trained because it not only develops creative thinking skills, but also other abilities can be developed such as critical thinking skills, decision-making and arguing ability. The research method that will be used is quasi experiment with Design Nonequivalent Control Group. This research was conducted at State Junior High School 6 Sukabumi with research population that is class VII (Seven). The sampling technique used is Purposing Sampling. Indicators of creative thinking that is sensitivity, thinking smoothly, thinking flexible, original thinking and thinking detailing. The results showed that the average value of N-gain of the experimental class was 0.56 higher than the control class of 0.44. The results of the z test show that the data produced in accordance with the criteria is zhitung = 3.177> ztabel = 1.998 with a trust level of 0.05 (5%), meaning H0 is rejected and H1 accepted, it means that the Socioscientific Issues learning approach influences the creative thinking ability of learners water pollution material. The response of learners to the learning approach Socioscientific Issue gave a positive response on the approach of learning approaches Socioscientific Issues.Keywords: Creative Thinking, Socioscientific Issues.]]>
<![CDATA[PENGARUH PEMBERIAN ELISITOR EKSTRAK KHAMIR Saccharomyces cerevisiae Hansen TERHADAP KANDUNGAN AJMALISIN DALAM KULTUR AGREGAT SEL Catharanthus roseus (L.) G. Don. ]]>
<![CDATA[Jujun Ratnasari]]>;
<![CDATA[Arbayah H Siregar]]>;
<![CDATA[Rizkita RE]]>
<![CDATA[ BERITA BIOLOGI Vol 5, No 4 (2001) ]]>
Publisher : <![CDATA[Research Center for Biology-Indonesian Institute of Sciences ]]>
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DOI: 10.14203/beritabiologi.v5i4.1118
<![CDATA[There were many ways to obtain high production of secondary metabolites in plant tissue culture; among the other is elicitation.An experiment to study the effect of elicitor derived from Saccharomyces cerevisiae Hansen extract on ajmalicine content in cell aggregates culture of Catharanthus roseus (L.) G.Don, has been conducted. The media used for callus induction and cell aggregates culture were Zenk 6 5(1977) with addition of 2.5 x 10" M Naphthalene Acetic Acid (NAA) and 10' M 6-Benzilaminopurine (BAP).The cell aggregates culturewas subcultured three times and then elicitated with elicitor derived from autoclaved 5.cerevisiae extract at concentrations 0.5, 1.0, 2.5%,and harvested at 18, 24,and 36 hours after elicitation.The ajmalicine was analyzed qualitatively and quantitatively by using High Pressure Liquid Chromatography (HPLC) connected to chromatopack CR-7A Plus. The cell aggregates of C. roseus culture produced ajmalicine both in the cells and the media.The result of elicitation showed that ajmalicine content was influenced significantly by concentration and harvesting time. The highest ajmalicine content in the cell aggregates was 25.288 ± 0.102 jig/g dw, whilst that in media was 524.600 ± 0.566 \\ML. The optimum concentration of S. cerevisiae extract was 0.5%, and the best harvesting time was 24 hours.]]>
<![CDATA[PEMBELAJARAN BIOLOGI DENGAN METODE FREQUENT PRACTICAL WORK TERHADAP TINGKAT SELF EFFICACY DAN HASIL BELAJAR KOGNITIF SISWA SMA ]]>
<![CDATA[Risela Karismania]]>;
<![CDATA[Jujun Ratnasari]]>;
<![CDATA[Gina Nuranti]]>
<![CDATA[ BIOEDUKASI (Jurnal Pendidikan Biologi) Vol 13, No 1 (2022): BIOEDUKASI, MEI 2022 ]]>
Publisher : <![CDATA[UNIVERSITAS MUHAMMADIYAH METRO ]]>
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DOI: 10.24127/bioedukasi.v13i1.5299
<![CDATA[This study aims to determine the level of effectiveness of the Frequent Practical Work learning method on the level of Self Efficacy and cognitive learning outcomes of high school students. Frequent Practical Work or repetitive work practices are carried out in various ways. In this study, practical work refers to the teaching and learning activities of biology. This research was conducted in one of the senior high schools in the city of Sukabumi with a research sample of 24 students in the control class and 26 students in the experimental class. In the control, class learning is done using conventional methods while in the experimental class learning is done using the Frequent Practical Work learning method. The results show that the level of effectiveness of the Frequent Practical Work learning method in the experimental class is quite effective for learning. In the experimental class, the level of Self Efficacy is in the high category, while in the control class the level of Self Efficacy is in the medium category. In the experimental class, the students' cognitive learning outcomes have a higher class average than in the control class.Kata Kunci : Hasil belajar Kognitif, Frequent Practical Work, Self Efficacy,]]>
<![CDATA[Pemanfaatan Makroalga oleh Masyarakat Binuangeun Lebak Banten ]]>
<![CDATA[Billyardi Ramdhan]]>;
<![CDATA[Suhendar]]>;
<![CDATA[Jujun Ratnasari]]>
<![CDATA[ Journal of Tropical Ethnobiology 2021: Prosiding Seminar Nasional PMEI V 2020 ]]>
Publisher : <![CDATA[The Ethnobiological Society of Indonesia ]]>
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<![CDATA[Binuangeun Beach, Lebak Regency, Banten Province, is one of the south coasts of Java which is still natural and virgin. This condition holds biological potential, one of which is macroalgae. Coastal community interactions with the potential of algae is part of everyday life. This article aims to reveal the potential of macroalgae found on the coast based on the knowledge of the people. Efforts to collect information/ emic from the community are carried out by collecting specimens using the Quadrant Transect method for sampling macroalgae species, then Plant Interviews are carried out to record community emics about the use of macroalgae found in the field. The Plant Interview was conducted in a structured manner. Interviews were conducted with two key informants from the local community. From the observations obtained 11 species. Among the beneficial species, it is noted that some of the species used are Ulva lactuca which can be used as food/ lalab; Turbinaria ornata is used as a trading / traded commodity, Sargassum sp as a trading/ traded commodity, foodstuff, and medicine; Halimeda tuna is used as paint and chalk and Enteromorpha compress is consumed. From these data it can be concluded that Binuangen Beach Banten has the potential to be developed into a source of additional nutrition, commercial and medicinal properties.]]>
<![CDATA[The Effect of Collaborative Murder Learning Model on Cognitive Ability and Learning Motivation ]]>
<![CDATA[Jujun Ratnasari]]>
<![CDATA[ Jurnal Report of Biological Education Vol 1 No 1 (2020) ]]>
Publisher : <![CDATA[Program Studi Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Muhammadiyah Sukabumi ]]>
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DOI: 10.37150/rebion.v1i1.812
<![CDATA[Research with this quasi-experimental method aims to determine the influence of collaborative learning models of Mood, Understand, Recall, Detect, Elaborate, and Review (MURDER) on the cognitive abilities and motivational learning of learners. The instrument used to measure the cognitive abilities in the form of written tests refers to the Bloom's taxonomy, while the instrument for measuring learning motivation are motivation questionnaires. Learning cognitive ability data in the form of increase in Pretest and Posttest i.e. the normalization Gain (N-Gain) tested statistically using Wilcoxon test. Wilcoxon test results at a significance level α = 0.05 with 95% confidence level indicates calculated W of 0, while the table W (0.05) (30) amounted to 137. It can be concluded that Ho is rejected meaning that the cognitive abilities in the experiment class and the control class differ significantly. Analysis of learning motivation data was taken from a questionnaire with a Likert scale 1-4. The results of the t test calculation at the significance level α = 0.05 95% confidence level showed calculated t of 0.75, and table t (0.975) (59) of 2,001. Because the t 0.975 (59) < t < t 0.975 (59), it can be concluded that Ho is accepted meaning there is no significant difference in students' learning motivation in the experimental class and the control class. In this study the MURDER collaborative learning model has an effect on cognitive ability, but does not affect learning motivation of students.]]>
<![CDATA[Profile of Science Literacy of Grade 10 Students Using Computer-Supported Collaborative Learning (CSCL) Model ]]>
<![CDATA[Wita Wulan Januaresty]]>;
<![CDATA[Sistiana Windyariani]]>;
<![CDATA[Jujun Ratnasari]]>
<![CDATA[ Bioedukasi: Jurnal Pendidikan Biologi Vol 14, No 2 (2021): Bioedukasi: Jurnal Pendidikan Biologi ]]>
Publisher : <![CDATA[Department of Biology Education Faculty of Teacher Training and Education Sebelas Maret Un ]]>
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DOI: 10.20961/bioedukasi-uns.v14i2.51528
<![CDATA[This study aims to determine the effect of the CSCL model on science literacy (SL). SL is considered as the abilities to use science knowledge to solve the science problem by utilizing the critical thinking skills. The quasi-experimental with a non-equivalent group design was applied as the research method. Subjects of this research were grade 10 students (N=50). Different tests were carried out to determine the existence of science literacy. There are 3 aspects of knowledge assessed in SL skills, i.e., content, procedural, and epistemic knowledge. The instruments used was a 15 questions of science literacy consisting of 5 content knowledge, 5 procedural, 5 epistemic questions, and an assessment of interest in SL. The results showed the average of content knowledge of experimental class was 76.92% or in a high category, and control class was 73.33% or in moderate category. The average of procedural knowledge of the experimental class was 66.92% and the control class was 64.99%, or both were moderate. And the average of epistemic knowledge of the experimental class was 64.61% and the control class was 60.99% or both moderate. The assessment of attitudes towards SL aims to give an idea that students have an interest in the components of SL attitudes.]]>
