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All Journal JPS Unimus Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Bio-Lectura Jurnal Agronomi Tanaman Tropika (JUATIKA) Unri Conference Series: Community Engagement BIOGENESIS Journal of Educational Sciences SAINTIFIKA Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education)
Zulfarina Zulfarina
Department Of Education Biology, FKIP, Universitas Riau, Pekanbaru 28000, Riau Sumatera, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Education Environmental Science Health Professions Immunology & microbiology Library & Information Science Mathematics Medicine & Pharmacology Physics Social Sciences Other

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Analisis Miskonsepsi Mahasiswa Pada Konsep Genetika Menggunakan Instrumen Four Tier Diagnostic Test Sri Wulandari; Amelia Gusmalini*; Zulfarina Zulfarina
Jurnal Pendidikan Sains Indonesia Vol 9, No 4 (2021): OCTOBER 2021
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (510.715 KB) | DOI: 10.24815/jpsi.v9i4.21153

Abstract

Genetic has a broad and complicated topic and abstract material considered difficult by students. The inability to connect and construct between genetic concepts properly causes misconceptions. Therefore, the purpose of this study was to analyze students' misconceptions on the concept of genetics using a four-tier diagnostic test. 91 students from the Faculty of Education, Department of Biology, University of Riau were used as samples. The method was descriptive quantitative with a survey research model. The four-tier diagnostic test instrument consists of four levels: the first stage uses multiple-choice questions with four distractors questions and one key answer; the second level is the level of student confidence to choose the answers; the third level is the students' reasons for answering the questions; the fourth level is the level of student confidence to choose reasons. The number of questions tested was 20 questions with six sub-concepts. Confidence Discrimination Quotient (CDQ) and four-tier diagnostic test were used to analyze data on misconceptions and interpretation of student answer patterns. Students experienced misconceptions on 19 answer questions, 13 reason questions, and 16 answer and reason questions. The results of the four-tier diagnostic test described that the category of misconceptions was 65.21%, not understanding the concept was 24.53% and understanding the concept was 10.34%. From the six sub-concepts tested, the highest score of misconception was found in genetic material (75.1%) and the lowest was found in the scope of genetics (44.4%). On average, the students had medium and high categories of misconception
The Impact of Peatland Fires on Cellulolytic Microbial Populations in Several Landuses Novian Hendro; Zulfarina Zulfarina; Nurul Qomar
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol 5 No 2 (2023): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 5 No. 2 Juli 2023
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v5i2.829

Abstract

Studies on the impact of peatland fires on agricultural land, especially oil palm, and rubber, are still limited. This study aims to calculate the total population of cellulolytic bacteria and determine the activity of cellulolytic enzymes qualitatively in each microbial isolate found and to determine the level of peatland degradation after the fire. The research was conducted by survey in the field. The research location is in the long jungle village of Tambang Subdistrict, Kampar Regency. At the same time, the laboratory analysis was carried out in the Pathology, Entomology, and Microbiology Laboratory, Faculty of Agriculture and Animal Husbandry, Sultan Syarif Kasim Riau University. Determination of sample points using the purposive sampling method, which is to choose a location per the study's objectives at 4 locations. The first location is oil palm land that is not burnt, the second is burning oil palm land, the third is unburned rubber land, and the fourth is burned rubber land. Each location was repeated three times to obtain 12 sample points for observation. Furthermore, at each observation sample point, two soil depths were observed, 0-15 cm and 15-30 cm. The total population of cellulolytic bacteria in oil palm and rubber plantations that were burned and not burned with different soil depths ranged from 5.3 x 109 cfu / g soil to 14.0 x 109 cfu / g soil. The clear zone ratio (Z / K) of 8 cellulolytic bacterial isolates observed was high criteria, namely> 1.76 (100%). The highest Z / K ratio was produced by bacterial isolates originating from burnt rubber plantations at a soil depth of 0-15 cm, namely 5.25.
Co-Authors Amelia Gusmalini* DWI ANDREAS SANTOSA Egi Purnama Evi Suryawati Faradina Afida Hendra Taufik Ice Trisnawati Imam Mahadi Iman Rusmana M Rahmad Mas’ud Mas’ud Megawati Anggraini Molandia Widi Agustin NISA RACHMANIA MUBARIK Novian Hendro Nursal Nursal Nurul Qomar Riki Apriyandi Putra Riki Apriyandi Putra Rita Anugerah Roza Linda Sri Wulandari Syarifah Hanum Hasibuan Teja Pratama Putra Wansyafii Wansyafii Wasisto Utomo Yenni Lestari Yoana Ulitua Panggabean Yuslim Fauziah Yustina Yustina