Article Per Year (5 Year)
p-Index From 2021 - 2026
1.332
P-Index
This Author published in this journals
All Journal Jurnal Pelita Pendidikan JURNAL PENELITIAN SAINTIKA JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Pendidikan Matematika dan Sains BIOEDUSAINS: Jurnal Pendidikan Biologi dan Sains Jurnal Pembelajaran dan Biologi Nukleus JIFI (Jurnal Ilmiah Farmasi Imelda) Biocaster : Jurnal Kajian Biologi Biodik: Jurnal Ilmiah Pendidikan Biologi
Martina Restuati
Department of Biology, State University of Medan
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Mathematics Medicine & Pharmacology Social Sciences

Published : 17 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 17 Documents
Search

 1   2 
Pengembangan Modul Pembelajaran Anatomi dan Fisiologi Manusia Berbasis Studi Kasus (Case Study) untuk Mahasiswa Prodi Pendidikan IPA UNIMED Ginting, Sri Enita; Silitonga, Melva; Restuati, Martina
BIOEDUSAINS:Jurnal Pendidikan Biologi dan Sains Vol. 8 No. 4 (2025): Bioedusains: Jurnal Pendidikan Biologi dan Sains
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/mvtb0e88

Abstract

This study aims to develop a case-based learning module on Human Anatomy and Physiology that is feasible for use by students of the Science Education Study Program at Universitas Negeri Medan (UNIMED). The research was conducted from January to June 2025 at the Faculty of Mathematics and Natural Sciences (FMIPA), UNIMED. The method used was research and development (R&D) with the MANTAP model level 1, which includes the stages of needs analysis, product development, and validation. The research subjects included lecturers of the Anatomy and Physiology course and students from the 2023 cohort of the Science Education Study Program at UNIMED. Data were collected through questionnaires and validation sheets, and analyzed both quantitatively and qualitatively. The results show that the developed module received an “excellent” rating from the subject matter expert (89.27), instructional design expert (92.25), and graphic design expert (86.80). It was also considered “highly practical” based on feedback from lecturers (92.16) and students, both in small groups (81.9) and larger groups (83.4). In conclusion, this case-based module is highly feasible and practical as a contextual teaching material to support the learning process of Science Education students at UNIMED.   Keywords: Anatomy, Physiology, Module, Development, Case Study
Uji Aktivitas Antibakteri Ekstrak Etanol Daun Sirih Cina (Peperomia pellucida) terhadap Bakteri Penyebab Jerawat (Propionibacterium acnes) Sihotang, Wahyu Frans; Restuati, Martina; Silitonga, Melva
Biocaster : Jurnal Kajian Biologi Vol. 5 No. 4 (2025): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v5i4.684

Abstract

This study aims to determine the mechanism of action, antibacterial activity, and effect of ethanol concentration of Chinese betel leaf extract (Peperomia pellucida) on the growth of Propionibacterium acnes. The method used was disc diffusion with 96% ethanol solvent as well as determination of the number of test bacteria through the cup counting method, with the absorbance value adjusted to the McFarland standard of 0.5. The concentration of the extracts tested was 10%, 20%, 30%, 40%, and 50%. The data was analyzed using the One Way ANOVA test with the help of SPSS. The results showed that the ethanol extract of betel leaves of china had antibacterial activity against Propionibacterium acnes, characterized by the formation of an inhibition zone. At 10% of the activity is moderate, while at the concentration of 20%, 30%, 40%, and 50% of the activity is moderate. Standard conformity tests show that McFarland Kit's standard solution (Himedia) has an absorbance value of approximately 0.08–0.1 at a wavelength of 625 nm. The suspension of the test bacteria that was diluted to the absorbance value resulted in a number of Propionibacterium acnes cells of 1.2 × 10^7 CFU/mL. This shows that the number of test bacterial cells used is not entirely the same as McFarland's standard solution of 0.5. Thus, the ethanol extract of betel leaves has the potential to be an antibacterial agent against Propionibacterium acnes.
Analisis Penerapan Model Pembelajaran Project-Based Learning pada Mata Kuliah Biokimia di Universitas Negeri Medan: (Analysis of the Application of Project-Based Learning Model in Biochemistry Courses at Medan State University) Winarsi, Deti; Syahputri, Winanda; Rahmawati , Aulia Endang; Diah, Mela Karsih Anin; Taradita, Mutia; Syakirah, Najla; Restuati, Martina; Pratiwi, Nanda
BIODIK Vol. 10 No. 4 (2024): Desember 2024
Publisher : Program Studi Pendidikan Biologi FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/biodik.v10i4.38612

Abstract

Project-based learning is one of the methods that supports the quality of education in Indonesia, which is regulated in Law No. 12 of 2012 concerning Higher Education. Project-based learning is learning that is charged to students to improve their critical thinking skills, solve problems, find solutions and grow communication skills. This learning is also useful for lecturers as teaching staff to improve their abilities and higher skills. This study aims to determine the level of achievement of the implementation of project-based learning in learning based on department policies. This study uses a mixed approach combining qualitative and quantitative approaches. The sample in this study is students who have experienced the application of the project-based learning model in the Biochemistry course class of 2022 Biology Education Study Program. Data collection uses observation sheets for the implementation of syntax, student perception questionnaires, interview sheets and critical thinking tests (pretest and posttest). The data obtained were analyzed by interactive analysis for qualitative and descriptive statistics of quantitative data using IBM SPSS Statistics 29. Abstrak. Pembelajaran project-based learning merupakan salah satu metode yang mendukung kualitas pendidikan di Indonesia, yang diatur dalam UU No. 12 Tahun 2012 tentang Pendidikan Tinggi. Penelitian ini bertujuan untuk mengetahui tingkat ketercapaian penerapan project-based learning dalam pembelajaran berdasarkan kebijakan jurusan. Penelitian ini menggunakan pendekatan campuran (mixed method) menggabungkan pendekatan kualitatif dan kuantitatif. Sampel dalam penelitian ini adalah mahasiswa yang telah mengalami penerapan model pembelajaran project-based learning dalam matakuliah Biokimia angkatan 2022 Prodi Pendidikan Biologi. Pengumpulan data menggunakan lembar observasi keterlaksanaan sintaks, kuisioner persepsi mahasiswa, lembar wawancara dan tes berpikir kritis (pretest dan posttest). Data yang diperoleh dianalisis secara analisis interaktif untuk kualitatif dan statistic deskriptif data kuantitatif menggunakan IBM SPSS Statistics 29. Hasil penelitian berupa penerapan model pembelajaran proyek (project based learning) pada mata kuliah Biokimia, hasil observasi menunjukkan rata-rata sebesar 82,40% (kategori sangat baik). Ditemukan juga kendala dalam penerapan model ini yaitu, keterbatasan mengelola waktu dan sumber daya yang tersedia untuk proyek tim, minimnya umpan balik, kompleksitas materi serta kurangnya variasi dalam integrasi teknologi.
THE VALIDITY OF GENERAL BIOLOGY LEARNING EQUIPMENT BASED ON CASE METHOD AND PROJECT BASED LEARNING Handayani, Dina; Restuati, Martina; Pratiwi, Nanda; Haniyyah, Ummu; Gultom, Rahmad H; Sanimah, Sanimah
Jurnal Pelita Pendidikan Vol. 12 No. 3 (2024): Jurnal Pelita Pendidikan
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpp.v12i3.61659

Abstract

This research is a type of development research. The development method applied follows the define, design, and development Model. The aim of this study is to produce a valid general biology learning equipment based on case method and project based learning. In this research, the completed general biology learning equipment design was validated by content experts and language experts. Based on the validation results from content experts, the tool achieved a validation percentage of 86.65%, categorized as highly valid. The language experts validated the equipment with a percentage of 81.25%, also categorized as highly valid. Therefore, it can be concluded that the developed general biology learning equipment is suitable for testing by instructors of general biology courses.
PENGARUH PEMBELAHAN MELINTANG PADA BIJI MANGGIS GARCINIA MANGOSTANA L TERHADAP TOTIPOTENSI PERTUMBUHAN TUNAS Mellysa Barus, Ewi; Restuati, Martina
JIFI (Jurnal Ilmiah Farmasi Imelda) Vol. 1 No. 1 (2017): JIFI (Jurnal Ilmiah Farmasi Imelda)
Publisher : Universitas Imelda Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (285.721 KB)

Abstract

Garcinia mangostana L. merupakan salah satu spesies dari famili Guttiferae kaya senyawa dari golongan xanthon.Manggis memiliki juvenil yang lama. Salah satu metode yang dapat memecahkan masalah dalam perbanyakan tanaman manggis dalam jumlah yang banyak, bisa sepanjang musim dan menghasilkan tanaman yang seragam yaitu kultur in vitro. Tujuan dari penelitian ini adalah untuk menentukan konsentrasi terbaik antara Benzil Amino Purin (BAP) dan madu terhadap induksi tunas dari eksplan biji manggis yang belah tiga melintang secara in vitro. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan perlakuan BAP (0;3 mg/L) dan madu (3;6 mg/L) pada media MS (Murashige-Skoog) dengan pengamatan 70 hari setelah tanam (hst). Hasil penelitian menunjukkan bahwa pemberian BAP maupun madu mampu meningkatkan pembentukan tunas. Pemberian BAP dan madu berpengaruh nyata terhadap persentase terbentuknya tunas, waktu muncul tunas, jumlah tunas dan panjang tunas. Jumlah tunas terbanyak terdapat pada perlakuan 3 mg/L BAP sebanyak 20 tunas per biji. Kombinasi perlakuan dengan penambahan 3 mg/L BAP + 3 ml/L madu menghasilkan persentase terbentuk tunas tertinggi (100%); waktu muncul tunas tercepat 12,75 hst; dan panjang tunas tertinggi 1,86 cm. Pada penelitian ini telah berhasil menginduksi tunas dari biji manggis yang dibelah tiga melintang asal Bengkalis dengan penambahan BAP dan madu.
PENGARUH MEDIA KULTUR PADA PLANLET KENTANG Solanum Tuberosum L TERHADAP TOTIPOTENSI PERTUMBUHAN TUNAS Mellysa Barus, Ewi; Restuati, Martina
JIFI (Jurnal Ilmiah Farmasi Imelda) Vol. 1 No. 2 (2018): JIFI (Jurnal Ilmiah Farmasi Imelda)
Publisher : Universitas Imelda Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (423.954 KB)

Abstract

Kebutuhan tanaman kentang semakin meningkat namun produksinya semakin menurun. Produktifitas kentang sangat tergantung kepada kualitas benih kentang yang bebas patogen. Penggunaan manitol sebagai osmoregulator terhadap benih kentang dapat dilakukan secara in vitro yang mampu mendapatkan kultur yang bebas virus serta memiliki potensi yang besar untuk konservasi plasma nutfah. Penelitian ini bertujuan mengetahui interaksi antara konsentrasi manitol dan penggunaan jenis bagian eksplan yang menghambat pertumbuhan planlet kentang sehingga dapat disimpan dalam waktu lama. Penelitian dilaksanakan bulan Januari sampai bulan Mei 2017 di Laboratorium Mikropropagasi Balai Bioteknologi.. Penelitian menggunakan metode Rancangan Kelompok Lengkap Teracak (RKLT) faktorial. Faktor pertama perlakuan media MS + Manitol pada taraf 0, 20, 40, 60, 80, 100 dan 120 g.L-1. Faktor kedua penggunaan jenis bagian eksplan pucuk dan buku ke-2. Pemberian perlakuan konsentrasi manitol 60 g.L-1 memberikan laju penghambatan yang optimum dengan menekan pertumbuhan tinggi planlet 58.77%; jumlah daun 60.77%; panjang akar 20.39%; dengan masa penyimpanan 3 bulan.
HUBUNGAN KONSEP DIRI DENGAN KEMAMPUAN BERPIKIR KRITIS SISWA KELAS X MIA PADA MATA PELAJARAN BIOLOGI PROGRAM LINTAS MINAT Mellysa Barus, Ewi; Restuati, Martina; Gultom, Tumiur
JIFI (Jurnal Ilmiah Farmasi Imelda) Vol. 2 No. 2 (2019): JIFI (Jurnal Ilmiah Farmasi Imelda)
Publisher : Universitas Imelda Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (236.795 KB)

Abstract

Penelitian ini bertujuan untuk mengetahui hubungan antara konsep diri (X1) dengan kemampuan berpikir kritis siswa kelas X Matematika dan Ilmu Alam (MIA) pada mata pelajaran biologi program lintas minat. Penelitian ini merupakan penelitian yang menggunakan deskriptif studi korelasional. Sampel penelitian ini diambil dengan teknik total sampling yaitu seluruh siswa kelas X MIA SMA Negeri 1 Galang yang terdiri dari 4 kelas dengan jumlah siswa sebanyak 112 orang. Teknik pengumpulan data berupa tes kemampuan berpikir kritis, dan skala minat. Teknik analisis data yang digunakan adalah dengan menggunakan rumus korelasi dan regresi. Hasil penelitian disimpulkan bahwa terdapat hubungan minat dengan kemampuan berpikir kritis dengan nilai korelasi sebesar 0,435 persamaan regresi ?= 43,339 + 0,505X1.
Co-Authors Ashar Hasairin Asphani, Fitriatul Diah, Mela Karsih Anin Ginting, Sri Enita Gultom, Endang Sulistyarini Gultom, Rahmad H Handayani, Dina Haniyyah, Ummu Harahap, Ashar Hasairin Hasruddin Jasmidi Jasmidi Lasrini, Lasrini Mellysa Barus, Ewi Melva Silitonga Nanda Pratiwi Rahmawati , Aulia Endang Sanimah Sihotang, Wahyu Frans Simanullang, Desvica Sinaga, Rahmat Sapri Hidayat Syahputri, Winanda Syakirah, Najla Taradita, Mutia Tri Agustina, Tri Tumiur Gultom Winarsi, Deti