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All Journal JBIO: jurnal biosains (the journal of biosciences) Jurnal Pelita Pendidikan Jurnal Pengabdian UntukMu NegeRI
Puji Prastowo
Jurusan Biologi-Universitas Negeri Medan, Jln. Williem Iskandar Psr. V Medan Estate
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Economics, Econometrics & Finance Education Immunology & microbiology Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Social Sciences

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Uji Toksisitas Ekstrak Etanol Daun Tanaman Tembakau (Nicotiana tabacum L.) Puji Prastowo; Selvia Dewi Pohan; Khairiza Lubis
JBIO: jurnal biosains (the journal of biosciences) Vol 2, No 1 (2016): Jurnal Biosains
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jbio.v2i1.5209

Abstract

Tobacco (Nicotiana tabacum L.) was a popular plant, usually used as cigarette material, traditional medicine, chewy tobacco and natural insecticide. This study aims to investigate toxicity effects of tobacco to mice (Mus musculus). The study had been done from March to July 2015 in Plant Physiology Laboratory of Mathematic and Natural Sciences Unimed and Phatology Laboratory USU. The study used male mice as the animal test. Twenty-five mices were divided in to 5 groups. One control group and four groups were given the ethanolic extracts of tobacco in four doses 10%; 15%; 20%; dan 25% orally. Evaluation of toxic effects was 24 hours until 3 days after administration. Evaluation included physical and physiological adverse, behaviour changes, and histopathologycal adverse of liver and kidney. According to the results of study, ethanolic extract of tobacco made a systemic toxicity. Most of doses (except control) caused acute toxicity symptoms and immediately death to the tested animals. It affected mices in physic, behaviour and anatomy. The toxic symptoms were uncontrolable movement, aggressivity, tail abnormality, coordination damages, pupil extention, and refflects damages. Another effects were gastric, intestinal and testis inflammations. The liver and kidney were highly susceptible to toxicant. Histopathologycal examination showed that toxic affected congestion and necrosis in liver and kidney. Keywords: ethanol extract, toxicity, tobacco, histopathology, mice
UJI TOKSISITAS EKSTRAK SRIKAYA (Annona squamosa Linn.) PADA HEWAN MENCIT (Mus musculus) Selvia Dewi Pohan; Puji Prastowo; Khairiza Lubis
JBIO: jurnal biosains (the journal of biosciences) Vol 2, No 2 (2016): Jurnal Biosains
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jbio.v2i2.4218

Abstract

Tanaman srikaya (Annona squamosa Linn.) adalah salah satu tumbuhan dari famili Annonaceae yang telah diketahui memiliki berbagai macam efek sebagai obat, insektisida, antiovulatory, dan abortifacient. Tanaman ini mengandung bermacam-macam senyawa aktif seperti squamosin, asetogenin, alkaloid, flavonoid, terpenoid, tannin dan sebagainya. Squamosin dan asetogenin merupakan senyawa aktif yang dapat berfungsi sebagai insektisida. Penelitian ini bertujuan untuk menguji toksisitas (tingkat/pengaruh racun) tanaman srikaya dengan hewan uji mencit putih. Penelitian dilakukan dari bulan Maret sampai dengan April 2015 di Laboratorium Fisiologi Tumbuhan Jurusan Biologi FMIPA Unimed dan Laboratorium Patologi Fakultas Kedokteran USU. Penelitian ini adalah penelitian deskriptif-eksperimental, dimana akan diamati efek racun dari ekstrak etanol daun srikaya terhadap mencit. Efek racun diuji melalui pengamatan terhadap fisik, tingkah laku dan histopatologi hati dan ginjal mencit. Perlakuan ekstrak terdiri dari dosis 0,404 g/kg berat badan (bb) ; 0,705 g/kg bb; 1 g/kg bb; dan 1,333 g/kg bb, dimana pada masing-masing perlakuan terdapat 5 hewan uji. Berdasarkan hasil penelitian, diketahui bahwa setelah pemberian ekstrak terlihat adanya gejala-gejala keracunan dan kematian pada hewan uji. Gejala yang diamati berupa perubahan aktivitas motorik, gangguan koordinasi, perubahan refleks dan akhirnya mati. Ekstrak daun srikaya dengan dosis 1 g/kg bb dan 1,333 g/kg bb menyebabkan kematian hewan uji tertinggi dengan rata-rata waktu kematian secara berturut-turut yaitu 30 menit dan 36 menit. Hasil pemeriksaan histopatologi hati hewan uji menunjukkan bahwa ekstrak daun srikaya menyebabkan nekrosis dan kongesti hampir pada seluruh perlakuan. Sedangkan hasil pemeriksaan histopatologi ginjal hewan uji menunjukkan bahwa ekstrak daun srikaya menyebabkan kongesti. Kata kunci: ekstrak etanol, srikaya, efek, toksisitas, fisik, tingkah laku, histopatologi, mencit
Diversity Bird in Brackish Marsh Muara Tapus Subdistrict Manduamas District Center of Tapanuli Province North Sumatera Anisa Zuhalmi; Puji Prastowo
JBIO: jurnal biosains (the journal of biosciences) Vol 1, No 3 (2015): Jurnal Biosains
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jbio.v1i3.2932

Abstract

The purposeof this research  is to knowdiversity, abundance, dominance and  distribution pattern of  bird in brackish marsh Muara Tapus Subdistrict Manduamas District Center of Tapanuli. This research was done from February 2015 until April2015. Determination of the station is based on the environmental condition. Total of place observation is 5 places. Every place consist of 4 point with distance 50 m of point accompany. Sampling by concentration point method that is to observe and to take the picture of bird which in every point observation with distance 25 metre for 30 minutes. Time of take sample from 07.00 am – 10.00 am and 04.00 pm – 06.00 pm. The result of this research, found there was 6 orders, 6 family and 8 spesies of birds. Diversity of birds was 0.879, and belonging to the low diversity. The highest abundance of birds was Dendrocygna javanica as many as 110 individual. Average of dominance was 0.512 and belonging to the dominance is moderate. The distribution pattern of birds found in the category of the cluster to 8 species.   Keywords: diversity, bird, brackish marsh
Perbedaan Hasil Belajar Siswa yang Diajar Menggunakan Strategi Pembelajaran Aktif Tipe Index Card Match dengan Card Sort pada Materi Sistem Ekskresi Manusia di SMA Negeri 1 Binjai Diana Puspita; Puji Prastowo
Jurnal Pelita Pendidikan Vol 6, No 3 (2018): Jurnal Pelita Pendidikan
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpp.v6i3.10778

Abstract

Penelitian ini bertujuan untuk mengetahui perbedaan hasil belajar siswa yang diajar menggunakan strategi pembelajaran aktif tipe Index Card Match dengan Card Sort pada materi sistem ekskresi manusia di kelas XI IPA SMA Negeri 1 Binjai Kabupaten Langkat tahun pembelajaran 2015/2016. Jenis penelitian ini adalah eksperimen semu dan rancangan penelitian yang digunakan adalah “Only Post-test Group Design”. Populasi penelitian yaitu seluruh siswa kelas XI IPA. Sampel penelitian diambil secara random sampling (sampel acak) yang berjumlah 86 orang terdiri dari 2 kelas.  Kelas XI IPA 3 diajar menggunakan strategi pembelajaran aktif tipe Index Card Match dan kelas XI IPA 2 diajar menggunakan strategi pembelajaran aktif tipe Card Sort. Hasil penelitian menunjukkan bahwa hasil belajar siswa yang diajar menggunakan Index Card Match (81,04±9,42) lebih tinggi dari hasil belajar siswa yang diajar dengan Card Sort (75,81±9,99). Hipotesis menggunakan uji t menunjukkan bahwa hasil tersebut berbeda secara signifikan pada taraf kepercayaan .Kata Kunci: Hasil Belajar Siswa, Index Card Match, Card Sort
ANALISIS KESESUAIAN LEMBAR KERJA PESERTA DIDIK (LKPD) BIOLOGI KELAS X YANG DIGUNAKAN MAN RANTAUPRAPAT KABUPATEN LABUHAN BATU Nurul Azmi; Puji Prastowo; Maslena Maslena
Jurnal Pelita Pendidikan Vol 6, No 2 (2018): Jurnal Pelita Pendidikan
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpp.v6i2.10140

Abstract

This study aims to determine the feasibility of Student Work Sheet (LKPD) class X used in MAN Rantauprapat, Labuhan Batu District. Feasibility based on content, construction, technical presentation, and kegrafikan. This research is descriptive research, using quantitative data. Data analysis is done by calculating the percentage of Components component of Student Work Sheet (LKPD). The result of the research indicates that the workspace of Student (LKPD) used in class X MAN Rantauprapat have a high level of conformity and in accordance with standard of content, technical, construction and kegrafikan set by BSNP. Obtained percentage average score of 90.16%., 97.04% detail details on content feasibility aspects, 85% on construction aspects, 93.32% on technical aspects and 85.29% on aspects of kegrafikan. Based on the principal matter Prokaryotes obtained the highest average score (92.12%), while the lowest average score was obtained on Virus (87.92%) subject matter. This indicates that LKPD Biology which is used X MAN MANUFACTURE class can be feasible to use.Keywords: LKPD, feasibility of content, construction, technical and graphics
ANTUSIASME BELAJAR SISWA KELAS X ILMU PENGETAHUAN BAHASA PADA LINTAS MINAT BIOLOGI DI MAN 2 MODEL MEDAN Achmad Sulu Kurniawan; Puji Prastowo
Jurnal Pelita Pendidikan Vol 5, No 1 (2017): Jurnal Pelita Pendidikan
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpp.v5i1.8451

Abstract

Program lintas minat pada Kurikulum 2013 merupakan program dan kebijakan baru dariPemerintah. Program lintas minat menuntut peserta didik untuk mempelajari mata pelajaran yang tidakada pada program peminatan yang diambilnya dengan alokasi waktu belajar yang terbatas. Salah satufaktor penentu keberhasilan belajar siswa adalah antusiasme belajar siswa dalam mengikuti pelajaran.Penelitian ini bertujuan untuk mengetahui tingkat antusiasme belajar siswa kelas X Program PeminatanIPB (Ilmu Pengetahuan Bahasa) di MAN 2 Model Medan Tahun Pembelajaran 2016/2017 pada matapelajaran lintas minat biologi. Sampel penelitian terdiri dari 70 orang dan pengambilan sampel dilakukandengan teknik total sampling. Jenis penelitian adalah deskriptif servei dengan beberapa metode, yaitumetode angket sebagai instrumen untuk memperoleh data utama dan metode observasi, metodewawancara, dan metode dokumentasi sebagai instrumen untuk memperoleh data pendukung. Hasilpenelitian menunjukkan bahwa Siswa kelas X IPB (Ilmu Pengetahuan Bahasa) MAN 2 Model Medan padamata pelajaran program lintas minat biologi memiliki antusiasme belajar tinggi (70,57 %). Indikatorantusiasme belajar siswa tertinggi berasal dari indikator ulet dalam menghadapi kesulitan (85,21 %) danindikator antusiasme belajar siswa terendah berasal dari indikator senang bekerja mandiri (56,76 %).Kata kunci : antusiasme, biologi, lintas minat
ANALISIS KUALITAS SOAL UJIAN MATA PELAJARAN BIOLOGI DI SMA NEGERI 3 MEDAN TAHUN PEMBELAJARAN 2016/2017 Nelly Safrida Lubis; Puji Prastowo
Jurnal Pelita Pendidikan Vol 5, No 1 (2017): Jurnal Pelita Pendidikan
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpp.v5i1.8456

Abstract

Penelitian ini bertujuan untuk menganalisis sebaran soal ujian biologi berdasarkan ranahkognitif Taksonomi Bloom, persebaran soal ditinjau dari kompetensi dasar dan tingkat kualitas soalberdasarkan aspek konstruksi dan bahasa. Penelitian ini dilakukan di SMA Negeri 3 Medan TahunPembelajaran 2016/2017. Jenis penelitiannya adalah deskriptif survey. Populasi dalam penelitian ini ialahseluruh soal-soal UAS biologi semester ganjil pada setiap tingkatan kelas. Soal yang dianalisis masingmasingtingkatan kelas berjumlah 40 soal. Pengumpulan data dilakukan dengan cara mengumpulkandokumen soal untuk dianalisis berdasarkan ranah kognitif Taksonomi Bloom, persebaran soal ditinjaudari kompetensi dasar dan tingkat kualitas soal berdasarkan aspek konstruksi dan bahasa. Hasilpenelitian menunjukkan bahwa: rata-rata sebaran soal biologi pada ranah kognitif berdasarkanTaksonomi Bloom di SMA Negeri 3 Medan adalah 15,8% (C1); 32,5% (C2); 23,3% (C3); 13,3% (C4 dan C5);dan 1,6% (C6). Berdasarkan persebaran soal ujian biologi pada setiap tingkatan kelas ditinjau dariKompetensi Dasar masih belum merata. Sedangkan kualitas soal berdasarkan aspek konstruksidikategorikan sangat baik (73,3%) dan berdasarkan aspek bahasa termasuk kategori sangat baik(98,33%).Kata Kunci : Analisis , Kualitas, Ranah Kognitif, Kompetensi Dasar, Konstruksi, Bahasa
PERBEDAAN HASIL BELAJAR PERBEDAAN HASIL BELAJAR SISWA YANG DIAJAR MENGUNAKAN MODEL PEMBELAJARAN DISCOVERY LEARNING DENGAN PROBLEM BASED LEARNING PADA MATERI POKOK PENCEMARAN LINGKUNGAN KELAS X IPA SMA NEGERI 1 SUNGGAL Trioki Ningsih; Puji Prastowo
Jurnal Pelita Pendidikan Vol 5, No 3 (2017): Jurnal Pelita Pendidikan
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpp.v5i3.8859

Abstract

This research aimed to determine the differences between student’s learning outcomes that were taught by used discovery learning and problem based learning models on topic of environmental pollution in grade x SMA Negeri 1 Sunggal in academic year 2014/2015, The population of all of the students at grade X, that consisted of 4 classes and total of the students were 156 students. The samples were taken at random sampling of two classes, with details class X2 used discovery learning model and X1 used problem based learning model and each class numbered 39 students, so the number of samples in this study were 78 students. Type of research was experimental. The results showed that the learning outcomes of students who were taught by using discovery learning model was 82,05 ± 8,25, while the learning outcomes of students who were taught by using the problem based learning model was 76,41 ± 8,15. The result from the t-test at α = 0,05 with th 3,044; tt  1,995; and dk 76 refer that there was significant different from student’s learning outcomes who were taught using discovery learning model with problem based learning model on topic of environmental pollution in grade X SMA Negeri 1 Sunggal in academic year 2014/2015.Keywords : discovery learning, learning model, learning outcomes, problem based learning
MORFOMETRIC ANALYSIS OF MANGROVE CRAB (Scylla serrata) IN TANJUNG REJO VILLAGE, PERCUT SEI TUAN DISTRICT, DELI SERDANG REGENCY, NORTH SUMATERA Rifqah Amalia; Puji Prastowo
JBIO: jurnal biosains (the journal of biosciences) Vol 8, No 2 (2022): JBIO: jurnal biosains (the journal of biosciences)
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jbio.v8i2.36543

Abstract

This study aims to determine the character that contributes the most to the body weight of mud crab (Scylla serrata) and the morphometric differences between male and female mangrove crabs (Scylla serrata). The research was carried out in Tanjung Rejo Village, Percut Sei Tuan District, Deli Serdang Regency, North Sumatra from March to April 2022. This research is quantitative descriptive with explorative methods, namely direct sample collection or Hand sorting. The morphometric parameters observed were carapace width, carapace length, carapace height, optical groove widths, chela length, chela height and deep length. The analysis used is multiple linear regression with stepwise method and t test. The results of the study showed that the morphometric characters that contributed the most to body weight in male mud crabs were the length of the right chela (93%) and carapace length (94.1%), while in female mud crabs, carapace height (87%) and carapace width (91%) and there is a very significant difference between male and female mud crab morphometrics on the characters of optical groove widths, right chela length, right chela height, right chela deep length, left chela length, and chela height. on the left and deep length on the left. Meanwhile, significant characters were found in carapace width and carapace height. For carapace length characters showed no significant difference.
Pemberdayaan Petani Jagung dalam Mengolah Limbah Tongkol Jagung Empowerment of Corn Farmes in Processing Corn Cob Waste Sri Adelila Sari; Marini Damanik; Puji Prastowo; Muslim, Muslim; Makhrany Dalimunthe; Feri Yuni Asiyah Kabeakan; Hanisah Hasibuan
Jurnal Pengabdian UntukMu NegeRI Vol. 8 No. 2 (2024): Pengabdian Untuk Mu negeRI
Publisher : LPPM UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jpumri.v8i2.7491

Abstract

Corn cob waste is a problem faced by corn farmers who live in Amplas Village, Dusun I Tambak Rejo, Percut Sei Tuan District, Deli Serdang Regency. This community service project was aimed to provide knowledge and training to the community about processing corn cob waste into organic fertilizer. The people involved were corn farmers those who were named the Reformasi Jaya Farmers Group. The method used was the lecture method by presenting agricultural expert speakers to provide knowledge to farmer groups. Apart from that, training was carried out, where farmer groups were taught and trained about processing corn cobs so that they become organic fertilizer. The results of this activity showed that the farming community was very enthusiastic and enthusiastic. Their knowledge increased by showing that they understood how to prepare fertilizer from processed corn cobs. After the fertilizer was applied to the corn plants, within 5 weeks, it was found that the stems and leaves of the corn plants were growing well. This fertilizer production was also expected to be able to improve the standard of living of farming communities.
Co-Authors Achmad Sulu Kurniawan Anisa Zuhalmi Diana Puspita Feri Yuni Asiyah Kabeakan Hanisah Hasibuan Khairiza Lubis Makhrany Dalimunthe Marini Damanik Maslena Maslena Muslim Muslim Nelly Safrida Lubis Nurul Azmi Rifqah Amalia Selvia Dewi Pohan Sri Adelila Sari Trioki Ningsih