Biota: Biologi dan Pendidikan Biologi
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Perbedaan Aktivitas Bakteri Tanah Pendegradasi Minyak Antara Yang Dialirkan Udara dan Penambahan Peroksida (H2O2) Sebagai Sumber Oksigen
Full text linkPenelitian ini dilakukan pada tanggal 7 mei – 4 juni 2015, di L aboratorium IPA Biologi IAIN Mataram. Penelitian bertujuan untuk mengetahui perbedaan aktivitas bakteri tanah pendegradasi minyak antara yang dialirkan udara dan penambahan peroksida (H2O2) sebagai sumber oksigen. Salah satu faktor yang mempengaruhi proses degradasi yaitu ketersediaan oksigen (O2), dimana pada penelitian ini sumber oksigen yang digunakan adalah dengan cara dialirkan udara, penambahan peroksida dan kontrol atau sistem terbuka. Hasil analisis data menunjukkan adanya perbedaan aktivitas bakteri tanah dalam mendegradasi minyak dimana aktivitas bakteri pada perlakuan A (dialirkan udara) (-2,63) lebih besar dari perlakuan B (penambahan peroksida) (0,44), dan aktivitas bakteri tanah dalam mendegradasi minyak pada perlakuan B (penambahan peroksida) (0,44) lebih besar dari perlakuan C (kontrol) (0,21). Hal ini menujukkan bahwa ketersediaan oksigen pada perlakuan A (dialirkan udara) lebih terpenuhi dibandingkan pada perlakuan B (penambahan peroksida) dan perlakuan C (kontrol).
 
Respon Produksi Kacang Tanah (Arachis hypogaea L.) Akibat Penggunaan Pupuk NPK dan Pupuk Mikroba
Full text linkThe production of peanut (Arachis hypogeae L.) has declined over the past five years. This has been influenced by the use of land regardless of soil fertility. This research aims to know the effect of using NPK and microbial fertilizer to peanut (Arachis hypogeae L.) production. The treatments consists of B1= microbial fertilizer, B2= NPK Fertilizer and B3= without fertilizer. These treatments were applied to Sima variety, Singa variety and Flores local cultivar. The result shows that the production of flowers and pods mostly produced by Sima variety through the use of microbial fertilizer. Besides, Flores local cultivar shows response which is not markedly different from the treatment using microbial fertilizer
Pengaruh Penggunaan Jurnal Belajar Terhadap Hasil Belajar Mahasiswa Pendidikan Biologi STKIP-PI Makassar pada Mata Kuliah Perencanaan Pembelajaran
Full text linkThis research was quasi experimental with the purpose to determine the influence of using study journal toward study outcome of biology education students of STKIP-PI Makassar in lesson plan course. The research design is prestest-posttest control group design. The populations were students of Biology Education Program who conducting lesson plan of biologi subject in even semester (VI) of academic year 2017/2018. This research used random sampling technique to chose a control and an experimental class. The data collected by pretest and posttest. The data was collected analyzed by using descriptive and inferential statistic. The result showed that the average score of experimental class is 80,42 and control class is 75,33, standard deviation are 8,03 and 9,67. The result of hypotheses testing use Independent Samples T-test with SPSS for windows 20 program to get significance value is 0,03. The significance value 0,003 < α= 0,05, so H0 was rejected and H1 was accepted. It is showed that using study journal give positive influence to study outcome of biology education students of STKIP-PI Makassar in lesson plan course
Studi Keamanan Perbandingan Biochar dan Tanah Dengan Indikator Cacing Serta Pengaruhnya Terhadap Perkecambahan dan Pertumbuhan Kacang Hijau (Phaseolus radiatus)
Full text linkPenelitian ini bertujuan untuk mengetahui ada pengaruh perbandingan biochar dan tanah terhadap keamanan tanah berdasarkan indikator cacing, dan ada pengaruh tingkat keamanan perbandingan biochar dan tanah terhadap perkecambahan dan pertumbuhan kacang hijau (Phaseolus radiatus). Jenis penelitian yang digunakan adalah eksperimen dengan rancangan percobaan mengunakan rancangan acak kelompok (RAK). Data hasil penelitian dianalisis mengunakan Statistik Deskriptif, Chi Squer (X2), Rang Spearman (Rs) untuk mengetahui Korelasi diantara tingkat keamanan cacing tanah dengan perkecambahan dan pertumbuhan serta biomassa tanaman kacang hijau selain itu untuk pertumbuhan dan biomassa kacang hijau di analisis juga dengan mengunakan ANOVA dan dilanjutkan dengan uji BNJ (Beda Nyata Jujur) pada taraf signifikansi 5%. Hasil analisis pada Anova untuk pertumbuhan diperoleh nilai Fhitung perl. yakni 30,5 > Ftabel 5% = 3,33, sedangkan biomassa untuk berat basah Fhitung perl. = 57,1 > Ftabel 5% = 3,33, dan untuk berat kering Fhitung perl.= 56 > Ftabel 5% = 3,33. Hasil dari penelitian menunjukkan bahwa adanya pengaruh pada variasi perbandingan persentase biochar terhadap pertumbuhan dan biomassa kacang hijau
Hubungan Perilaku Seksual Remaja SMU Dengan Status Pernikahan Orang Tua di Kota Mataram Nusa Tenggara Barat
Full text linkThe condition of family life whereby there is divorce or separation will either mentally or psychologically affect children in the family that becomes more obvious as the children grow up. Moreover, when there are other factors that support the behavior. To identify association between sexual behavior of senior high school teenagers and marital status of parents at Mataram Municipality Nusa. Data analysis used chi square (χ²) and logistic regression at confidence interval 95%. Result: Marital status of parents was significantly associated with sexual behavior of teenagers with p-value 0.0001 and PR 2.03 (CI 95% 1.65-2.50). The result of bivariate analysis showed significant association between variable of peers’ influence with p value 0.0001 and PR 2.40 (CI95% 1.90-3.04) and variable of mass media exposure with p-value 0.0001 and PR 3.92 (CI 95% 2.42-6.36) and sexual behavior of teenagers. The result of logistic regression analysis showed marital status of divorced parents had the probability of increasing sexual behavior of teenagers as much as 19% after being controlled by variables of peers’ influence and mass media exposure. Conclusion: Marital status of parents was associated with sexual behavior of teenagers. Teenagers whose parents were divorced had the probability for higher sexual behavior than those whose parents were not divorced.
 
Penurunan Total Koloni Bakteri Daging Ayam Pedaging (Gallus domesticus) di Pasar Pagesangan, Kota Mataram Dengan Perlakuan Infusa Daun Salam (Syzygium polyanthum)
Full text linkTujuan penelitian ini untuk mengetahui pengaruh konsentrasi infusa daun salam dan waktu pengamatan terhadap penurunan jumlah bakteri pada daging ayam pedaging. Penelitian dilakukan secara eksperimental menggunakan rancangan acak lengkap dengan 3 perlakuan yaitu (konsentrasi infusa 0%, 5%, 10%) dan 3 ulangan. Variabel yang diukur meliputi jumlah bakteri. Data total koloni bakteri dianalisis secara kuantitatif menggunakan ANOVA. Hasil analisis data tersebut menunjukkan bahwa F hitung > Ftabel sehingga Ha diterima artinya perendaman dengan konsentrasi infusa daun salam berpengaruh terhadap penurunan total koloni bakteri pada daging ayam pedaging karna senyawa yang terkandung di dalam daun salam seperti tannin, flavonoid, dll.
 
Implementasi Model Kooperatif Tipe Stad Terhadap Hasil Belajar Kimia Siswa Ditinjau dari Keterampilan Berpikir Kreatif
Full text linkPenelitian ini bertujuan untuk mengetahui interaksi antara model pembelajaran dengan keterampilan berpikir kreatif terhadap hasil belajar kimia siswa. Jenis penelitian yang digunakan adalah eksperimen semu dengan rancangan analisis faktorial 2x2. Populasi penelitian ini adalah seluruh siswa kelas XMS SMAN 1 Narmada yang berjumlah 210 siswa. Sampel penelitian ini diambil dengan teknik simple random sampling sejumlah 83 siswa terdiri dari satu kelas eksperimen 1 dan satu kelas kelas eksperimen 2 dengan perlakuan yang berbeda. Instrumen penelitian berupa lembar angket keterampilan berpikir kreatif dan tes hasil belajar kimia siswa yang dianalisis dengan teknik ANOVA 2 jalur yang sebelumnya diuji normalitas dan uji homogenitas pada taraf signifikansi 0,05. Hasil penelitian menunjukkan tidak ada interaksi antara model pembelajaran dengan keterampilan berpikir kreatif terhadap hasil belajar kimia siswa kelas XMS SMA Negeri 1 Narmada.
 
Keanekaragaman dan Hubungan Kekerabatan Pisang (Musaceae) di Kota Bengkulu, Provinsi Bengkulu
Full text linkThis study was to determine the diversity and banana phylogeny (Musaceae) in Bengkulu City, Bengkulu Province. The results of this study are expected to be an information material for development to achieve improvements in banana varieties / cultivars. Collection of exploration study data in selected Bengkulu City, namely 3 Districts of Muara Bangkahulu, Sungai Serut, and Teluk Segara. The location of specimen collection consists of wild and cultivated plants in the yard and a community garden in the city of Bengkulu. Morphological data were compiled based on observations of morphological characters from specimens in the field, characters adapted from banana descriptors. Morphological data were compiled based on observations of specimens, the results of morphological characters were analyzed to form fenogram to see phylogeny, using the NTSYS-pc 2.02 program. 22 collections and 10 varieties of bananas (Musaceae), wild bananas and cultivation by the community were found in 3 sub-districts of Muara Bangkahulu, Sungai Serut, and Teluk Segara. Cultivated bananas that are planted in general, the community planted in the home yard for home-based commodities. The relationship between wild bananas (Musaceae) and cultivation in the city of Bengkulu, divided into two main groups, namely group A, namely the type of Musa acuminata Colla and group B is the type of Musa acuminata x Musa balbisiana. Both of these groups have similarity coefficient values of phylogeny between 0.45 to 0.60
Profil Anatomi Batang Kacang Komak (Lablab purpureus (L.) Sweet) Lokal Pulau Lombok
Full text linkHyacinth bean (Lablab purpureus (L.) Sweet) is a member of Fabaceae which has high economic potential but is still treated as an underutilized crop. Research on Lombok’s hyacinth bean focused on stem anatomical profile has never been conducted. The aims of this research were to study stem anatomical profile of hyacinth bean in Lombok, West Nusa Tenggara. Young and mature stem were collected using exploration method. Anatomical sample preparation was done using free hand section method, stained with safranin, and mounted in a glycerine liquid. Sample was visualized and documented using binocular microscope connected to the digital camera integrated with ScopeImage 9 software. Data were analyzed by a triangulation method. The result showed that stem anatomical profile of hyacinth bean in Lombok by transversal section consists of one layer of an epidermal cell and unicellular glandular trichomes as it’s derivate. Parenchyma cell was found in the cortex, interfascicular region, and pith in shape of rounded, oval, up to polygonal and varied in size. Vascular tissue showed a unique structure and became the distinctive feature od hyacinth bean stem. There were 2 type of vascular bundles i.e big and small vascular bundles. The large vascular bundles contain xylem and phloem and the small vascular bundles may or may not contain both xylem and phloem
Isolasi dan Identifikasi Kapang Pelarut Fosfat dari Fosfat Guano Gua Pawon
Full text linkThe purpose of this study was to isolate and identify phosphate solubilizing Fungi from phosphate guano in Pawon Cave, Karst area, Citatah, West Java. The research design was descriptive. The data obtained were presented descriptively based on macroscopic and microscopic morphological characteristics and the result of qualitative phosphate capability screening on pikovskaya medium. The results showed that there were five isolates in the phosphate guano in Pawon Cave. Karst area, which were Penicillium sp. PF1, Aspergillus sp. PF2, Aspergillus sp. PF3, Mycelia sterilia, and Mucor sp. Based on the screening test, there were two isolates which could solubilize the phosphate, Aspergillus sp. PF3 and Mucor sp