Subjects -> BIOLOGY (Total: 3174 journals)
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BIOLOGY (1491 journals)            First | 1 2 3 4 5 6 7 8 | Last

Showing 201 - 400 of 1720 Journals sorted alphabetically
Biological Research     Open Access   (Followers: 1)
Biological Rhythm Research     Hybrid Journal   (Followers: 1)
Biological Theory     Hybrid Journal   (Followers: 3)
Biological Trace Element Research     Hybrid Journal  
Biologicals     Full-text available via subscription   (Followers: 7)
Biologics: Targets & Therapy     Open Access   (Followers: 1)
Biologie Aujourd'hui     Full-text available via subscription  
Biologie in Unserer Zeit (Biuz)     Hybrid Journal   (Followers: 36)
Biologija     Open Access  
Biology     Open Access   (Followers: 3)
Biology and Philosophy     Hybrid Journal   (Followers: 18)
Biology Bulletin     Hybrid Journal   (Followers: 1)
Biology Bulletin Reviews     Hybrid Journal  
Biology Direct     Open Access   (Followers: 9)
Biology Letters     Full-text available via subscription   (Followers: 44)
Biology Methods and Protocols     Open Access  
Biology of Sex Differences     Open Access   (Followers: 1)
Biology of the Cell     Full-text available via subscription   (Followers: 9)
Biology Open     Open Access  
Biology, Medicine, & Natural Product Chemistry     Open Access   (Followers: 2)
Bioma : Jurnal Ilmiah Biologi     Open Access  
Biomacromolecules     Hybrid Journal   (Followers: 23)
Biomarker Insights     Open Access   (Followers: 2)
Biomarkers     Hybrid Journal   (Followers: 4)
Biomass and Bioenergy     Partially Free   (Followers: 8)
Biomaterials     Hybrid Journal   (Followers: 55)
Biomaterials Advances     Full-text available via subscription   (Followers: 19)
Biomath     Open Access  
Biomatter     Open Access  
Biomechanics and Modeling in Mechanobiology     Hybrid Journal   (Followers: 8)
Biomedical Chromatography     Hybrid Journal   (Followers: 6)
Biomedical Engineering     Hybrid Journal   (Followers: 11)
Biomedical Engineering and Computational Biology     Open Access   (Followers: 11)
BioMedical Engineering OnLine     Open Access   (Followers: 4)
Biomedical Engineering: Applications, Basis and Communications     Hybrid Journal   (Followers: 4)
Biomedical Journal     Open Access   (Followers: 5)
Biomedical Science and Engineering     Open Access   (Followers: 5)
Biomedical Signal Processing and Control     Hybrid Journal   (Followers: 9)
BioMetals     Hybrid Journal   (Followers: 1)
Biometrical Letters     Open Access  
Biometrics     Hybrid Journal   (Followers: 51)
Biometrika     Hybrid Journal   (Followers: 21)
Biomimetic Intelligence and Robotics     Open Access  
Biomolecular NMR Assignments     Hybrid Journal   (Followers: 3)
Biomolecules     Open Access   (Followers: 1)
BioNanoScience     Partially Free   (Followers: 3)
Bionature     Open Access   (Followers: 1)
Biopreservation and Biobanking     Hybrid Journal   (Followers: 2)
Bioprocess and Biosystems Engineering     Hybrid Journal   (Followers: 9)
Bioresource Technology     Partially Free   (Followers: 9)
BioRisk     Open Access   (Followers: 2)
Biosaintifika : Journal of Biology & Biology Education     Open Access  
BioScience     Hybrid Journal   (Followers: 27)
Biosecurity and Bioterrorism: Biodefense Strategy, Practice, and Science     Hybrid Journal   (Followers: 3)
Biosemiotics     Hybrid Journal   (Followers: 1)
Biosensors     Open Access   (Followers: 3)
Biosensors and Bioelectronics     Hybrid Journal   (Followers: 27)
Biosensors and Bioelectronics : X     Open Access   (Followers: 2)
Bioseparation     Hybrid Journal   (Followers: 1)
Biosfer : Jurnal Biologi dan Pendidikan Biologi     Open Access  
Biosfer : Jurnal Tadris Biologi     Open Access  
BioSocieties     Hybrid Journal   (Followers: 3)
Biospecies     Open Access  
BIOspektrum     Hybrid Journal   (Followers: 5)
Biostatistics     Hybrid Journal   (Followers: 18)
Biosystematics and Ecology     Open Access   (Followers: 2)
Biosystems     Hybrid Journal   (Followers: 3)
Biosystems Diversity     Open Access  
Biota Amazônia     Open Access  
Biota Neotropica     Open Access  
Biotechnology Advances     Hybrid Journal   (Followers: 34)
Biotropia : The Southeast Asian Journal of Tropical Biology     Open Access  
Biotropica     Hybrid Journal   (Followers: 19)
Birth Defects Research     Hybrid Journal  
BJHM Open Research     Full-text available via subscription   (Followers: 1)
BMC Bioinformatics     Open Access   (Followers: 110)
BMC Biology     Open Access   (Followers: 50)
BMC Developmental Biology     Open Access   (Followers: 13)
BMC Evolutionary Biology     Open Access   (Followers: 58)
BMC Genomics     Open Access   (Followers: 69)
BMC Molecular and Cell Biology     Open Access   (Followers: 40)
BMC Proceedings     Full-text available via subscription   (Followers: 2)
BMC Research Notes     Open Access   (Followers: 3)
BMC Structural Biology     Open Access   (Followers: 8)
BMC Systems Biology     Open Access   (Followers: 16)
Boletín Científico : Centro de Museos. Museo de Historia Natural     Open Access  
Boletín del Centro de Investigaciones Biológicas     Open Access  
Boletín Micológico     Open Access  
Bone Reports     Open Access  
Bonorowo Wetlands     Open Access  
Borneo Journal of Resource Science and Technology     Open Access  
Bothalia : African Biodiversity & Conservation     Open Access  
Brain Science Advances     Open Access  
Brazilian Journal of Biological Sciences     Open Access  
Breastfeeding Medicine     Hybrid Journal   (Followers: 20)
Briefings in Bioinformatics     Hybrid Journal   (Followers: 43)
Briefings in Functional Genomics     Hybrid Journal   (Followers: 3)
British Poultry Abstracts     Hybrid Journal   (Followers: 3)
Brittonia     Hybrid Journal  
Bulletin de la Société Royale des Sciences de Liège     Open Access  
Bulletin of Experimental Biology and Medicine     Hybrid Journal  
Bulletin of Mathematical Biology     Hybrid Journal   (Followers: 9)
Bulletin of the Ecological Society of America     Open Access   (Followers: 4)
Bulletin of the Lebedev Physics Institute     Hybrid Journal  
Butlletí de la Institució Catalana d'Història Natural     Open Access  
CABI Agriculture and Bioscience     Open Access   (Followers: 1)
Caldasia     Open Access  
Cameroon Journal of Experimental Biology     Open Access  
Canadian Journal of Bioethics     Open Access  
Canadian Journal of Plant Pathology     Hybrid Journal   (Followers: 3)
Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries     Open Access  
Cancer Biology & Therapy     Open Access   (Followers: 11)
Cancer Cell International     Open Access   (Followers: 7)
Carbon Capture Science & Technology     Open Access  
Carbon Management     Hybrid Journal   (Followers: 5)
Carbon Resources Conversion     Open Access   (Followers: 2)
Caryologia : International Journal of Cytology, Cytosystematics and Cytogenetics     Partially Free  
Caucasiana     Open Access  
Cell     Full-text available via subscription   (Followers: 1141)
Cell Adhesion & Migration     Open Access   (Followers: 9)
Cell and Tissue Banking     Hybrid Journal   (Followers: 1)
Cell and Tissue Biology     Hybrid Journal   (Followers: 4)
Cell and Tissue Research     Hybrid Journal   (Followers: 5)
Cell Biochemistry and Function     Hybrid Journal   (Followers: 8)
Cell Biology and Development     Open Access   (Followers: 2)
Cell Biology and Toxicology     Hybrid Journal   (Followers: 10)
Cell Biology Education     Free   (Followers: 4)
Cell Biology International     Hybrid Journal   (Followers: 4)
Cell Biology International Reports     Hybrid Journal   (Followers: 2)
Cell Calcium     Hybrid Journal   (Followers: 2)
Cell Communication & Adhesion     Hybrid Journal   (Followers: 2)
Cell Cycle     Full-text available via subscription   (Followers: 5)
Cell Death and Differentiation     Hybrid Journal   (Followers: 7)
Cell Discovery     Open Access   (Followers: 2)
Cell Division     Open Access   (Followers: 1)
Cell Genomics     Full-text available via subscription   (Followers: 2)
Cell Metabolism     Full-text available via subscription   (Followers: 58)
Cell Proliferation     Open Access  
Cell Reports     Open Access   (Followers: 61)
Cell Reports Medicine     Open Access   (Followers: 3)
Cell Reports Methods     Open Access   (Followers: 1)
Cell Research     Hybrid Journal   (Followers: 11)
Cell Stress and Chaperones     Hybrid Journal   (Followers: 1)
Cell Surface     Open Access  
Cell Systems     Hybrid Journal   (Followers: 7)
Cells     Open Access   (Followers: 2)
Cells & Development     Hybrid Journal   (Followers: 3)
Cells Tissues Organs     Full-text available via subscription   (Followers: 1)
Cellular Immunology     Hybrid Journal   (Followers: 29)
Cellular Logistics     Full-text available via subscription  
Cellular Microbiology     Hybrid Journal   (Followers: 12)
Cellular Oncology     Hybrid Journal   (Followers: 3)
Cellular Reprogramming     Hybrid Journal  
Cellular Signalling     Hybrid Journal   (Followers: 10)
Ceylon Journal of Science     Open Access  
Channels     Open Access   (Followers: 1)
Check List : The Journal of Biodiversity Data     Open Access   (Followers: 2)
Chem     Hybrid Journal  
ChemBioEng Reviews     Full-text available via subscription   (Followers: 3)
Chemosensory Perception     Hybrid Journal  
Chirality     Hybrid Journal  
Chromosoma     Hybrid Journal  
Chromosome Research     Hybrid Journal   (Followers: 2)
Ciencia     Open Access  
Ciencia Amazónica (Iquitos)     Open Access  
Ciência ET Praxis     Open Access  
CienciaUAT     Open Access  
Cladistics     Hybrid Journal   (Followers: 7)
Climate Change Ecology     Open Access   (Followers: 15)
Clinical Dysmorphology     Hybrid Journal  
Clinical Phytoscience     Open Access  
Clinical Proteomics     Open Access   (Followers: 3)
Clinical Spectroscopy     Open Access  
Coevolution     Open Access  
Cogent Biology     Open Access  
Cognitive Neurodynamics     Hybrid Journal   (Followers: 2)
Cold Spring Harbor Perspectives in Biology     Full-text available via subscription   (Followers: 3)
Cold Spring Harbor Protocols     Full-text available via subscription   (Followers: 4)
Communication in Biomathematical Sciences     Open Access   (Followers: 2)
Communications Biology     Open Access  
Communications in Applied Sciences     Open Access  
Communications Materials     Open Access  
Communicative & Integrative Biology     Open Access  
Community Ecology     Full-text available via subscription   (Followers: 27)
Comparative Medicine     Full-text available via subscription   (Followers: 5)
Composite Interfaces     Hybrid Journal   (Followers: 6)
Comptes Rendus : Chimie     Open Access  
Comptes Rendus Biologies     Open Access   (Followers: 1)
Computational Biology Journal     Open Access   (Followers: 6)
Computational Mathematics and Mathematical Physics     Hybrid Journal   (Followers: 5)
Computer Methods in Biomechanics and Biomedical Engineering     Hybrid Journal   (Followers: 10)
Computer Methods in Biomechanics and Biomedical Engineering : Imaging & Visualization     Hybrid Journal  
Computers in Biology and Medicine     Hybrid Journal   (Followers: 11)
Connective Tissue Research     Hybrid Journal  
Contact (CTC)     Open Access  
Contributions to Plasma Physics     Hybrid Journal   (Followers: 3)
CRISPR Journal     Hybrid Journal  
Critical Reviews in Clinical Laboratory Sciences     Hybrid Journal   (Followers: 19)
Crustaceana     Hybrid Journal   (Followers: 6)
Cryobiology     Hybrid Journal   (Followers: 3)

  First | 1 2 3 4 5 6 7 8 | Last

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Journal Cover
Biosfer : Jurnal Tadris Biologi
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2086-5945 - ISSN (Online) 2580-4960
Published by IAIN Raden Intan Lampung Homepage  [26 journals]
  • The Effectiveness of Google Classroom Learning Applications on Student
           Learning Outcomes

    • Authors: Muh Anas, Warda Murti
      First page: 99
      Abstract: The Minister of Culture and Education instructed universities to deactivate lecture activities in the campus environment and convert them to learning from home. By utilizing virtual and digital technology as a substitute for physical meetings, one of the interesting things to use is the Google Classroom application which is an application that can be used for free by providing features that suit the needs of lecturers and students. The purpose of this study was to determine the effectiveness of the Google Classroom learning application on the learning outcomes of students of the Indonesian Development STKIP Biology Study Program. This research is a quantitative research with experimental method with One Group Pretest Posttest Design. The sample in this study was 38 students of STKIP PI biology education in the academic year 2020/2021 in the Vertebrate Zoology course. Data collection techniques in this study are using essay tests, questionnaires, and documentation. The results of this study indicate that the average student biology learning outcome after being taught using the learning model is 80, higher than the student before being given treatment, which is 65.8. The results of hypothesis testing with independent sample t-test obtained tcount value of 3,149 which is higher than ttable of 1.67 which shows student learning outcomes after using the google classroom application are significantly better than students before the application of the application. Data collection techniques in this study are using essay tests, questionnaires, and documentation. The results of this study indicate that the average student biology learning outcome after being taught using the learning model is 80, higher than the student before being given treatment, which is 65.8. The results of hypothesis testing with independent sample t-test obtained tcount value of 3,149 which is higher than ttable of 1.67 which shows student learning outcomes after using the google classroom application are significantly better than students before the application of the application. Data collection techniques in this study are using essay tests, questionnaires, and documentation. The results of this study indicate that the average student biology learning outcome after being taught using the learning model is 80, higher than the student before being given treatment, which is 65.8. The results of hypothesis testing with independent sample t-test obtained tcount value of 3,149 which is higher than ttable of 1.67 which shows student learning outcomes after using the google classroom application are significantly better than students before the application of the application. higher than students before being treated, namely 65.8. The results of hypothesis testing with independent sample t-test obtained tcount value of 3,149 which is higher than ttable of 1.67 which shows student learning outcomes after using the google classroom application are significantly better than students before the application of the application. higher than students before being treated, namely 65.8. The results of hypothesis testing with independent sample t-test obtained tcount value of 3,149 which is higher than ttable of 1.67 which shows student learning outcomes after using the google classroom application are significantly better than students before the application of the application.
      PubDate: 2022-01-03
      DOI: 10.24042/biosfer.v12i2.9723
      Issue No: Vol. 12, No. 2 (2022)
       
  • Diversity and Abundance of Dragonfly (Anisoptera) and Damselfly
           (Zygoptera) at Sabo Dam Complang, Kediri, East Java, Indonesia

    • Authors: Muhamad Azmi Dwi Susanto, Okta Fina Arianti
      First page: 110
      Abstract: Sabo Dam Complang is a dam area that is minimally polluted and disturbed so that it has the potential as a natural habitat for various types of dragonflies. Diversity and abundance of dragonflies in a location is one component of biodiversity that plays an important role as a predator to maintain the balance of the food chain in natural ecosystems and as a bioindicator of water quality. This study aims to identify and analyze the diversity and abundance of dragonflies species at Sabo Dam Complang. Samples were taken using the VES (Visual Ecounter Survey) method and 2 transect methods, namely line transects and belt transects. The data that has been obtained were analyzed using the Shannon-Wienner species diversity index (H') and the relative abundance of species (KR). The results of this study show the diversity index value of 2.59 which is included in the relatively medium category. There were 20 species of dragonflies that belonged to 6 families.
      PubDate: 2021-12-30
      DOI: 10.24042/biosfer.v12i2.9883
      Issue No: Vol. 12, No. 2 (2021)
       
  • An Implementation of Rotating Trio Exchange (RTE) Assisted by Coup Card
           toward Biology Learning Outcome

    • Authors: Rizki Amalia Nur, Nurhidayah Nurhidayah
      First page: 123
      Abstract: Tujuan Penelitian ini adalah untuk mengetahui pengaruh pembelajaran model Rotating Trio Exchange (RTE) berbantuan media couple card terhadap hasil belajar biologi SMAS DDI Maros;  Metode yang digunakan adalah kuantitatif jenis quasi eksperimen. Bentuk dari metode quasi eksperimen yang digunakan adalah nonequivalent group pretest posttest design; hasil temuan diperoleh hasil uji hipotesis nilai hasil belajar pretest pada kelas kontrol dan kelas eksperimen diperoleh 0,138 dimana Sig > α  artinya tidak ada perbedaan yang signifikan atau hasil belajar nilai pretest dari kedua kelas tidaklah berbeda. Sedangkan, pada hasil belajar posttest kelas kontrol dan kelas eksperimen diperoleh nilai pada uji-t posttest diperoleh 0,000 dimana Sig < α artinya kedua kelas mengalami perbedaan yang signifikan sehingga terdapat perbedaan hasil belajar dari kedua kelas. Sehingga dapat disimpulkan bahwa penerapan model pembelajaran Rotating Trio Ecchange  (RTE) berbantuan media couple card berpengaruh terhadap hasil belajar siswa di SMAS DDI Maros.
      PubDate: 2021-12-29
      DOI: 10.24042/biosfer.v12i2.9913
      Issue No: Vol. 12, No. 2 (2021)
       
  • The Vitamin C Potential of Sorrel Tree (Averrhoa bilimbi) as LATEX
           Coagulant

    • Authors: Khairul Anam, Marlina Kamelia, Indah Faridah
      First page: 130
      Abstract: Tujuan penelitian ini adalah untuk mengetahui potensi vitamin C buah belimbing wuluh ( Averrhoa bilimbi) sebagai bahan penggumpal alami lateks. Penelitian menggunakan metode Rancangan Acak Lengkap (RAL) yaitu terdapat tiga kali buah dengan perlakuan yaitu kontrol negatif (tanpa bahan penggumpal) dan kontrol positif diberikan sari belimbing wuluh ( Averrhoa bilimbi) dengan volume 5 ml, 10 ml, 15 ml dan 20 ml. Uji kadar vitamin C menggunakan Spektofotometri UV-VIS tipe DR 6000 dengan panjang gelombang 265 nm – 271 nm. Selanjutnya data dianalisis menggunakan uji statistik One Way Anovadan dilakukan uji lanjut BNT untuk mengetahui suara yang paling efektif sebagai penggumpal lateks. Data kuantitatif berupa waktu penggumpalan dan berat lateks. Hasil penelitian menunjukkan bahwa, sari buah belimbing wuluh dapat digunakan sebagai lateks koagulan. waktu tercepat dan berat tertinggi lateks terdapat pada volume sari buah 20 ml yaitu 1,18 menit dan 34,30 gram. Sedangkan hasil terendah pada volume 5 ml dengan waktu penggumpalan 5,4 menit dan berat 18,62 gram.
      PubDate: 2021-12-30
      DOI: 10.24042/biosfer.v12i2.7877
      Issue No: Vol. 12, No. 2 (2021)
       
  • Acute Toxicity of Household-Scale Lebak Batik Industrial Wastewater on
           Common Carp

    • Authors: Swastika Oktavia, Cory Novi
      First page: 140
      Abstract: The purpose of this study was to determine the acute toxicity of household-scale Lebak Batik industrial wastewater on carp. The methods used were waste characteristics test, animal acclimatization, acute toxicity test for 96 hours with 0, 10, 20, 30, 40, and 50% treatments, measurement of environmental parameters, and data analysis using probit analysis. The results showed that the lethal time (LT50) and lethal concentration (LC50) for 96 hours of treatment were 1,8 days and 8,56%, respectively, with a Toxicity Unit Area (TUa) of 11,68. This proved that the wastewater from the Lebak batik industry had a major effect on causing acute toxicity.
      PubDate: 2021-12-31
      DOI: 10.24042/biosfer.v12i2.9737
      Issue No: Vol. 12, No. 2 (2021)
       
  • The Effectiveness of Google Classroom Learning Applications on Student
           Learning Outcomes

    • Authors: Eva Tyas Utami, Indah Salsabila Kurnia, Mahriani Mahriani
      First page: 149
      Abstract: Aspartame is one of the most widely used artificial sweeteners in food and beverages. In the body, aspartame will undergo metabolism into methanol which will be oxidized to formaldehyde. Formaldehyde will increase the production of ROS. The purpose of this study was to determine the effect of Catharanthus roseus leaves extract on kidney histology of mice aspartame-induced. Mice were divided into 4 groups, namely the negative control group (K-) without treatment, the positive control (K+) given aspartame 0.02 mg/day, the dose group 1 (D1) was given aspartame 0.02 mg/day and continued with the C. roseus leaves extract at a dose of 0.42 mg/kg, and group 2 (D2) were given aspartame 0.02 mg/day followed by C. roseus leaf extract at a dose of 0.84 mg/kg bw.  Aspartame was administered by IP for 14 days and C. roseus  leaves extract was administered by gavage for 12 days. The data obtained were analyzed by One Way Anova and DMRT test with a significance level of 0.05. The results showed that the induction of aspartame at a dose of 0.02 mg/day in mice increased the average number of proximal tubular necrosis cells. Catharanthus roseus leaves extract administration at 0.42 mg/kg bw and 0.84 mg/kg bw for 12 days can reduce the number of proximal tubular necrosis cells in aspartame-induced mice. Thus it can be concluded that the administration of C. roseus  leaves extract can reduce the proximal kidney tubules necrosis but has not been able to reach normal conditions yet.
      PubDate: 2021-12-31
      DOI: 10.24042/biosfer.v12i2.10007
      Issue No: Vol. 12, No. 2 (2021)
       
  • The Besemah Community’s Indigenous Knowledge of Tebat Bukit Conservation
           in Tebat Benawa Village

    • Authors: Doki Efendi, Meilinda Meilinda, Riyanto Riyanto
      First page: 158
      Abstract: This study aims at finding out the form of indigenous knowledge of the Tebat Benawa Community toward Tebat Bukit conservation. It was conducted from December 2019 to January 2020. It was a descriptive study the object of which was the Tebat Benawa Village Community. The data were collected by means of literature study, observation, and semistructured interviews. The results show that the Community has five indigenous knowledge in the implementation of Tebat Bukit conservation which is classified into three indicators, i.e. a) availability of tebat (artificial lake) water: Tebat Bukit and ghumbus b) Use of tebat water: Siring ayik, c) tebat and its water management: Nebasi jalan, ghumbus, and society knowledge transfer in preserving Tebat Bukit through direct experience sharing, for example taking part in fishing in tebat, participattion in implementing indigenous tradition, socialization of village administration, parental advice, and petatah-petitih (oral tradition on local wisdom)
      PubDate: 2021-12-31
      DOI: 10.24042/biosfer.v12i2.9641
      Issue No: Vol. 12, No. 2 (2021)
       
  • Identification of Bacterial Symbiont Sponge with Antibacterial Activity
           against Multi Drug Resistant Organism (MDRO) Bacteria from Sea Waters in
           Sibolga, North Sumatra Indonesia

    • Authors: Endang Sulistyarini Gultom, Hasruddin Hasruddin, Aida Fitriani Sitompul, Albert D Situmorang, Eko Prasetya
      First page: 169
      Abstract: Irrational use of antibiotics for the treatment of infections in diseases caused by pathogenic bacteria can cause resistance. One way to overcome this resistance is to explore active compounds that have the potential as antibacteria of natural origin, namely sponge symbiont bacteria. This research method is experimental with descriptive data analysis. The purpose of this study was to isolate and identify sponge symbiont bacteria that have antibacterial potential against Multi Drug Resistance Organisms (MDRO) with the 16S rRNA gene marker. Based on the results of the study, 2 sponges were obtained, namely Clathrina sp and Agelas sp, each having 11 and 7 isolates of symbiont bacteria, respectively. Based on the results of the antibacterial activity test, out of 18 isolates of symbiont bacteria, only 4 had antibacterial potential against MDRO (Klebsiella pneumonia ESBL, Pseudomonas aeruginosa ESBL, or Stapyhlococcus lugdunensis MRSA) with inhibition zones of 9.3 mm, 8.3 mm, and 8.1 mm, respectively. The results of bacterial identification using the 16S rRNA gene sequence, isolates S1I3, S1I9, and A1I3 belong to the Bacillus cereus and Bacillus paramycoides types. This research is expected to provide important information about sponge symbiont bacteria that have antibacterial potential against MDRO.

      PubDate: 2021-12-30
      DOI: 10.24042/biosfer.v12i2.10138
      Issue No: Vol. 12, No. 2 (2021)
       
  • Developing Student Worksheet Based on System Approach on Water Cycle Topic
           of Water Conservation Learning at Junior High School

    • Authors: Nur Khalifah, Riyanto Riyanto, Khiron Nazip, Meilinda Meilinda
      First page: 185
      Abstract: Air merupakan komponen penting yang harus ada di bumi dan tetap harus di jaga kelestariannya dengan konservasi air yang diajarkan sejak dini, melalui sistem belajar yang kompleks pada materi siklus air dan mengaitkannya dengan berpikir sistem dikembangkanlah LKPD berbasis system approach pada topik siklus air di SMP yang di uji kevalidan dan kepraktisannya melalui metode Developmental Research tipe II oleh Richey & Klein (2005) dengan dua tahapan yaitu fase eksplorasi dan uji coba kepada peserta didik. Fase uji coba dilakukan melalui metode lesson study yang diobservasi oleh lima orang observer dengan tujuan untuk mengetahui aktivitas siswa selama pembelajaran berlangsung. Hasil LKPD divalidasi oleh lima orang validator untuk menguji kevalidan LKPD dengan menggunakan skala likert. Teknik analisis data dilakukan dengan analisis data kuantitatif dan kualitatif. Hasil yang diperoleh berupa persentasi uji kevalidan dengan rata-rata78% yang artinya LKPD sudah dalam kategori valid. Kemudian dari hasil uji praktikalitas peserta didik diperoleh hasil rata-rata 81,02% yang menunjukkan kategori sangat praktis. Sehingga di hasilkanlah LKPD yang mempunyai nilai kevalidan dan kepraktisan yang layak digunakan dalam proses pembelajaran siklus air.
      PubDate: 2021-12-30
      DOI: 10.24042/biosfer.v12i2.10467
      Issue No: Vol. 12, No. 2 (2021)
       
  • Cytological analysis of Kepok Abu Polyploid's Banana Plantlets (Musa
           paradisiaca L.) Due to Colchicine's Application in Tissue Culture
           Media

    • Authors: Istiqomah istiqomah, Sri Wahyuningsih, Eti Ernawiati, Rochmah Agustrina
      First page: 194
      Abstract: Colchicine is often used in plant breeding to induce mutations to produce polyploid plants that have superior properties. Polyploid plants are plants that have more than one set of chromosomes in their somatic cells. Cytologically, polyploid plants have a larger variations in shape, the number of chromosomes, and cell size. The use of colchicine compounds in Kepok Abu Banana expected to produce the polyploid of  Kepok Abu Banana. The purpose of this study was to determine the emergence of mitotic abnormalities, changes in the number of chromosomes, the mitotic index, and the number and length of plantlet roots of Kepok Abu banana due to 0.1% of colchicine's application on tissue culture media. This research was conducted at the Botanical Laboratory of the Biology Department, Faculty of  Mathematics and Natural Sciences, University of Lampung. This study compared cytology with the Squash method between root tip cells of Kepok Abu banana's plantlets after 0.1% of colchicine addition with control. Data were analyzed descriptively and displayed in tables and bar charts. The results showed that 0.1% of colchicine caused mitotic abnormalities and increased the number of chromosomes. The control group resulted 2n = 3x, and the group with 0.1% of colchicine's treatment is 2n = 3x + 4. The mitotic index decreased, and the average number of roots was less, but the size was longer than the control. It can be concluded that 0.1% of colchicine can induce polyploid cells in Kepok Abu Banana plantlets.
      PubDate: 2021-12-31
      DOI: 10.24042/biosfer.v12i2.8501
      Issue No: Vol. 12, No. 2 (2021)
       
 
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