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Jurnal Pembelajaran dan Biologi Nukleus
Published by Universitas Labuhanbatu
ISSN : 24429481     EISSN : 26857332     DOI : https://doi.org/10.36987/jpbn
Core Subject : Science, Education, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media
Jurnal Pendidikan Biologi merupakan jurnal elektronik yang merupakan wadah penerbitan artikel penelitian original yang terkait dengan penelitian pendidikan biologi. Jurnal ini dikelola oleh Program Studi Pendidikan Biologidibawah naungan LPPM Universitas Labuhanbatu. Jurnal ini diterbitkan dua kali dalam setahun pada bulan Maret dan September. Jurnal ini menyajikan hasil penelitian dibidang Pendidikan Biologi dan sains Biologi.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 437 Documents
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Viability Test and Polyethylene Glycol (PEG) Soaking Factor of Soybean Seeds Due to Shading Stress Purba, Deddy Wahyudin; Suswati, Suswati; Noer, Zoelhery; Adisty, Fanisa Dwi
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 10, No 3: Jurnal Pembelajaran Dan Biologi Nukleus November 2024
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v10i3.5927

Abstract

Soybeans are a type of agricultural crop commodity in Indonesia that has benefits for society, especially as a source of vegetable protein. The aim of this research is to measure the viability test of soybean seeds and the soaking factor of polyethylene glycol due to shade stress. The research was carried out in the Tissue Culture Laboratory at Asahan University from December 2023 to January 2024. The researchers used a completely randomized factorial design (CRD) with 2 factors: first, soybean variety due to shade stress consisting of four levels, including V1 = Dena 1, V2 = Dena 2 , V3 = Denasa 1 and V4 = Denasa-2. The second factor is the duration of soaking in polyethylene glycol with a concentration of 7.5% consisting of four levels (P0) (control), (P1) 3 hours, (P2) 5 hours, (P3) 7 hours. Observed variables consist of maximum growth potential, germination capacity (%), growth simultaneity (%) and vigor index. Research data was analyzed using variance analysis procedures to determine whether there was an effect of each treatment. The soybean seed variety treatment was effective on the maximum growth potential of the Dena-1 V1 variety (96.67%), germination capacity (57.08%), growth simultaneity (59.17%) and vigor index (70.83%). The long soaking treatment of Polyethylen Glycol (PEG) had no significant effect on maximum growth potential, germination capacity and vigor index. but the real influence on the simultaneity of growth with results is P2 (5 hours) 44.17%. There is no interaction various seed varieties and the length of soaking in Polyethylen Glycol (PEG)
Website Development for Environmental Pollution Topics Based on Inquiry Learning Model Sopian, Iyan; Rubini, Bibin; Pursitasari, Indarini Dwi
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 10, No 3: Jurnal Pembelajaran Dan Biologi Nukleus November 2024
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v10i3.6121

Abstract

Various online media platforms, such as Google Classroom, Zoom, and WhatsApp, have been widely utilized to optimize teaching and learning activities. However, these platforms have not yet integrated inquiry-based learning into the science education process, resulting in limited engagement of students' critical thinking skills. Consequently, there is a need to develop an Inquiry-Based Environmental Pollution Learning Website (WPPLI) as a learning medium to address students' needs for more effective learning. This study aims to: (1) determine the feasibility of the WPPLI as an educational tool, and (2) analyze teachers' and students' responses to the WPPLI. This research employs a Research and Development (R&D) methodology, utilizing the ADDIE (Analyze, Design, Develop, Implement, Evaluate) design model. Data were collected through media and content expert validation forms, as well as teacher and student response questionnaires. The results indicate that the WPPLI has been deemed suitable as a learning medium based on validation by media and content experts, with respective scores of 94.02% and 97.77%, both categorized as "Highly Suitable." Field testing of the WPPLI revealed average responses of 96.83% from teachers and 81.55% from students, both falling within the "Excellent" category
Role of Leguminosae Root Fermentation on Vegetative Growth of Cayenne Pepper (Capsicum frutescens L.) after Flooding Stress Kurniahu, Hesti; Pahlevi, Muhammad Rizza; Andriani, Riska
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 10, No 3: Jurnal Pembelajaran Dan Biologi Nukleus November 2024
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v10i3.6349

Abstract

Flooded cayenne pepper (Capsicum frutescens L.) experiences oxidative stress causing growth disturbances, delayed and reduced yields, and even death. The success of cayenne pepper in the recovery process determines the overall success of cayenne cultivation after flooding stress. Leguminosae roots are associated with rhizosphere bacteria which are beneficial for the recovery process of cayenne pepper after flooding stress. This research used a Completely Randomized Design (CRD) with 5 treatments, namely T1 cayenne pepper without flooding and biofertilizer, T2 cayenne peppers without flooding and biofertilizer applied, T3 cayenne peppers flooded without biofertilizer application, T4 cayenne peppers flooded and 50% biofertilizer applied, T5 cayenne peppers flooded and 100% biofertilizer applied. Partial flooding was carried out for 48 hours and biofertilizer application was carried out after 24 hours of drainage. The results showed that the application of biofertilizer had a significant effect on the vegetative growth of cayenne pepper after flooding stress on the parameter of average number of leaves when applying 100% biofertilizer. This research concludes that Leguminosae root fermentation plays a role in the vegetative growth of cayenne pepper after flooding stress, so it has the potential to be used as a biofertilizer
Clay Mask Formulation of Coconut Dregs and Virgin Coconut Oil as an Antibacterial Against Propionibacterium acnes Sitanggang, Ketrin Evelia Pinondang; Zega, Ningsih Prastika; Br. Manurung, Wulan Anggreni; Silaban, Elya Cytra Bonaparti; Simanjuntak, Helen Anjelina
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 10, No 3: Jurnal Pembelajaran Dan Biologi Nukleus November 2024
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v10i3.6041

Abstract

Beauty and healthy skin as well as skin problems such as acne are challenges for the pharmaceutical sector in innovating to produce clay mask cosmetic products made from coconut dregs. Apart from maintaining healthy skin, coconut dregs clay mask products also maintain environmental health. Galactomannan contained in coconut dregs acts as a thickener, stabilizer, emulsifier and additive. The lauric acid contained in VCO acts as an antibacterial, antiviral and antiprotozoal. The combination of coconut dregs and VCO in a clay mask is more optimal as a cosmetic product. The aim of the research is to utilize coconut dregs waste into pharmaceutical products, produce a clay mask made from coconut dregs with a combination of VCO which has the potential to act as an antibacterial and produce a clay mask product that is effective as an anti-acne. The method was carried out by preparing coconut dregs flour, making various clay mask formulations: F0, F1, F2, F3 and F4, testing the stability of the clay mask product and testing the antibacterial properties of the clay mask against P. acnes using the well diffusion method. The results show that the organoleptic formulas are semi-solid, the colors are white, cream, brownish cream and light brown, while the odor ranges from odorless to vanilla, all formulas are homogeneous, pH 7, spreadability and dryness are stable and antibacterial is in the medium to strong category. The conclusion shows that F4 is more effective as an antibacterial against Propionibacterium acnes with an inhibition zone of 16.21 ± 0.85 mm and the clay mask preparation has the potential as an anti-acne
Validity and Practicality Test of STEAM-Based E-Booklet on Food Microbiology Course Dalimunthe, Rizka Ramadani; Hasruddin, Hasruddin; Sudibyo, Mufti
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 10, No 3: Jurnal Pembelajaran Dan Biologi Nukleus November 2024
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v10i3.6129

Abstract

The learning process in food microbiology courses generally uses learning media in the form of powerpoint slides which are still general in nature and have not been able to mobilize students' critical thinking skills. As a result, the student's ability score obtained is in the low category. This study aims to determine the level of validity and practicality of STEAM-based E-booklet media. This type of research is research and development using the ADDIE development model which consists of five stages, but in this case it is carried out until the development stage. The validity test was carried out by giving validation sheets to six experts while the practicality test was carried out by giving questionnaire sheets to lecturers and students. The results of the validity test by material expert validators, media experts and learning design experts obtained an average percentage of 88% with a very valid category. Practicallity test by course lecturers obtained an average percentage of 88,5% and student assessment of 97%. The E-booklet can be used as a learning media for students
Development of Instrument Based on The Higher Order Thinking Skills (HOTS) to Practice of Critical Thinking Ability of High School Students on The Motions Systems Material Ritonga, Eka Wahyu Putri M.; Jayanti, Ummi Nur Afinni Dwi
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 10, No 3: Jurnal Pembelajaran Dan Biologi Nukleus November 2024
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v10i3.6226

Abstract

This research aims to develop a valid and practical Higher Order Thinking Skills (HOTS)-based instrument that is used to measure or train students' critical thinking abilities. The research uses the Bord and Gall model research and development (R&D) method.  The research instruments are validation sheets (validation sheets from instrument experts and evaluation experts), questionnaires (teacher responses), and tests (effectiveness). The Second grade students (Class XI MIPA) of senior high school SMA Gajah Mada as subjects. Testing was carried out on student and biology teachers as respondents for the practicality of the module using student and biology teacher response questionnaire sheets. Based on the results of material expert validation, it was found that the expert validator's evaluation demonstrated the validity of the instrument by classifying it as appropriate for use based on an analysis of the material, construction, and linguistic aspects. This instrument also meets the reliability criteria. Multiple choice questions have a medium level of difficulty, good discriminating power
Antennal Sensilla of Queen and Worker Giant Honey Bee Apis dorsata and Stingless Bee Trigona laeviceps in Difference of Density and Ultramorphometric Analysis Hutabarat, Desmina Kristiani; Raffiudin, Rika; Juliandi, Berry
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 10, No 3: Jurnal Pembelajaran Dan Biologi Nukleus November 2024
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v10i3.5502

Abstract

Antennal sensilla receive many stimuli from the environment. Thus, it is crucial to study the structure of antennal sensilla, especially in the eusocial bees, such as the honey bee Apis dorsata and stingless bee Trigona laeviceps; both have females, queens and workers with different tasks in their colonies. We aimed this study to describe the types, density, distribution, and ultramorphometric measurements of antennal sensilla of queens and workers of A. dorsata and T. laeviceps. The antennae of ten workers and one queen of A. dorsata and T. laeviceps were analyses using scanning electron microscopy. This study revealed two new sensilla types, chaetica and ceoloconica of  A. dorsata workers. We also describe seven new types of sensilla of T. laeviceps workers and queen: trichodea, placodea, basiconica, campaniformia, ampullacea, chaetica, and coeloconica. The current study found caste differentiation in the densities of antennal sensilla: the density of antennal sensilla in the workers is higher compared to the queen, both in A. dorsata and T. laeviceps. Age polyethism in the worker caste presumably shapes the diversity of sensilla. Further, asymmetry distribution was observed in the anterior and posterior sides of the antenna, with the anterior sensilla having nearly twice the density of sensilla compared to the posterior side, in both species of worker caste. In ultramorphometric studies we found that trichodea in A. dorsata workers is larger than that of  T. laeviceps workers, while interestingly, the placodea of the giant honey bee A. dorsata is smaller than that of the smaller T. laeviceps.
Influence of Organic Liquid Fertilizer on The Growth and Production of Purple Eggplant (Solanum melongena) Br Sembiring, Agnes Refiana; Hakim, Tharmizi; Sembiring, Desi Sri Pasca Sari
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 10, No 3: Jurnal Pembelajaran Dan Biologi Nukleus November 2024
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v10i3.6222

Abstract

Eggplant production in Indonesia is still low and only accounts for 1% of the world's needs, this is because the cultivation culture is still not intensive. Infertile soil is also a factor in low eggplant production. In order for growth to be good, it must look at the ideal growing conditions and nutrients in the soil. This study aims to determine the optimal concentration of liquid organic fertilizer in increasing the growth and production of purple eggplant plants. The research design applied is a non-factorial Randomized Group Design (RGD) consisting of 1 factor, namely Liquid Organic Fertilizer, with 4 experimental levels, namely P0 (0 ml /l water), P1 (50 ml /l water), P2 (100 ml /l water), P3 (150 ml /l water). The results showed that the concentration of liquid organic fertilizer had a very significant effect on all variables observed, except the number of fruits, fruit weight and production weight were not significantly different. LOF treatment with a concentration of 150 ml/l water gave the best results on the parameters of plant height, stem diameter, number of flowers, number of fruits, fruit length, fruit weight, production weight and production ha/ton
Utilization of Controlled Oven Drying Method to Produce Export Quality of Coffee Peel and Beans (Coffea arabica L.) Maimunah, Siti; Prayoga, Andre; Aruan, Dyna Grace Romatua; Purba, Roberto Roy
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 10, No 3: Jurnal Pembelajaran Dan Biologi Nukleus November 2024
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v10i3.6327

Abstract

Karo regency as supplier of coffee, especially around Jaranguda village. Coffee is one of Indonesia's leading export commodities. A unique approach is required to enhance both the quantity and quality of coffee. Drying is a crucial step to ensure the peel and coffee beans maintain their quality after harvest. This study aims to determine whether drying using a drying oven has an effect on water content and nutritional information. Post-harvest processing methods included wet sorting, separation of peel and coffee beans, washing, drying, analysis of coffee peel characteristics, and analysis of nutrients in coffee beans. The analysis revealed that the water content of Arabica coffee beans was 1.11 %, while the analysis of nutrients and non-nutrients per 100 g of coffee beans revealed the following: total energy 417.34 kcal, fat energy 72.90 kcal, ash content 4.68 %, carbohydrates 72.17 %, total fat content 8.10 %, protein content 13.94 %, saturated fat 3.70 %, and sodium 6.53 mg. The analysis of coffee peel Simplicia revealed water content of 6.69 %, water-soluble extract content of 25.57 %, ethanol-soluble extract content of 13.79 %, ash content of 1.90 %, and acid-insoluble ash content of 1.43%. Analysis results of the characteristics of coffee peel meet the requirements of the Indonesian Herbal Pharmacopoeia Edition II in 2017. The food label includes nutritional value information, also known as nutrition facts, which details the nutritional content of the food ingredients. This information is crucial as it provides valuable insights and enhances the overall value of the product
Development of Worksheet Based on Search Solve Create and Share (SSCS) on Learning Interest, Science Process Skills and Student Learning Outcomes in Biology Material of First Level (X Class) Senior High School Gultom, Josephine Olivia; Idramsa, Idramsa; Harahap, Fauziyah
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 10, No 2: Jurnal Pembelajaran Dan Biologi Nukleus July 2024
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v10i2.5833

Abstract

This study develops and tests (LKPD) based on search, solve, create, and share (SSCS) in biology learning for class X MIA Semester I at SMA Negeri 5 Medan. To actively assess students' learning interests, science process skills, and learning outcomes at school because this process helps students search, find, and build their knowledge to solve problems. This research is development. Uses 4D development research (Define, Design, Develop, Disseminate). Interviews, material expert validation questionnaires, design validation questionnaires, language validation questionnaires, study field teacher responses to SSCS-based LKPD, student learning interest questionnaires, student science process skills questionnaires, and pretest-posttest assessment sheets were used. Material experts rate material validity as "Very Good/Decent" with an average of 91.75%. Design expert product quality results averaged 87.5% "Good/Decent". Teacher responses on the SSCS-based LKPD averaged 86.25% "Good/Decent". Students are 71% "Interested" in learning in small groups and 88% "Very Interested" in large groups. Science students' process skills averaged 86.67 in the big group and 76.67 in the small group in the "Good/Decent" category. Out of 37 students, 4 had a "Medium" N-gain of 0.7 on the biodiversity and virus meters, whereas 33 had a "High" N-gain of 0.8.

Page 31 of 44 | Total Record : 437

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