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Lussana Rossita Dewi
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Bioma : Jurnal Ilmiah Biologi
Published by Universitas PGRI Semarang
ISSN : 20865481     EISSN : 25499890     DOI : https://doi.org/10.26877
Core Subject : Science, Education, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology
Jurnal Ilmiah Biologi focuses on the publication of result’s research related with the major of biology and biology education. For the major of biology, including systematics, physiology and metabolism, ecology, bioconservation, cell and developmental biology, microbiology, genetics, molecular biology, biotechnology, and bioinformatics. For the major of biology education, including biology curriculum, teaching biology, instructional media, and assessment.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 20 Documents
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Search results for , issue "Vol. 13 No. 1 (2024): April 2024" : 20 Documents clear
DETECTION OF MICROPLASTICS IN BLOOD CLAM (Tegillarca granosa) AND GREEN MUSSEL (Perna viridis) FROM BERINGHARJO MARKET, YOGYAKARTA CITY Nurul Suwartiningsih; Shabrina Lailani; Adhita Sri Prabakusuma; Dian Eka Wijayanti
BIOMA : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2024): April 2024
Publisher : LPPM Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v13i1.324

Abstract

Plastic is one of the main pollutants in the ocean due to its persistent nature. Plastic in waters can be broken down into pieces <5 mm in size, called microplastics, and enter the bodies of aquatic biota such as shellfish. The objectives of this research was to analyze the abundance and identify the characteristics of microplastics in blood clam and green mussel from Pasar Beringharjo, Yogyakarta City. The method in this research is to sample shellfish from Pasar Beringharjo. The shellfish samples obtained had their meat removed and soaked in 10% KOH for 3 days. The isolation results were filtered and the microplastics obtained were observed under a light microscope to determine their abundance and characteristics. The polymers that make up microplastics are analyzed by FTIR. The abundance and characteristics of microplastics between shellfish kinds were compared using the Mann Whitney test. The results showed that the abundance of microplastics in blood clam (average 839.25 ± 144.24 microplastics/individual) was higher compared to green mussel (average 703.75 ± 159.21 microplastics/individual), but not significantly different (p>0.05). The form of microplastic that dominates in both kinds of shellfish is fragments. The most common color of microplastics found in both kinds of shellfish was black and brown. The size of microplastics in both kinds of shellfish is dominated by the range 0-100 µm. FTIR results indicate the type of nylon polymer (polyamide). Microplastics in blood clam and green mussel from Pasar Beringharjo, Yogyakarta City have almost the same abundance and characteristics.
DEVELOPING A MULTIMEDIA POWERPOINT PRESENTATION ON THE HUMAN CIRCULATORY SYSTEM FOR JUNIOR HIGH SCHOOL STUDENTS IN PAPUA Ibnu Rusid; I Nyoman Sudana Degeng; Nurmida Catherine Sitompul
BIOMA : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2024): April 2024
Publisher : LPPM Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v13i1.361

Abstract

A biology curriculum consists of several topics that should be taught using appropriate media based on the type of information. The use of Multimedia PowerPoint is chosen because it is accessible without the need for an internet connection, making it a suitable solution for schools in Papua that lack infrastructure. This research aims to develop a Multimedia PowerPoint presentation on the Human Circulatory System for Junior High School students in Papua, with the goal of enhancing students' understanding of biology. The research method used is Research and Development, following the procedure outlined in the Borg & Gall Model. The developed product was reviewed by several experts and deemed viable. Subsequent assessment by students a yielded positive result. Questionnaires were used for assessment, and data analysis was conducted using percentages. The results of the development of the Multimedia PowerPoint on the Human Circulatory System are as follows: (1) The average assessment from material/content experts is 93%. (2) The average assessment from media experts is 100%. (3) The average assessment from design experts is 89%. (4) The average assessment from individual trials is 88%. (5) The average assessment from small group trials, is 90%. (6) The average assessment from large group trials is 91%. In conclusion, the Multimedia PowerPoint is a feasible instructional media for teaching the Human Circulatory System to Junior High School students, particularly in the Papua region.
THE HEAVY LOAD OF THE BACKPACK ON THE SHOULDER POSITION AT THE AGE OF 12-15 YEARS AT SMPN 56 SURABAYA Emilia Devi Dwi Rianti; Wahyuni Dyah Parmasari; Ayly Soekanto
BIOMA : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2024): April 2024
Publisher : LPPM Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v13i1.375

Abstract

Using backpacks causes many problems for the body and has a negative impact on the user. Continuous use of a backpack will cause irreversible changes to the user. The heavy load on a backpack doesn't just have an impact on shoulder pain. Analytical observational method with a cross-sectional approach, the research was carried out by weighing the bag, distributing questionnaires to assess the length of time the bag was used and age, and measuring the position of the right and left shoulders using a measuring scale. Results; bag weighing ± 3.52 kg with a minimum bag weight of 1.90 kg and a maximum of 7.6 kg. using the bag on average ±27.25 minutes, with a minimum time of 5 minutes and a maximum time of 120 minutes. The average left shoulder posture is ± 124.28, the minimum value is 108 and the maximum value is 145. The average right shoulder posture is ± 123.50, the minimum value is 107 and the maximum value is 141. Conclusion; there is no relationship between the weight of the bag used by the respondent and the posture of the respondent's right shoulder, as evidenced by the resulting significance value of 0.607 <0.05, there is no relationship between the weight of the bag used by the respondent and the posture of the respondent's left shoulder, as evidenced by the resulting significance value of 0.848 < 0.05, the weight of the bag used is still normal and has a value below 10% of the student's body weight.
INDUCTION ENDOSPORE FORMATION OF Bacillus subtilis KM16 AS A PROBIOTIC CANDIDATE BY OPTIMIZATION OF THE GROWTH CONDITIONS Stella Magdalena; Adelaide Geraldine; Yogiara
BIOMA : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2024): April 2024
Publisher : LPPM Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v13i1.418

Abstract

Probiotics are living microorganisms which have beneficial effects. One of the benefits is enhancing immunity. Therefore, probiotics are often supplemented into food, medical, and aquaculture products. B. subtilis KM16 as endospore-producing bacteria have been known to increase probiotic resistance to confront the unstable conditions of the digestive tract. Spore formation of Bacillus is supported by the optimal condition of growth medium and incubation periods. The sufficient availability of carbon, nitrogen, and mineral source in the growth medium, and environmental conditions can support the formation of optimal endospores. This research aimed to determine the suitable sugar composition of a medium and optimum incubation time suitable for endospores formation of B. subtilis KM16. Glucose and maltose were utilized as a carbon source in several concentration as a growth medium for B. subtilis KM 16. The incubation time was 48 and 72 hours. The viable number of vegetative cells was not significantly different for the type of sugar and incubation periods. Based on the glucose concentration, 0.2% glucose exhibited the uppermost number of cells, while 1% glucose concentration caused the decrease of vegetative cells. In this study, 0.2% glucose with 48 hours incubation period showed the highest percentage of sporulation frequencies, up to 48%, but it was not significantly different from the other glucose concentration. The medium that contains 0.2% glucose with 48 hours incubation period is the best medium for the utilization of B. subtilis KM16 cells and spores as probiotic candidates.
THE URGENCY OF DEVELOPING STUDENT’S HABITS OF MIND IN HIGH SCHOOL BIOLOGY LEARNING IN BANDUNG Ghurrotul Bariroh; Diana Rochintaniawati; Eni Nuraeni; Mimin Nurjhani Kusumastuti
BIOMA : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2024): April 2024
Publisher : LPPM Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v13i1.660

Abstract

Habits of mind is one of the dimensions of long-term learning that allow productive actions to occur and can produce positive student character in solving problems in their lives. The importance of habits of mind is in contrast to the ability of habits of mind of students in one of the high schools in Bandung City which is still low. Based on this, the researcher aims to analyze the biology learning process carried out by teachers to further understand the factors that influence students' habits of mind. The method used in this research is quantitative descriptive. The sample was chosen using convenience sampling, so that 34 samples were obtained from class X students and biology teacher at one of the state high schools in Bandung City. The research results show that the low level of students' habits of mind is because teacher has not implemented how to develop students' habits of mind in classroom learning. Differentiated learning, student centers, reflection activities, and learning independence in using resources are the next researchers' recommendations for interventions to improve students' habits of mind.
MOLLUSCAN DIVERSITY THE MANGROVE ECOSYSTEM OF TARAKAN ISLAND INDONESIA Bimo Aji Nugroho; Erisa Ayu Waspadi Putri
BIOMA : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2024): April 2024
Publisher : LPPM Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v13i1.661

Abstract

Mangrove in Tarakan coast encounter various underlined threat named pollution, habitat destruction, and the swelling of human population impending the existence of Molluscan communities. Molluscan is an essential component of Mangrove ecosystem since it could be as predator, herbivore, detritivore, and biofilter as well. However, there only minimum study found investigate the impact of Mangrove. This study, which was conducted from March to August 2023 in five mangrove regions of Tarakan Island, uncovered the distribution of 54 molluscan species, of which 46 were gastropods and 8 were bivalves. This study has identified a remarkable number of species, among the greatest among mangrove ecosystems in Indonesia. Additionally, this study provides an initial account of the distribution of gastropods in the mangrove region of Tarakan Island. The region north of Tarakan Island known as the Juwata mangrove forest harbors the greatest variety of molluscan. A comprehensive documentation of the molluscan species diversity in the mangrove ecosystem adjacent to Tarakan Island's coast has been compiled in order to furnish conservation management with fundamental data that is practical and beneficial.
PBL-TARL-CRT: INTEGRATING INNOVATIVE APPROACHES TO IMPROVE SCIENCE LEARNING OUTCOMES IN GRADE 8 Mellyaning Oktaviani Sonya Kirana Sari Sonya; Harjono Harjono
BIOMA : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2024): April 2024
Publisher : LPPM Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v13i1.693

Abstract

This study explores the integration of three innovative learning approaches, namely Problem-Based Learning (PBL), Teaching at the Right Level (TaRL), and Culturally Responsive Teaching (CRT), in improving learning outcomes in Science in grade 8. In education as a pillar of state-building and character-building, these approaches provide a foundation for effective and meaningful learning. PBL places students as agents of learning by providing real challenges, while TaRL adapts learning to students' ability levels, and CRT utilizes students' cultures and experiences for more meaningful learning. An experiment at Junior High School 25 Semarang showed significant improvements in student learning outcomes, learning motivation, and student character. Quantitative analysis confirmed the improvement in learning outcomes, while interviews revealed positive changes in students' learning motivation and character. However, challenges in learning implementation were also shown, including the need to increase diversity in teaching methods, pay attention to students' needs, and create an interactive learning environment. This study shows that the integration of PBL, TaRL, and CRT is promising in improving science learning outcomes and shaping students' characters. However, continuous efforts to improve the quality of learning and the role of teachers are essential to achieving optimal learning goals and creating a bright and characterful generation.
DEVELOPMENT OF SCIENCE LEARNING DEVICES ORIENTED ESD ON ENVIRONMENTAL POLLUTION MATERIALS TO IMPROVE STUDENTS' CRITICAL THINKING SKILLS AND ENVIRONMENTAL LITERACY Tahmid; Nur khoiri; M. Syaiful Hayat
BIOMA : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2024): April 2024
Publisher : LPPM Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v13i1.823

Abstract

This research aims to develop Education for Sustainable Development (ESD)-oriented science learning tools on environmental pollution material to improve critical thinking skills and environmental literacy for junior high school students. This research is development research (R&D) using a 4D model which includes the define, design, develop and disseminate stages. The tools developed consist of Teaching Modules, Student Worksheets, learning media, and evaluation instruments. Expert validation results show the device is feasible with an average score of 4.2/5. In a limited trial at SMP Negeri 2 Bojong Tegal, the implementation of the Teaching Module was 89%, 81% of students were actively involved, 87% gave positive responses. There was an increase in students' critical thinking skills (average 80.2) and environmental literacy (average 84.5). Success was supported by the application of the ESD approach with project learning, case studies, group discussions, and contextual-interactive media. Implementation of the Independent Curriculum with Teaching Modules and ATP increases student learning independence. The constraints of limited time and inadequate facilities were overcome by efficient time management and teacher creativity. Overall, the tools are valid, practical, effective, in accordance with the Independent Curriculum and 21st century learning with high-level thinking skills, environmental literacy and learning technology.
INDUCTION OF DROUGHT RESISTANCE IN MELON (Cucumis melo L.) M15 WITH HORMOPRIMING BRASSINOSTEROID BASED ON MORFOLOGY, ANATOMY, AND PHYSIOLOGY ASPECTS Arif Nur Rifki Rifki; Solichatun; Ari Pitoyo
BIOMA : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2024): April 2024
Publisher : LPPM Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v13i1.893

Abstract

Melon productivity in Indonesia has been declining. Global climate change is affecting the productivity of melons. Long-term droughts have contributed to a reduction in plant growth and development. Hormopriming is an alternative to increase the germination and growth of melon plants by soaking seeds in a solution of plant growth regulators. Brassinosteroid can enhance germination and plant tolerance under drought conditions. The objective of this research is to examine the impact of brassinosteroid hormopriming treatment on the germination and growth of melon plants subjected to various degrees of drought stress. The study utilized a two-factor fully randomized design. The brassinosteroid concentrations used were 0, 0.05, 0.10, and 0.15 ppm. Media with different water capacities of 75%, 50%, and 25% Space Capacity (SC) were used to test drought stress resistance. Water capacities were examined using the gravimetric method. This study's findings suggest that treating melon plants with brassinosteroid variations can induce drought resistance in M15 melons. A brassinosteroid concentration of 0.15 ppm is the best concentration, as it can increase all parameters of plant growth and adaptation under each variation of water availability provided. The findings of this study can serve as a reference for melon cultivators constrained by dry land conditions to increase the efficiency of cultivation.
OPTIMIZING FIXATION DURATION FOR ENHANCED CLARITY IN Pediculus humanus-capitis WHOLE MOUNT PREPARATIONS USING 10% KOH AT 70°C Tika putri agustina; Musma Rukmana; Hasmiati; Fernando Andre Watung
BIOMA : Jurnal Ilmiah Biologi Vol. 13 No. 1 (2024): April 2024
Publisher : LPPM Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v13i1.1041

Abstract

This study evaluates the optimal fixation duration using 10% potassium hydroxide (KOH) at 70°C for whole mount preparations of Pediculus humanus capitis (head lice). Accurate head lice identification is crucial for effective public health management. Specimens were fixed for 20, 25, 30, 35, and 40 minutes at 70°C, then processed through rinsing, acetic acid treatment, dehydration, and clearing before mounting for microscopic examination. Results showed that 25 minutes of fixation provided the clearest and most detailed preparations. This duration effectively achieved tissue dehydration and clarification without significant damage. Fixation for 20 minutes was insufficient, resulting in opaque specimens due to incomplete KOH diffusion. Conversely, 40 minutes of fixation caused over-fixation, leading to tissue damage and poorer color quality. The study underscores the importance of finding the right fixation duration. While shorter times are inadequate, longer durations can degrade specimen quality. A 25-minute fixation at 70°C is optimal for balancing clarity and structural preservation, improving head lice identification. This method enhances the quality of whole mount preparations and provides practical guidance for accurate and reliable ectoparasite examination in clinical and research settings.

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