Articles
10 Documents
Search results for
, issue
"Vol 12, No 1: April 2023"
:
10 Documents
clear
<![CDATA[Tree Species Diversity at Kebon Rojo, Blitar City ]]>
<![CDATA[Marinda Sari Sofiyana]]>
<![CDATA[ Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023 ]]>
Publisher : <![CDATA[Universitas PGRI Semarang ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26877/bioma.v12i1.11992
<![CDATA[Tree Species Diversity at Kebon Rojo, Blitar City. Kebon Rojo is one of the open green spaces in Blitar City. This area has a variety of vegetation, one of which is trees. Diversity of tree species in this area has not been recorded. This study aims to determine the diversity of tree species at Kebon Rojo. The method used is the Je method by recording and documenting the diversity of trees in this area. The level of diversity was calculated using the Shannon Wiener index. The results of this study revealed that there were 322 trees belonging to 26 families, 36 species. The Shannon Wiener Diversity Index is 3.5. This value indicates the diversity of tree species at Kebon Rojo is high]]>
<![CDATA[Liver Histopathology of Mice Induced by Paracetamol on Administration of Methanol Extract of Laban Tree Bark (Vitex pubescens Vahl.) ]]>
<![CDATA[Wiwit Anggraini]]>;
<![CDATA[Diah Wulandari Rousdy]]>;
<![CDATA[Elvi Rusmiyanto Pancaning Wardoyo]]>
<![CDATA[ Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023 ]]>
Publisher : <![CDATA[Universitas PGRI Semarang ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26877/bioma.v12i1.11664
<![CDATA[Paracetamol metabolism takes place in the liver mediated by CYP450 enzymes and generates NAPQI radicals. The NAPQI radical is highly electrophilic to hepatocyte biomolecules and is therefore capable of inducing liver damage. Laban tree bark (V. pubescens) methanol extract is known to contain antioxidant compounds of flavonoids, saponins, and tannins with an IC50 value of 19.83 g/ml. This study aims to determine the optimal dose of extract that can improve the liver microanatomy of mice induced by toxic dose of paracetamol (TDP). This study used 30 male Swiss strain mice with a body weight of 20-30 g. The treatments given consisted of negative control (paracetamol 105 mg kg-1), positive control (vitamin E 46.8 mg kg-1), and laban extract at a dose of 75; 150; 300; 600 mg kg-1 BW. Liver microanatomy parameters measured included hepatocyte diameter (19.50±0.21 µm), sinusoids (4.39±0.23 µm), and central vein (36.84 ± 1.79 µm). Data were analyzed using one-way ANOVA and Duncan's Multiple Range Test further test was then presented in the form of mean ± standard deviation. The results showed that extract at a dose of 600 mg kg-1 had hepatocyte, sinusoid, and central vein diameters that were not significantly different (p>0.05) with vitamin E.]]>
<![CDATA[Implementation of Standard Operating Procedures In Biology Practicum High School ]]>
<![CDATA[Alfrista Novalia Putri]]>;
<![CDATA[Febrina Ayu Wulandari]]>;
<![CDATA[Arum Wilianti Suparno]]>;
<![CDATA[Arista Mukti Khasanah]]>;
<![CDATA[Tri Eva Rahmadani]]>;
<![CDATA[Much. Fuad Saifuddin]]>;
<![CDATA[Etika Dyah Puspitasari]]>
<![CDATA[ Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023 ]]>
Publisher : <![CDATA[Universitas PGRI Semarang ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26877/bioma.v12i1.12376
<![CDATA[The Laboratory is a room or places equipped with tools and materials suitable for teaching science or implementing science practicum. Laboratory management in terms of organizational structure, activities, and facilities needs to be evaluated to increase awareness of the effectiveness of science learning and increase laboratory safety to the optimum level. This paper aims to determine 1) Standard Operating Procedures and 2) Obstacles in school SOP management. The research method used was descriptive exploratory. The data were collected by conducting interviews, observation, and documentation. The data analysis technique was carried out in descriptive qualitative. The results showed that the Biology Laboratory preparation at three Bantul Regency schools already had a Standard Operating Procedure (SOP). However, some schools have not fulfilled the SOP properly. Of the three schools observed in school C, there is no SOP for storing tools and practicum materials. School B SOP that has not been posted in the open, SOP for occupational health and safety, SOP for procurement of tools or practicum materials, and SOP for purchasing chemicals. School A does not have SOP posted in the open, SOP for storing tools or practicum materials, and procurement of tools or materials.]]>
<![CDATA[Growth of Bacillus spp. Isolated From Nipah Worm Intestine (Namalycastis rhodochorde) With Different Combination of pH and Salinity ]]>
<![CDATA[Rikhsan Kurniatuhadi]]>;
<![CDATA[Ari Hepi Yanti]]>;
<![CDATA[Tri Rima Setyawati]]>;
<![CDATA[Eka Karunia]]>
<![CDATA[ Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023 ]]>
Publisher : <![CDATA[Universitas PGRI Semarang ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26877/bioma.v12i1.14387
<![CDATA[Bacillus spp. (NrLtF1, NrLtF5, and NrLtG2) isolated from the digestive tract of the Nypa palm worm (Namalycastis rhodochorde) were assumed to have growth characteristics according to the habitat conditions of the nypa worm. Nypa worms live in estuary environments that are affected by seawater intrusion. Salinity and pH are two environmental factors affecting gastrointestinal isolates' growth from nypa palm worms. This study aimed to determine the effect of pH and salinity on the media on growth patterns and determine the optimum combination of pH and salinity for Bacillus spp. The study was conducted using a spectrophotometry method using a microplate reader with Glucose Yeast Peptone (GYP) as a medium for bacterial growth. The medium's pH and salinity values were adjusted by adding 5M NaOH and 5M HCl to obtain pH values of 4, 5, 6, and 7, respectively. Addition of NaCl to the growing medium to get salinity values of 5%, 10%, and 15%. Optimization was determined by incubation at a density of 595 nm at a temperature of 31oC for 24 hours. The results showed that Bacillus spp. could grow well at pH 6 with a salinity value of 15%, pH 6 with a salinity value of 10%, and pH 6 with a salinity value of 5% based on contour plot design. The Optimum growth of Bacillus spp. with pH and salinity expects to be a reference for developing feed products based on indigenous nypa palm worms. ]]>
<![CDATA[Organoleptic Test of Eco-enzyme : Fermentation of Banana Peel Waste ]]>
<![CDATA[Juen Carla Warella]]>
<![CDATA[ Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023 ]]>
Publisher : <![CDATA[Universitas PGRI Semarang ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26877/bioma.v12i1.14803
<![CDATA[Prevention of environmental damage can be done by recycling household waste both organic and inorganic. One of them is by making eco-enzymes made from banana peel waste which is found in the environment. This study aims to determine the level of respondents' liking based on organoleptic test variables. This research method is an experiment that includes making eco-enzymes, and organoleptic tests consisting of aroma, color and texture variables. Data analysis was carried out in a qualitative descriptive way by looking at the level of respondents' liking. The results showed that the average respondent chose a brown color with a percentage of 90%, yellow 7%, and colorless 3%. The scent variable respondents chose sour odor by 70% and other aromas 30%. While the texture of all respondents chose the composition of liquid eco-enzyme. This is due to the metabolic activity of microorganisms that result in the breakdown of substrates by bacteria resulting in changes in the aroma, color and texture of banana peels. The conclusion of this study is that the use of banana peel as the basic ingredient for making eco-enzyme affects the respondents' level of liking. Eco-enzyme can be used as a natural fertilizer for plant growth and can reduce household waste.]]>
<![CDATA[The Differences of Male and Female Students’s Problem Solving Ability in Environmental Change Topic Based on Education for Sustainable Development (ESD) ]]>
<![CDATA[Dewi Arum Budianti]]>;
<![CDATA[Ary Susatyo Nugroho]]>;
<![CDATA[Muhammad Syaipul Hayat]]>
<![CDATA[ Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023 ]]>
Publisher : <![CDATA[Universitas PGRI Semarang ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26877/bioma.v12i1.16020
<![CDATA[This study aims to determine the differences between male and female students’s problem solving abilities in environmental change topic based on ESD. This study used pre-experimental method with one group pretest – post test design. This study located at MA Darul Muqorrobin with subjects 30 students of class X who selected using a purposive sampling technique. Generally, female students’s problem solving ability is higher than male student’s, with a final value of 77.7 for male students and 82.3 for female students. Male students have an average total score higher than female students on the problem understanding indicator, namely 7.7 for male students and 7.4 for female students. In the problem-solving design indicator, female students have a higher average total score than male students, namely 6.1 for male students and 6.5 for female students. Female students have an average total score higher than male students on the indicator of carrying out problem solving, namely 5.8 for male students and 6.4 for female students. In the indicators evaluating problem solving, female students have an average total score higher than male students, namely 5.3 for male students and 5.9 for female students. The high female students’s problem solving ability due to the structure of woman’s corpus collasum which thicker than the men’s. Testosterone hormone causes men prefer learning that hands-on. The preoptic region in the men’s hypothalamus is larger than women’s so men can understand problem better than women. The interpretation of the N-Gain value is sufficient, so the learning of environmental change topic based on ESD is effective to improve problem solving ability in both students.]]>
<![CDATA[The Effect of Discovery Learning on The Development and Strengthening of Understanding Basic Concepts in Biology Based on Students’ Experiences ]]>
<![CDATA[Susi Martini Sudibjo]]>
<![CDATA[ Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023 ]]>
Publisher : <![CDATA[Universitas PGRI Semarang ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26877/bioma.v12i1.15868
<![CDATA[The Indonesian government is currently implementing two types of curriculums, namely the 2013 curriculum and the ‘Merdeka belajar’ curriculum which has been implemented for 2 years. Both of these differently named curriculums run together at different academic grades throughout Indonesia. Although they have different names, both curriculums have similarities in the application of their learning process, which is inquiry-based learning. Teachers can apply inquiry-based learning based on the guidelines specified in the curriculum or implement other inquiry-based learning methods, one of which is Wenning's levels of inquiry. This study aims to develop and strengthens the understanding of basic concepts in biology based on the student experience. This study investigates the impact of discovery learning on the development and strengthening of understanding basic concepts in biology, based on the experiences of students. The research aimed to explore the effectiveness of a discovery learning approach in enhancing students' comprehension and retention of fundamental biological principles. This study emphasizes the value of discovery learning as a powerful pedagogical approach for facilitating students' comprehension and mastery of basic concepts in biology. After carrying out the learning process with discovery learning steps, students get reinforcement of the basic concepts of the food digestive system and make it easier for students to carry out the next stage of inquiry.]]>
<![CDATA[The Effect of Air Pollution on The Stomata Characteristics Pigeon Orchid (Dendrobium crumenatum) Leaves, In the Tasikmalaya ]]>
<![CDATA[Nofi rahma Isma yanti]]>;
<![CDATA[Purwati Kuswarini Suprapto]]>;
<![CDATA[Diki Muhamad Chaidir]]>
<![CDATA[ Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023 ]]>
Publisher : <![CDATA[Universitas PGRI Semarang ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26877/bioma.v12i1.15046
<![CDATA[This study aims to determine the effect of air pollution on the stomata characteristics in Pigeon Orchid (Dendrobium crumenatum) leaves in Tasikmalaya. This research is quantitative. The Samples were taken through survey method with purposive sampling technique in the Singaparna Bus Station as an exposed area with the highest air pollution, Sukaraja-Mangunreja street as an exposed area with the moderate air pollution, and Mount Galunggung as an exposed area with the the lowest air pollution. The characteristics of the stomata observed using an Optilab camera type Professional Model Series MTN001 which already has the Image Raster application and previously calibrated with an object glass micrometer at 400 x magnifications. The Data analysed quantitatively and descriptively using one way ANOVA test. The results showed that different levels of air pollution could affect the characteristics of the stomata. Stomata in areas with high air pollution have the highest stomata index and stomata density, namely 8.2% and 326.11/mm2, with the category of medium density and oval stomata shape. Stomata in areas with moderate air pollution have the lower stomata index and stomata density, namely 7.3% and 256.47/mm2, with the low-density category and round stomata shape. Meanwhile, stomata in areas with low air pollution have the lowest stomata index and stomata density, namely 5.7% and 256.47/mm2, which indicate the category of low density and the shape of the stomata is round.]]>
<![CDATA[Diversity Trees Riverside Rindu Hati as Science Teaching Materials Oriented Disaster Mitigation ]]>
<![CDATA[Pegi Gustari]]>;
<![CDATA[Bhakti Karyadi]]>;
<![CDATA[Sutarno Sutarno]]>;
<![CDATA[Deni Parlindungan]]>;
<![CDATA[Rendi Zulni Ekaputri]]>;
<![CDATA[Ariefa Primair Yani]]>;
<![CDATA[Mellyta Uliyandari]]>
<![CDATA[ Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023 ]]>
Publisher : <![CDATA[Universitas PGRI Semarang ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26877/bioma.v12i1.15569
<![CDATA[The diversity of plants that exist on the banks of the Rindu Hati River is overgrown with plants, one of which is a tree-loving plant that has an important role in the river ecosystem and has the potential to mitigate disasters. This study aims to identify Disaster Mitigation Oriented Tree-Habitus Plants on the Rindu Hati Riverbanks which can be used as teaching materials in the form of Learning Unit Books (BUP) to increase understanding of natural science concepts and disaster awareness. Determining the research location using purposive sampling technique and inventory of tree plants using the quadratic method with an area measuring 20 mx 20 m at the tree level, 10 mx 10 m at the pole level, and 5 mx 5 m at the sapling level. Found 18 plant species from 13 families with a total of 137 individuals. These plants have disaster mitigation potential with a diversity index at the tree level reaching 2.674 in the medium category, the pole level reaching 2.432 in the medium category and the sapling level reaching 1.791 in the medium category. Based on these findings, a BUP can be made which can facilitate students in learning about information on tree-loving plants as disaster mitigation.]]>
<![CDATA[Daily Behavior of Red Tilapia (Oreochromis niloticus) Cultivated in Diferent Aeration and Filtration ]]>
<![CDATA[Nurizka Ayu Setiani]]>;
<![CDATA[Kasiyati Kasiyati]]>;
<![CDATA[Sunarno Sunarno]]>;
<![CDATA[Muhammad Anwar Djaelani]]>
<![CDATA[ Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023 ]]>
Publisher : <![CDATA[Universitas PGRI Semarang ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.26877/bioma.v12i1.12196
<![CDATA[Decreased water quality in red tilapia (Oreochromis niloticus) aquaculture indicates that low dissolved oxygen availability will affect fish behavior. One of the efforts to improve water quality is through the addition of aerators and filters. Aerators and filters increase the supply of dissolved oxygen and minimize feed waste in the aquaculture pond water. This study aims to analyze of different aeration and filtration or a combination of the daily behavior patterns of tilapia including eating behavior, aggressive behavior. The study was conducted for 1 month.This study used 24 red tilapia with a length of about 8-12 cm. The research design used in this study was a completely randomized design (CRD) with 4 treatment groups and 6 replications. The treatments were ANF group (use of single aerator without filter), AANF group (use of dual aerator without filter), AF group (use of single aerator with filter), and group AAF (use of dual aerator with filter). The data collected includes the daily behavior of red tilapia and water quality. Analysis of the daily eating, aggressive and comfortable behavior of red tilapia was carried out by observing video recordings and recording behavior recording techniques at intervals of 1-2 minutes based on duration and frequency. The results showed that the use of different aerators and filters or their combination had a significantly different effect (P<0,05) on the daily behavior of red tilapia. The conclusion of this study was the raising used of multiple aerators and filters can improve the quality of aquaculture water so that it has a positive impact on feeding, foraging, and schooling behavior in the growth phase of tilapia. Key words: quality water, aerator, filterd, aily behavior ]]>
