The purpose of this research is to know the response of jabon seeds germination against combustion and ilumination. The design that is used is RAL with 2 factors in it. The first is from the duration of combustion and the second is from the illumination treatment. Based on the design, there are 10 combination of treatments and every treatment will be done 3 times so there will be 30 experiments for the total. The parameter that is observed is the duration of jabon seed germinating and the length of jabon’s root. The result of this research showed that the combustion factor, the illumination factor, and the interaction between combustion and illumination is mattered to the duration of jabon seed germinating. While the length of jabon’s root depends with the combustion factor and the illumination factor. The interaction between the duration of combustion and illumination will not affect the length of jabon’s root at all.

Jabon (Anthocephalus cadamba [Roxb] Miq.) is one type of tree that has a high prospect for industrial plantations and reforestation in Indonesia, due to its very fast growth and relatively easy silvicultural treatment. The growth of a plant is strongly influenced by photosynthesis. The process of photosynthesis can take place because of the presence of pigments called chlorophyll. The formation of chlorophyll is influenced by environmental factors. Therefore, studies have been carried out on the chlorophyll content of Jabon leaves in different locations. This research was conducted from March to May 2019. The samples came from the Sungai Nyalo, Pesisir Selatan, and Lubuk Alung, Padang Pariaman. While the chlorophyll content of Jabon leaves was tested at the Laboratory of Plant Physiology, Department of Biology, FMIPA UNP. This research is a descriptive study that was analyzed by the T test at a significant level of 5%. The results showed that there were differences in the chlorophyll content of Jabon leaves in the Sungai Nyalo, Pesisir Selatan with value 44,26 (mg/g) and Lubuk Alung, Padang Pariaman with value 19,45 (mg/g).

This study aims to determine student’s perceptions of  SMAN 2 Painan, because it has not been examined how students think about practicum. The type of research is descriptive and used  quantitative approachment. The population of this study was class XI sain of SMA 2 Painan with propotional random sampling technique. The sample was 60 students.Thedatacollection techniqethrough representatives, observation and, questionnaires. The results showed that the practicum preparation of students was good74.80%, the implementation of students was very good  83.00% and the practical closing stage of students was good 79.00%.

Education in the 21st century aims to change the learning paradigm from teacher-centered to student-centered in order to improve student learning outcomes. Hence, a learning model is needed to improve the students' ability to solve problems by paying attention to their academic ability. This study aims to determine the effect of using the student academic ability-based problem solving and 5E cycle learning models on the student learning outcomes in addictive materials and addictive substances. This study used an experimental method with a 2x2 factorial design. The population in this study was all students of grade VIII SMPN 18 Padang. This study's sample was chosen using the purposive sampling technique, the data collection techniques for the student learning outcomes used to test techniques at the end of learning. The data analysis was performed by using the prerequisite tests (normality and homogeneity tests) and the hypothesis tests using 2-way ANOVA and continued with Bonferroni advanced test. The results show that:  There is an interaction between the problem-solving model and the academic ability-based 5E Cycle learning model on the student learning outcomes, but there is no significant difference in learning outcomes between the problem-solving model and the 5E learning cycle model. There is an effect on the academic ability towards the student learning outcomes. There is no difference in the student learning outcomes between students with high academic ability in the two sample classes. There is no difference between the students with low academic ability in the two sample classes.

Sauerkraut (suerkhol) is the result of lactic acid fermentation of chopped white cabbage with a length of about 20 cm and a width of 2 mm to 5 mm. Based on research that has been done successfully isolated 17 lactic acid bacteria isolates from Sauerkaraut. Chili has a unique taste and contains alkaloid compounds such as capsaicin, with this content it is hoped that chili can be a source of nutrition for lactic acid bacteria (LAB). Lactic acid bacteria have an essential role in almost all fermentation processes of food and beverages, such as dairy products and probiotic drinks such as yogurt. Then this research aims to Isolate preliminary counting of total LAB from Sauerkraut with the addition of chili. Isolation of LAB from Sauerkraut was isolated by pour plate method using MRSA (Man Ragosa Sharpe Agar) selective medium. This study was an experimental study using a completely randomized design (CRD) with five additional treatments of chili slices (control, 5%, 10%, 15%, and 20%) and three replications. Samples according to the treatment were fermented for four days. The total number of bacteria was observed every day with different samples. Bacteria were isolated and grown on MRSA media. Data were analyzed by analysis of variance (ANOVA) at the 5% level and DMRT follow-up test. The total amount of LAB in sauerkraut was affected by the addition of chili slices. Total LAB highest found in the addition of sliced chili 20% (65.18 × 10 8 CFU/ml) and the lowest was found in controls (0.01 ×10 8 CFU/ml). Maximal P growth LAB in the process of fermentation of sauerkraut in the gain on the third day of fermentation for all treatments. The provision of chili slices can increase the total amount of LAB in sauerkraut fermentation.