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Journal : BioCONCETTA

ANALISIS KEMAMPUAN BERPIKIR TINGKAT TINGGI PADA MATERI SISTEM PERTAHANAN TUBUH SISWA KELAS XI SMA yulianis, Yulianis; Maharani, Ade Dewi; Susanti, Silvi
Jurnal Bioconcetta Vol 5, No 2 (2019): Sinta 4
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/bc.2019.v5i2.3789

Abstract

This study aims to determine student's high-level thinking skills on the body's defense system topics. Type of research is descriptive qualitative with a population of students of all grade XII MIPA Mathematics and natural sciences totaling 195 people. The sample in this study was taken by the Random Sampling technique, amounting to 39 people. The type of data collection used is a written test consisting of 24 questions consisting of taxonomic levels C4, C5, and C6. Data of high-level thinking skills obtained from the critical thinking skills test by 34%, creative thinking by 52%, problem-solving 30% and decision making by 35%. The result of the ability to analyze by 44%, evaluate by 29% and create by 27%. Based on the results of the study it can be concluded that the ability to think of high-level students is categorized as not good.
INDIKATOR HISTOPATOLOGI PENCEMARAN AIR PADA INSANG IKAN NILA (Oreochormis niloticus L) Mandia, Sayati; Susanti, Silvi; Maharani, Ade Dewi
Jurnal Bioconcetta Vol 6, No 2 (2020): Sinta 4
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/bc.2020.v6i2.4147

Abstract

Tujuan penelitian ini adalah untuk melihat efek pencemaran perairan terhadap ikan melalui observasi preparat histologis insang ikan nila (Oreochormis niloticus L). Penelitian dilakukan pada Bulan Januari 2017. Jenis penelitian ini adalah penelitian kualitatif menggunakan metode observasi langsung terhadap struktur insang ikan nila. Teknik pengambilan sampel adalah purposive sampling pada 3 lokasi di Danau Maninjau. Pembuatan preparat menggunakan metode paraffin dan pewarnaan Haematoxylin-Eosin di Laboratorium Balai Veteriner, Bukittinggi. Hasil pengamatan struktur histologi insang menunjukkan adanya perubahan struktur histologi berupa hipertropi, fusi lamella, kerusakan struktur lamella hingga hilangnya struktur lamella. Dapat disimpulkan bahwa efek pencemaran perairan dapat mengakibatkan perubahan terhadap struktur histologi insang ikan nila.