scholarly journals Development and function of membrane systems in plant tissue. [Corn roots and mitochondria]

1980 ◽  
Author(s):  
J. Hanson
Keyword(s):  
Plant Tissue ◽  
Membrane Systems ◽  
Corn Roots ◽  
And Function

scholarly journals Analisis dan Rekonstruksi Komponen Penyusun Lembar Kerja Peserta Didik Struktur dan Fungsi Jaringan Tumbuhan

BIODIK ◽  
2020 ◽  
Vol 6 (2) ◽  
pp. 82-94
Author(s):  
Nadia Nadia ◽  
Bambang Supriatno ◽  
Sri Anggraeni
Keyword(s):  
Plant Tissue ◽  
Knowledge Construction ◽  
Data Interpretation ◽  
Practical Aspect ◽  
Structure And Function ◽  
Plant Structure ◽  
Laboratory Activity ◽  
Conceptual Aspect ◽  
Teachers And Students ◽  
And Function

Student worksheets are guidelines used by teachers and students in practicum activities. This study aims to analyze and reconstruct the students worksheets are less qualified and not in accordance with established standards. This research is a descriptive qualitative analysis research which aims to analyze and reconstruct student worksheets with the 1)Analysis; 2)Try; 3)Reconstruction stage. The analysis was conducted on 6 student worksheet on Plant Network Structure and Function based on the KTSP Curriculum and 2013 Curriculum using the Laboratory Activity Analysis Form instrument and the Vee Diagram scoring table. The trial was conducted at the FPMIPA Plant Structure Laboratory, Universitas Pendidikan Indonesia. Student worksheets  reconstruction is based on the problems found in the conceptual, practical and knowledge construction aspects after analysis and testing. The results showed that there were problems with student worksheets  in the Structure and Function of Plant Tissue from conceptual, practical and knowledge construction aspects. In the conceptual aspect, for the suitability of competence with Basic Competence and suitability of activities with the cognitive level of students, the percentage is only 16.6%. In the practical aspect 66.7% of the student worksheets  analyzed the procedure incorrectly so that the phenomenon objects that appear are not relevant to the objectives / titles of student worksheets . In the aspect of knowledge construction 66.6% of student worksheets  analyzed the questions can be answered without doing practicum and there are no questions about data interpretation, the emergence of a principle and analysis so that drawing conclusions is not based on facts and does not describe the title/purpose. Based on the acquisition of component scores Diagram Vee student worksheets  Structure and Function of Plant Tissue has not reached an ideal score (18). The Vee Diagram component that does not appear at all is knowledge claims (score 0). Abstrak. Lembar kerja siswa merupakan pedoman yang digunakan oleh guru dan siswa dalam kegiatan praktikum. Penelitian ini bertujuan untuk menganalisis dan merekontruksi lembar kerja siswa yang kurang berkualitas dan tidak sesuai dengan standar yang telah ditetapkan. Penelitian ini merupakan penelitian analisis deskriptif kualitatif yang bertujuan untuk menganalisis dan merekontruksi lembar kerja siswa dengan metode ANCOR (Analisis-Coba-Rekontruksi). Analisis dilakukan pada 6 LKS Struktur dan Fungsi Jaringan Tumbuhan berdasarkan Kurikulum KTSP dan Kurikulum 2013 menggunakan instrumen Form Analisis Kegiatan Laboratorium dan tabel penskoran Diagram Vee. Uji coba dilakukan di Laboratorium Struktur Tumbuhan FPMIPA Universitas Pendidikan Indonesia. Rekontruksi LKS dilakukan berdasarkan permasalahan yang ditemukan pada aspek konseptual, praktikal dan kontruksi pengetahuan setelah melakukan analisis dan ujicoba. Hasil penelitian menunjukkan bahwa terdapat permasalahan pada LKS Struktur dan Fungsi Jaringan Tumbuhan dari aspek konseptual, praktikal dan kontruksi pengetahuan. Pada aspek konseptual, untuk kesesuaian kompetensi dengan Kompetensi Dasar dan kesesuaian kegiatan dengan tingkat kognitif siswa, persentasenya hanya 16,6%. Pada aspek praktikal 66,7% dari LKS yang dianalisis prosedurnya tidak tepat sehingga objek fenomena yang muncul tidak relevan dengan tujuan/judul LKS. Pada aspek kontruksi pengetahuan 66,6% dari LKS yang dianalisis pertanyaannya dapat dijawab tanpa melakukan praktikum dan tidak ada pertanyaan mengenai interpretasi data, kemunculan suatu prinsip dan analisis sehingga penarikan kesimpulan tidak berdasarkan fakta dan tidak menggambarkan judul/tujuan. Berdasarkan perolehan skor komponen Diagram Vee LKS Struktur dan Fungsi Jaringan Tumbuhan belum mencapai skor ideal (18). Komponen Diagram Vee yang tidak muncul sama sekali adalah klaim pengetahuan (skor 0).

scholarly journals On a bender—BARs, ESCRTs, COPs, and finally getting your coat

2011 ◽  
Vol 193 (6) ◽  
pp. 963-972 ◽  
Author(s):  
Mark C. Field ◽  
Andrej Sali ◽  
Michael P. Rout
Keyword(s):  
Comparative Genomics ◽  
Protein Complexes ◽  
Eukaryotic Cell ◽  
Intracellular Membrane ◽  
Membrane Systems ◽  
Profound Impact ◽  
Form And Function ◽  
Evolutionary Origins ◽  
And Function ◽  
Internal Architecture

Tremendous variety in form and function is displayed among the intracellular membrane systems of different eukaryotes. Until recently, few clues existed as to how these internal membrane systems had originated and diversified. However, proteomic, structural, and comparative genomics studies together have revealed extensive similarities among many of the protein complexes used in controlling the morphology and trafficking of intracellular membranes. These new insights have had a profound impact on our understanding of the evolutionary origins of the internal architecture of the eukaryotic cell.

scholarly journals Ultrastructure and Differentiation in Chara Sp.I. Vegetative Cells

1967 ◽  
Vol 20 (3) ◽  
pp. 539 ◽  
Author(s):  
JD Pickett-Heaps
Keyword(s):  
Endoplasmic Reticulum ◽  
Cytoplasmic Streaming ◽  
Plant Cells ◽  
Membrane Systems ◽  
Close Apposition ◽  
Vegetative Cells ◽  
Cytoplasmic Inclusions ◽  
Golgi Bodies ◽  
And Function ◽  
Vacuolated Cells

The ultrastructure of young growing cells of Ohara is described. The cells showed many features typical of plant cells. The nuclei of larger cells invariably contained groups of close�packed, heavily staining microtubular elements. Typical wall microtubules were always found, and large internodal cells contained filaments possibly involved in cytoplasmic streaming. Vacuolation in young internodes apparently commenced by extensive dilation of elements of the endoplasmic reticulum. In other cells, close apposition of endoplasmic reticulum to cytoplasmic inclusions indicated possible secretion of material into the organelles had been occurring. Golgi bodies with intercisternal elements were often grouped together, sometimes with interconnected cisternae. Isolated reticulate membrane systems, similar to those found at the reticulate face of golgi bodies, were sometimes seen in vacuolated cells. The golgi bodies might have been involved in vacuolation; they were also seen in association with coated vesicles that appeared to be involved in wall deposition. A large number of different cytoplasmic inclusions were found, whose nature and function is obscure. These sometimes contained crystal.like bodies.

scholarly journals PENGEMBANGAN MEDIA E-LEARNING BERBASIS TWITTER PADA MATERI BIOLOGI STRUKTUR DAN FUNGSI JARINGAN TUMBUHAN

2021 ◽  
Vol 9 (1) ◽  
pp. 53-60
Author(s):  
MARYAMAH MARYAMAH ◽  
EVI ROVIATI
Keyword(s):  
Research And Development ◽  
Plant Tissue ◽  
Research Method ◽  
Structure And Function ◽  
Teaching Materials ◽  
Is Research ◽  
E Learning ◽  
Teaching Biology ◽  
And Function

This study aims to determine whether Twitter-based e-learning media can be developed as a media for teaching biology on the structure and function of plant tissue. This research method is research and development. The research sample was teenage smartphone users in Walahar Village, Cirebon Regency. The results showed that e-learning based on twitter can be used and developed as a medium of teaching materials on the structure and function of plant networks

scholarly journals Monopoly Learning Media: Education Media in Structure and Function of Plant Tissue Theory

2020 ◽  
Vol 6 (1) ◽  
pp. 81-87
Author(s):  
Fitri Andriyani ◽  
Rahma Rosaliana Saraswati ◽  
Dina Melasari ◽  
Agustiani Putri ◽  
Dadan Sumardani
Keyword(s):  
Plant Tissue ◽  
Structure And Function ◽  
Material Structure ◽  
Student Interest ◽  
Design Development ◽  
Validation Test ◽  
The Media ◽  
Addie Model ◽  
And Function ◽  
Expert Validation

Material structure and function of plant tissue is one of the most difficult material for students to understand. This is because studying this material in detail requires aids (microscopes) whose observations are not necessarily easily understood by students. In addition, so far the learning media and methods used are less varied. Based on the above statement, we need a learning media that can increase student interest and student understanding in learning the structure and function of plant tissue. So this study aims to develop a monopolistic educational learning media on the structure and function of plant tissue in class VIII of SMPN. This development research refers to the ADDIE model (Analyze, Design, Development, Implement, Evaluation). The monopoly game structure and plant network developed consists of several game equipment including: a monopoly board, a set of ownership rights cards, a set of public and opportunity fund cards, a set of money - dice, and a game guide. As for the pawns in this game are the students themselves. Based on the material expert validation test, it was found that the percentage of material suitability in the monopoly of the structure and function of plant tissue was 70.83% or quite decent. Meanwhile, for the media expert validation test the percentage of eligibility was 63.33% or quite decent. Based on the validation test obtained an average of 67.08% or if interpreted then the monopoly of the plant's structure and tissue is quite feasible.

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