• Title/Summary/Keyword: Interest of Biology

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Databases and tools for constructing signal transduction networks in cancer

  • Nam, Seungyoon
    • BMB Reports
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    • 제50권1호
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    • pp.12-19
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    • 2017
  • Traditionally, biologists have devoted their careers to studying individual biological entities of their own interest, partly due to lack of available data regarding that entity. Large, high-throughput data, too complex for conventional processing methods (i.e., "big data"), has accumulated in cancer biology, which is freely available in public data repositories. Such challenges urge biologists to inspect their biological entities of interest using novel approaches, firstly including repository data retrieval. Essentially, these revolutionary changes demand new interpretations of huge datasets at a systems-level, by so called "systems biology". One of the representative applications of systems biology is to generate a biological network from high-throughput big data, providing a global map of molecular events associated with specific phenotype changes. In this review, we introduce the repositories of cancer big data and cutting-edge systems biology tools for network generation, and improved identification of therapeutic targets.

초등 예비 교사들의 생물 주제 및 활동에 대한 흥미 조사 연구 (Study on Elementary Pre-Service Teachers' Interest in Biological Topics and Activities)

  • 심규철;김정민;여성희
    • 한국초등과학교육학회지:초등과학교육
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    • 제26권4호
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    • pp.468-474
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    • 2007
  • The purpose of this study was to examine the elementary pre-service teachers' interest in biological topics and activities. The instrument to survey the interest of them consists of 8 domains containing 27 topic items and 7 domains containing 12 activity items(three-point from 0 to 2 Likert scale). Data were collected from 108 pre-service teachers. The interest level in the topics was high, but the interest level in the activities was average. There was not different between interest levels of females and males in both topic and activity components (p > .05). Among the topics, the 'genetics' domain correlated strongly with the domains of 'nutrition and digestion', 'circulation', 'respiration' and 'nervous system', and the 'respiration' domain correlated with the 'circulation' domain(r >.450, p<.01). The correlation between the domains of 'out-of class experience activity' and 'visual information activity', and 'experimental performance following procedure' and 'discussing and debating'(r >.450, p<.01). This results suggested that the educational contents including learning materials and experiential activities be developed to activate the interest of elementary pre-service teachers in biology.

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창의적 과학글쓰기를 활용한 수업이 생물에 대한 흥미와 과학적 태도에 미치는 효과 (The Effect of Class based on Creative Science Writing for the Interest in Biology and the Scientific Attitude)

  • 김형자;변정호;권용주
    • 과학교육연구지
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    • 제36권2호
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    • pp.198-215
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    • 2012
  • 이 연구는 창의적 과학글쓰기를 활용한 수업이 고등학생들의 생물에 대한 흥미와 과학적 태도에 어떠한 영향을 미치는지 확인하는 것에 목적을 두고 있다. 창의적 과학글쓰기는 학습 내용을 바탕으로 일상생활 속에서 과학의 원리를 찾아 자신의 생각이나 느낌을 자유롭게 표현하는 글쓰기이다. 생물교과 내용 중 순환과 호흡단원을 선정하여 창의적 과학글쓰기를 활용한 수업 지도안을 개발하였고, 전라남도 순천시 소재 인문계 고등학교 2학년 자연계열 학생 148명을 대상으로 사전-사후 검사 비교집단 설계방법을 사용하였다. 148명의 학생들을 비교집단과 실험집단으로 분류하여 총 7차시로 개발한 창의적 과학글쓰기 수업 지도안을 6주 동안 적용하였다. 학생들의 생물에 대한 흥미의 향상 정도를 알아보기 위해 생물에 대한 흥미 검사지를 사용하였으며, 과학적 태도 변화를 알아보기 위해 과학적 태도 검사지를 사용하여 측정 및 분석하였다. 이 연구의 결과에 따르면, 창의적 과학글쓰기를 활용한 수업은 고등학생들의 생물에 대한 흥미를 향상시키는데 효과적이었으며, 특히 생물에 대한 관심과 생물 학습에 대한 흥미, 생물과 관련된 활동에 대한 흥미 향상에 효과적이었다. 이는 창의적 과학글쓰기를 활용한 수업이 학생들에게 기존 수업과는 달리 새로운 수업방법으로 다가가 학습한 내용을 단순히 암기하는데 그치지 않고 자신의 일상생활에 적용하여 자유롭게 글로 표현함으로써 흥미를 유발시킬 수 있었고, 여러 가지 유형의 글쓰기를 통해 학습내용을 실생활에 다양하게 적용해 봄으로써 일상생활 속에서 생물학 원리를 스스로 찾을 수 있게 해주어 생물에 대한 흥미를 향상시켰음을 알 수 있었다. 뿐만 아니라, 창의적 과학글쓰기를 활용한 수업은 고등학생들의 과학적 태도의 변화에 긍정적인 영향을 주었다. 창의적 과학글쓰기가 학습 내용을 바탕으로 폭넓은 사고를 통해 자신의 생각을 써나가는 글쓰기이므로 글을 쓰는 동안 자신의 사고 과정을 정리하면서 과학적 태도가 긍정적으로 변화되는데 효과적임을 알 수 있었다. 이상의 결과를 토대로 할 때 창의적 과학글쓰기를 활용한 수업이 고등학생들의 생물에 대한 흥미를 향상시키고, 과학적 태도를 긍정적으로 변화시키는데 효과적인 수업방법으로 활용될 수 있다는 결론을 얻었다. 따라서 고등학생들에게 적합한 창의적 과학글쓰기 유형을 주제별로 개발하여 다양하게 활용할 수 있는 방안에 대한 후속 연구가 필요할 것이다.

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Effects of Microgravity and Hypergravity on Aging end Longevity of Insects

  • Kim, Hak-Ryul
    • Animal cells and systems
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    • 제4권3호
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    • pp.231-237
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    • 2000
  • The effects of microgravity and hypergravity on aging are still poorly documented, particularly in mammals. However, there is a growing interest for the use of the fruit fly, Drosophila melanogaster, and this species may be now considered as a model organism in gravitational biology studies dealing with aging.

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Functional Genomic Approaches Using the Nematode Caenorhabditis elegans as a Model System

  • Lee, Jun-Ho;Nam, Seung-Hee;Hwang, Soon-Baek;Hong, Min-Gi;Kwon, Jae-Young;Joeng, Kyu-Sang;Im, Seol-Hee;Shim, Ji-Won;Park, Moon-Cheol
    • BMB Reports
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    • 제37권1호
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    • pp.107-113
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    • 2004
  • Since the completion of the genome project of the nematode C. elegans in 1998, functional genomic approaches have been applied to elucidate the gene and protein networks in this model organism. The recent completion of the whole genome of C. briggsae, a close sister species of C. elegans, now makes it possible to employ the comparative genomic approaches for identifying regulatory mechanisms that are conserved in these species and to make more precise annotation of the predicted genes. RNA interference (RNAi) screenings in C. elegans have been performed to screen the whole genome for the genes whose mutations give rise to specific phenotypes of interest. RNAi screens can also be used to identify genes that act genetically together with a gene of interest. Microarray experiments have been very useful in identifying genes that exhibit co-regulated expression profiles in given genetic or environmental conditions. Proteomic approaches also can be applied to the nematode, just as in other species whose genomes are known. With all these functional genomic tools, genetics will still remain an important tool for gene function studies in the post genome era. New breakthroughs in C. elegans biology, such as establishing a feasible gene knockout method, immortalized cell lines, or identifying viruses that can be used as vectors for introducing exogenous gene constructs into the worms, will augment the usage of this small organism for genome-wide biology.

한국과 미국 대학생들의 종교성, 진화 흥미, 진화 개념, 진화 수용의 수준과 구조 비교 (A Comparative Study of Korean and United States College Students' Degree of Religiosity, Evolutionary Interest, Understanding and Acceptance and Their Structures)

  • 하민수;차희영;구슬애
    • 한국과학교육학회지
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    • 제32권10호
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    • pp.1537-1550
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    • 2012
  • 이 연구 목적은 한국과 미국 대학생들을 대상으로 진화 개념과 관련된 변인-종교성, 진화 흥미, 진화 개념, 진화 수용-에 관한 수준과 구조적 차이를 비교 분석하는 것이다. 이 연구를 위하여 한국과 미국 대학생 1,015 학생이 참여하였으며 그 중 무작위로 추출된 516명의 자료가 분석에 활용되었다. 연구 결과 한국의 대학생들은 미국의 대학생들에 비하여 낮은 종교성을 보이는 반면 진화 흥미 역시 낮았다. 경로 분석결과 종교성이 진화 수용에 미치는 인과관계에서 진화 개념과 진화 흥미가 매개함을 알 수 있었다. 한국 대학생들은 미국 대학생들에 비하여 진화 흥미가 종교성, 진화 수용, 진화 개념과 상대적으로 낮은 수준의 관련성을 보였다. 한국의 생물 전공자들의 진화 수용은 미국 생물 전공자들의 비하여 진화 개념에 대한 영향력이 적었고, 한국 생물 비전공자들의 진화 수용은 미국 생물 비전공자들에 비하여 종교성에 더 큰 영향을 받았다. 이 연구 결과는 한국 학생들을 위한 진화 교육이 진화론에 대한 흥미를 더 높이며, 진화론을 수용함에 있어 개인의 종교적 신념에 근거하지 않고 과학적 이론으로 수용할 수 있어야 함을 보여준다. 또한 우리나라 대학생들이 과학적 판단에 의하여 과학 이론을 수용하는 태도를 함양시킬 수 있는 과학교육이 필요하다.

뇌기반 진화적 접근법에 따른 과학 야외학습이 초등학생들의 흥미와 성취도에 미치는 영향 (Analyses of Elementary School Students' Interests and Achievements in Science Outdoor Learning by a Brain-Based Evolutionary Approach)

  • 박형민;김재영;임채성
    • 한국초등과학교육학회지:초등과학교육
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    • 제34권2호
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    • pp.252-263
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    • 2015
  • This study analyzed the effects of science outdoor activity applying a Brain-Based Evolutionary (ABC-DEF) approach on elementary school students' interest and academic achievement. Samples of the study were composed of 3 classes of 67 sixth graders in Seoul, Korea. Unit of 'Ecosystem and Environment' was selected as a object of the research. Textbook- and teachers' guidebook-based instruction was implemented in comparison group, brain-based evolutionary approach within classroom in experimental group A, and science outdoor learning by a brain-based evolutionary approach in experimental group B. In order to analyze the quantitative differences of students' interests and achievements, three tests of 'General Science Attitudes', 'Applied Unit-Related Interests', and 'Applied Unit-Related Achievement' were administered to the students. To find out the characteristics which would not be apparently revealed by quantitative tests, qualitative data such as portfolios, daily records of classroom work, and interview were also analyzed. The major results of the study are as follows. First, for post-test of interest, a statistically significant difference between comparison group and experimental group B was found. Especially, the 'interests about biology learning' factor, when analyzed by each item, was significant in two questions. Results of interviews the students showed that whether the presence or absence of outdoor learning experience influenced most on their interests about the topic. Second, for post-test of achievement, the difference among 3 groups according to high, middle, and low levels of post-interest was not statistically significant, but the groups of higher scores in post-interest tends to have higher scores in post-achievement. It can be inferred that outdoor learning by a brain-based evolutionary approach increases students' situational interests about leaning topic. On the basis of the results, the implications for the research in science education and the teaching and learning in school are discussed.

Sensitivity Enhancement of Methyl-TROSY by Longitudinal 1H Relaxation Optimization

  • Lee, Dong-Han;Vijayan, Vinesh;Montaville, Pierre;Becker, Stefan;Griesinger, Christian
    • 한국자기공명학회논문지
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    • 제13권1호
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    • pp.15-26
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    • 2009
  • The NMR detection of methyl groups is of keen interest because they provide the long-range distance information required to establish global folds of high molecular weight proteins. Using longitudinal $^1H$ relaxation optimization, we achieve a gain in sensitivity of approximately 1.6-fold in the methyl-TROSY and its NOESY experiments for the 38 kDa protein mitogen activated protein kinase p38 in its fully protonated and $^{13}C$ and $^{15}N$ labeled state.

Fructan Biosynthesis by Yeast Cell Factories

  • Hyunjun Ko;Bong Hyun Sung;Mi-Jin Kim;Jung-Hoon Sohn;Jung-Hoon Bae
    • Journal of Microbiology and Biotechnology
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    • 제32권11호
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    • pp.1373-1381
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    • 2022
  • Fructan is a polysaccharide composed of fructose and can be classified into several types, such as inulin, levan, and fructo-oligosaccharides, based on their linkage patterns and degree of polymerization. Owing to its structural and functional diversity, fructan has been used in various fields including prebiotics, foods and beverages, cosmetics, and pharmaceutical applications. With increasing interest in fructans, efficient and straightforward production methods have been explored. Since the 1990s, yeast cells have been employed as producers of recombinant enzymes for enzymatic conversion of fructans including fructosyltransferases derived from various microbes and plants. More recently, yeast cell factories are highlighted as efficient workhorses for fructan production by direct fermentation. In this review, recent advances and strategies for fructan biosynthesis by yeast cell factories are discussed.