生物作文300个字【一】
1、植物细胞的生长中细胞体积和重量不可逆的增加。
2、原生质生长和细胞壁生长。
生物作文300个字【二】
各位尊敬的评委老师：
大家早上/下午好!
我叫**，是**大学环境科学专业的应届毕业生。
今天能在这里参加教师资格试讲面试，有机会向各位评委老师请教学习，我感到十分的荣幸，我从小就对老师万分的钦佩，梦想长大后能够成为一名合格的人名教师，但我深知要成为一名合格的人民教师不仅要有丰富的知识，还要有出众的能力，为了完成自己的理想，我严格要求自己，并努力学习，以期待着将来可以走上这三尺讲台。
可遗憾的是在2012年的'高考中，我并没有顺利的考上师范大学，那时的我很失落很迷茫，一心渴望当老师的梦想就这样破灭了，进入大学后在大学的学习生活中我了解到可以报考教师资格证，得知这一消息让我兴奋不已，内心想成为一名教师的梦想再次被点亮，我又找回了奋斗目标，并为之努力拼搏!
试讲的科目各有特色，我却独爱生物，因为生物学(Biology是一门研究生命系统各个层次的种类、结构、功能、行为、发育和起源进化以及生物与周围环境的关系等的科学。它是农学、林学、医学和环境科学的基础。它是21世纪的主导科目。社会的发展，人类文明的进步，个人生活质量的提高，都要靠生物学的发展和应用。对人类来说，生物太重要了，人们的生活处处离不开生物。
所以我想成为一名生物老师，与学生一同学习，为学生解惑答疑。今天站在这里，恳请给位考官能够给我一次成为教师的机会，或许我不是最优秀的，但是我知道经过磨练，我一定是最有潜力的，如果我能有幸成为一名人民教师，我将全力以赴，以自己的爱心，热心和敬业之心去实现我儿时的梦想，我将用我的激情，热情和感恩之情去延续今生的奋斗目标!
我的介绍完毕。谢谢!
生物作文300个字【三】
学习生物的感触自打初一开始，我们便有了生物这门课程，直到初二的学习，我对他有了很深的情感，我也产生了许多的感触。
生物学系非常奇妙的学科，他介绍了万物的发展和规律，尤其我喜欢“自然界的动物”这一节，他为我们介绍了自然界各种各样的动物，让我感受到了动物的丰富性与多样性，富有趣味！比如生物书中我最喜欢的一个问题：为什么大鯢叫做娃娃鱼呢？原因很简单，因为他在叫的时候声音很像娃娃在哭泣时发出来的，所以把它叫做娃娃鱼，这是多么有趣的自然现象啊！
在上学期的课本中，我们学习了人的人体，这一节让我感受到了人体内部的精密，这是机器人，是现代机器人无法比拟的，同时，这也是现代机器人将要进步的方向和发展的前景。有一个问题是这样问的：为什么手上有这么多的褶皱呢？原因是因为在远古时期，人类需要打磨器具，所以弄了这些褶皱，才使我们有了摩擦力，更好的来生产和工作。更令我惊奇的是，如果把一个人的小肠平铺开来，它的表面积，也将会有一个足球场那么大！
生物是自然界中的最有趣的一门学科，它教我懂得自然现象的神奇，以及我们生活生态圈的生物的多样性。
生物作文300个字【四】
Dear Sir or Madam:
In my capacity as the chairman of Biochemistry and Molecular Biology Department, the School of Life Science, Nankai University, I deem it a pleasure to recommend Mr. Bruce Liu as a worthy candidate for graduate studies at the Department of Cell and Molecular Biology of your esteemed university.
Over the past four years, I delivered two important courses Genetics and Cell Engineering to the Mr. Liu‘s class and his performance was impressive. He is endowed with a strong curiosity in the quest for new knowledge. Before attending each class, he would make full preparations so that he could quickly assimilate what was being taught. Sometimes he could come up with some surprisingly thought-provocative questions and he had a habit of discussing important problems with me in great detail. During those discussions, he often brought with him valuable materials that he obtained from a large quantity of technical literature. Such an initiative enabled him to broaden his ken of knowledge extensively and to cultivate and significantly improve his ability in reading technical literature in English and to follow the latest scientific and technological development in the world. Therefore, even before he graduated, he had already distinguished himself from the rest of his classmates in his English proficiency. Furthermore, his indefatigable spirit of reading large amount of technical materials was not simply intended to secure high scores in his coursework, but more importantly, to satisfy his almost insatiable interest in biology.
Apart from this, I was also very impressed by Mr. Liu‘s hands-on ability in conducting experiments. For many complicated experiments, he undertook them with a rigorous and conscientious attitude and would always complete them satisfactorily. In dealing with crucial steps involved in the experiments, he tended to make bold hypotheses and conduct substantial observations, ultimately achieving remarkable results. All those testify to Mr. Liu‘s tremendous potential in academic research, especially in his analytical skills and in the execution of experimental procedures.
In addition to his scholastic aptitudes, Mr. Liu can be described as trustworthy in personality. His kind-hearted nature and his integrity have created many friends for him. By no means a bookworm, Mr. Liu took an active part in extracurricular activities in which he enhanced his group spirit and the sense of collectivism. His willingness to assist his classmates has brought him a very high reputation.
To summarize, Mr. Liu has been an outstanding student in our department and he is fully qualified to undertake high-level studies in a more challenging environment. His excellent qualities will undoubtedly facilitate him in achieving satisfactory results in his future academic pursuit and in his career.
Yours Sincerely
Professor and Chairman of Biochemistry and Molecular Biology Department
Nankai University
