Conditions Required for Bacterial Growth Bacteria are microscopic prokaryotes (meaning their cells do not contain a nucleus or membrane-bound organelles) They are often used in studies to test anti...
Development of Drug Testing Whenever new drugs are developed, they first need to be tested for effectiveness and side-effects, before they can be sold to the general public These are known as clini...
Practical: Determinig the Tensile Strength of Plant Fibres The tensile strength of a fibre refers to the maximum load it can carry before breaking For example, this information would be important w...
Practical: Identifying Tissue Types Within Stems In order to identify tissue types within stems, a permanent pre-prepared slide could be used Alternatively, a section of a plant stem could be cut a...
Plant Fibres Sclerenchyma fibres and xylem vessels are made of long, hollow plant cells These cells are hollow due to the fact that their cell contents died (often due to the lignification of the c...
Starch & Cellulose: Structure & Function Starch Starch is the storage polysaccharide of plants It is stored as granules in plastids (e.g. chloroplasts) and amyloplasts (small, membrane boun...
Importance of Water & Inorganic Ions to Plants Plant cells perform a variety of different functions In order to perform these functions efficiently, the plant requires water and inorganic ions ...
Plant Stems Xylem vessels The functions of xylem tissue in a plant are: Vascular tissue that transports dissolved minerals and water around the plant Structural support Their cell walls contain lig...
昨天，国际高等教育研究机构QS又发布了新的大学排名。 2023QS亚洲地区大学排名 本次排名涵盖了760所亚洲大学，这也是迄今为止最大的一次亚洲大学排名。 排名亮点 ✔ 北京大学历史首次获得亚洲地区大学排名...
2022年第39届全国中学生物理学术活动决赛获奖名单公布啦！ 本次比赛共产生163枚金牌（含国集队50人），229枚银牌，151枚铜牌。 这些物理尖子生都分布在哪些地区和学校，快来一起看看吧~ 第39届物理学术活动决赛获...
Plant Cell Structure Plant cells contain most of the organelles found in animal cells, along with a few extra organelles that are only found in plant cells Cell wall Cell walls are formed outside o...
美本top50大部分学校早申截止日期都是在11月1日，不过，需要注意的是有少数几所学校的早申截止日期并不在11月1日，会有少数部分学校进行延期或是15号左右，那么，2023美国大学早申请放榜时间你知道吗？ 第一批次...
