CS专业力压藤校,实力被严重低估的公立常春藤——UIUC伊利诺伊大学香槟分校
社会捐赠作为美国大学重要的资金来源之一,是学校提供高质量教学、研究和服务的基本保证! 近日,UIUC官宣他们已提前达成了“计划在5年时间内实现22.5亿美元慈善筹款”计划,仅仅用了四年,伊大就累计筹得款项27亿...
社会捐赠作为美国大学重要的资金来源之一,是学校提供高质量教学、研究和服务的基本保证! 近日,UIUC官宣他们已提前达成了“计划在5年时间内实现22.5亿美元慈善筹款”计划,仅仅用了四年,伊大就累计筹得款项27亿...
Osmosis All cells are surrounded by a cell surface membrane which is partially permeable Water can move in and out of cells across the cell surface membrane by a process called osmosis Osmosis is t...
Active Transport Active transport is the movement of molecules and ions through a cell membrane from a region of lower concentration to a region of higher concentration Active transport requires en...
Diffusion & Facilitated Diffusion Diffusion is a type of transport that can occur across a cell membrane Note that diffusion can also happen within a cellular compartment; the presence of a mem...
Practical: Investigating Membrane Structure & Permeability The permeability of cell membranes is affected by several factors such as Temperature pH The effect of such factors on membrane struct...
Cell Membranes Membranes are vital structures found in all cells The cell surface membrane creates an enclosed space separating the internal cell environment from the external environment, and intr...
The Mammalian Lung: Structure & Function The lungs of air-breathing animals provide an ideal exchange surface for the diffusion of gases The lungs are located in the thorax, or chest cavity Som...
Fick's Law of Diffusion Fick's Law relates the rate of diffusion to the concentration gradient, the diffusion distance and the surface area This relationship can be represented by the following equ...
Properties of Gas Exchange Surfaces All organisms need to exchange gases with their environment, e.g. Aerobic respiration requires oxygen and produces carbon dioxide as a waste product Photosynthes...
1.2.11 Practical: Vitamin C Content Vitamin C is found in green vegetables, fruits, and potatoes It is essential for a healthy diet The chemical name for vitamin C is ascorbic acid Ascorbic acid is...
Lipids & CVD A risk factor is any factor that increases the chance of developing a particular condition or disease An increase in a risk factor does not guarantee the development of disease, bu...
知道AMC,大多都是对数学感兴趣,想要报名考试的学生。有的学生不知道去哪里找真题,也不知道怎么报名,那么今天小编就带着大家了解一下今年的AMC12,由于考试时间临近,所以本文重点讲讲今年的考试形式,不能忽...
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