Edexcel IGCSE Biology 复习笔记 2.8.6 Human Transport Systems: Red Blood Cells & Plasma Red Blood Cells Red blood cells are specialised cells which carry oxygen to respiring cells They ar...
关注科研的国内家长应该对“英才计划”并不陌生。入选“英才计划”，不仅能让学生近距离接触前沿的科学研究，还有机会晋级世界规模最大的科研赛事——ISEF国际科学与工程大奖赛！ 6月22日，“英才计划”正式宣布了2023年...
In Vivo Method: Culture of Transformed Host Cells Polymerase chain reaction (PCR) is a common molecular biology technique used in most applications of gene technology It is described as the ...
Polymerase Chain Reaction (PCR) Polymerase chain reaction (PCR) is a common molecular biology technique used in most applications of gene technology, for example, DNA profiling (eg. identifi...
Edexcel IGCSE Biology 复习笔记 2.8.5 Human Transport Systems: Blood Components of Blood Blood consists of red blood cells, white blood cells, platelets and plasma Over half of the volume of ...
Apparatus & Techniques: Investigating the Specificity of Restriction Enzymes The specificity of restriction enzymes can be investigated using extracted DNA and gel electrophoresis Gel el...
Edexcel IGCSE Biology 复习笔记 2.8.4 Practical: Factors Affecting Transpiration Practical: Factors Affecting Transpiration We can investigate the effect of different environmental conditions...
Producing Fragments of DNA Genetic engineering is the deliberate modification of a specific characteristic (or characteristics) of an organism. The technique involves removing a gene (or gen...
Edexcel IGCSE Biology 复习笔记 2.8.3 Water Movement in Flowering Plants Root Hair Cells Uptake of water into the root Root hair cells are adapted for the efficient uptake of water (by osmosi...
Sequencing Methods DNA sequencing allows for the base sequence of an organism's genetic material to be identified and recorded Sequencing methods are continuously evolving and becoming faste...
Edexcel IGCSE Biology 复习笔记 2.8.2 Transport Systems in Flowering Plants Xylem The roots, stem and leaves form a plant organ system for the transport of substances around the plant Plants ...
本周课题导视 机械工程方向课题 复杂系统可靠性模型研究 内燃机排气管疲劳寿命的改进 基于学习的高精密机器人控制算法 基于Abaqus的机械设计计算机辅助设计和有限元分析 应用于无人配送车的智能装卸载系统设计 汽...
