IB DP Biology: HL复习笔记6.5.2 Nerve Impulses
Resting Potential Neurones transmit information in the form of impulses, which travel extremely quickly along the neurone from one end to the other Note that an impulse is not an electrical current...
IB DP Biology: HL复习笔记6.5.1 Neurones: Function & Structure
Function & Structure of Neurones The nervous system The human nervous system consists of: Central nervous system (CNS) – the brain and spinal cord Peripheral nervous system (PNS) – all of the n...
IB DP Biology: HL复习笔记6.4.4 Skills: Monitoring Ventilation
Practical 6: Monitoring Ventilation The volume of air within the lungs of an individual will change depending on their level of activity When at rest, breathing is shallow and slow When exercising,...
IB DP Biology: HL复习笔记6.4.3 Lung Diseases
Cancer NOS: Obtain evidence for theories: epidemiological studies have contributed to our understanding of the causes of lung cancer Theories are developed based on evidence collected through obser...
IB DP Biology: HL复习笔记6.4.2 Ventilation: Mechanism
Inspiration & Expiration Breathing in The breathing-in, or inspiration, process causes the volume of the chest to increase and the air pressure to decrease until it is lower than the atmospheri...
IB DP Biology: HL复习笔记6.4.1 Ventilation: Function & Structures
Ventilation Ventilation can be defined as The replacement of older air in the lungs with fresh air from the body's external environment Ventilation is essential for the effective exchange of gases ...
美国留学毕业后城市推荐，附院校推荐
1- Orlando 奥兰多，佛罗里达 - 平均年薪：52,300美元 失业率：5.0% 院校推荐：佛罗里达大学 佛罗里达的旅游城市最不缺乏的就是娱乐活动。奥兰多拥有比美国其他城市更多的景点和餐厅，每 10 万人拥有 900 多家餐...
IB DP Biology: HL复习笔记6.3.5 Antibiotic Resistance
Antibiotic Resistance Within a bacterial population, there is variation caused by mutations (as occurs in populations of all species) A chance mutation might cause some bacteria to become resistant...
IB DP Biology: HL复习笔记6.3.4 Antibiotics
Antibiotics Antibiotics are drugs that inhibit the growth of microorganisms Most antibiotics kill or stop the growth of bacteria (prokaryotes) but do not harm the cells of the infected organism Thi...
IB DP Biology: HL复习笔记6.3.3 White Blood Cells
White Blood Cells Phagocytes are white blood cells that are produced continuously in the bone marrow They are responsible for removing dead cells and invasive microorganisms; a non-specific immune ...
IB DP Biology: HL复习笔记6.3.2 Blood Clotting
Platelets When the skin is cut, microorganisms have an entry point to get into the body The first line of defence is compromised In order to minimise the risk of substantial blood loss and entry of...
北大附属实验学校官宣正式更名为北京市丰台区新北赋学校！
按照教育部和北京市教委有关部门的要求，“北大附属实验学校”于2022年6月28日起正式更名为“北京市丰台区新北赋学校”。️ 为此，针对家长们最关心的问题：校名变了，对学校会有什么影响？新北赋学校表示：除...
