IB DP Biology: HL復習筆記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復習筆記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復習筆記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復習筆記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復習筆記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復習筆記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?...
美國留學畢業后城市推薦，附院校推薦
1- Orlando 奧蘭多，佛羅里達 - 平均年薪：52,300美元 失業率：5.0% 院校推薦：佛羅里達大學 佛羅里達的旅游城市最不缺乏的就是娛樂活動。奧蘭多擁有比美國其他城市更多的景點和餐廳，每 10 萬人擁有 900 多家餐...
IB DP Biology: HL復習筆記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復習筆記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復習筆記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復習筆記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...
北大附屬實驗學校官宣正式更名為北京市豐臺區新北賦學校！
按照教育部和北京市教委有關部門的要求，“北大附屬實驗學校”于2022年6月28日起正式更名為“北京市豐臺區新北賦學校”。️ 為此，針對家長們最關心的問題：校名變了，對學校會有什么影響？新北賦學校表示：除...
