IB DP Biology: SL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: SL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: SL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 ...
IB DP Biology: SL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: SL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: SL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: SL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...
IB DP Biology: SL复习笔记6.3.1 Skin
Skin The skin and mucous membranes form a primary defence against pathogens that cause infectious disease Skin is the largest organ of the body and is covered in microorganisms that usually cause n...
IB DP Biology: SL复习笔记6.2.6 Skills: The Blood System
The Structure of the Heart Heart structure The heart has two sides: The left side pumps oxygenated blood around the body in the systemic circulation The right side pumps deoxygenated blood to the l...
