CIE IGCSE Biology: 復(fù)習(xí)筆記：9.1.6 Coronary Heart Disease Coronary Heart Disease The coronary arteries The heart is made of?muscle cells?that need their own supply of blood to deliver oxygen, gluco...
CIE IGCSE Biology: 復(fù)習(xí)筆記：9.1.5 Investigating Effect of Physical Activity on Heart Rate Investigating Effect of Physical Activity on Heart Rate It is relatively simple to investigate the effects...
CIE IGCSE Biology: 復(fù)習(xí)筆記：9.1.4 Monitoring Activity of the Heart Monitoring Activity of the Heart Heart activity can be monitored by using an?ECG, measuring?pulse rate?or?listening to the sounds...
CIE IGCSE Biology: 復(fù)習(xí)筆記：9.1.2 Circulatory System: Extended Circulatory Systems of Fish & Mammals: Extended Circulatory systems in Fish Fish have a?two-chambered heart?and a?single c...
CIE IGCSE Biology: 復(fù)習(xí)筆記：9.1.1 Circulatory System Circulatory System The circulatory system is a system of?blood vessels with a pump and valves?to ensure?one-way flow?of blood An example of a c...
CIE IGCSE Biology: 復(fù)習(xí)筆記：8.1.8 Translocation Translocation The soluble products of photosynthesis are?sugars (mainly sucrose) and amino acids These are transported around the plant in the?phloe...
CIE IGCSE Biology: 復(fù)習(xí)筆記：8.1.7 Explaining the Effects of Temperature, Wind Speed & Humidity: Extended Explaining the Effects of Temperature, Wind Speed & Humidity: Extended Wind speed, ...
CIE IGCSE Biology: 復(fù)習(xí)筆記：8.1.6 Transpiration Stream: Extended Water Vapour Loss: Extended Evaporation?takes place from the surfaces of spongy mesophyll cells The?many interconnecting air spaces...
CIE IGCSE Biology: 復(fù)習(xí)筆記：8.1.5 Investigating Temperature & Wind Speed Investigating the Effect of Temperature & Wind Speed on Transpiration Rate Investigating the role of environmental ...
