CIE IGCSE Biology: 復(fù)習(xí)筆記：9.1.8 Functioning of the Heart: Extended Functioning of the Heart: Extended Deoxygenated blood?coming from the body flows into the?right atrium?via the?vena cava Once t...
CIE IGCSE Biology: 復(fù)習(xí)筆記：9.1.7 Identifying Structures in the Heart: Extended Identifying Structures in the Heart: Extended The?ventricles?have thicker muscle walls than the atria as they are pu...
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...
2022年AMC10/12B卷考完了，中國賽區(qū)作為全球最后一個進行考試的主要賽區(qū)也正式拉下帷幕！同學(xué)們紛紛前來反饋，對題目難度的感嘆各有不同！ 大家關(guān)心的AMC10 B卷答案來了！同學(xué)們可以核對一下答案，預(yù)測一下自己的...
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...
2022年AMC10/12B卷考完了，中國賽區(qū)作為全球最后一個進行考試的主要賽區(qū)也正式拉下帷幕，大家都感覺考得怎么樣呢，今年的AMC10/12A卷、B卷的難度如何？ 大家關(guān)心的AMC12 B卷真題+答案來了！同學(xué)們可以核對一下答...
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...
