Blood - GCSE Biology The heart & blood vessels - GCSE Biology The human digestive system - GCSE Biology Principles of organisation - GCSE Biology This bundle contains a comprehensive overview of all topics under the “Organisation” section of the AQA GCSE Biology specification. It includes a deta...
悲剧类(Tragedy) 适合分析人物命运、道德冲突、结构设计和情感张力。 Shakespeare Macbeth(AQA, Edexcel, OCR, Eduqas 常见) Romeo and Juliet Arthur Miller Death of a Salesman(OCR有时选入) Willy Russell Blood Brothers(社会悲剧) John Steinbeck Of Mice and Men(悲剧结尾,反映社会现实) 社会批评与道德(Socia...
If the heart has a better stroke volume, the heart will need to beat less often at rest (heart rate) to produce the same cardiac output (volume of blood pumped out). We call this bradycardia, where resting heart rate is lower because of long-term exercise. ...
Past Exam Questions Explain why we are told not to exercise immediately after eating a large meal. (3) Answer To digest food the digestive system needs a greater blood supply. During exercise the working muscles needs a greater blood supply. Blood is therefore shunted away from the digestive ...