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Biology AS Level, OCR
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Updated Biology As Level, Ocr Exam Studypack With Verified Solutions 2023/2024
PopularWhat is cell theory? - ANSWER It states that the cell is the fundamental structure of all 
living matter, and that cells can only develop from other existing cells. 
Why was cell theory not fully developed before the mid-19th century? - ANSWER 
Before then, microscope magnification was not as powerful, and so scientists were 
unable to see and identify single cells or cell components. 
Describe the process of calibrating a microscope. - ANSWER 1. Place the stage 
micrometer on the stage and alig...