Some concepts turn up again and again in A-level biology. Taking a little time to ensure you really understand these key concepts from the start can save a lot of effort overall.
Surface area to volume ratio (SA:V) is vital for understanding a wide range of topics including transport across cell membranes, gas exchange, digestion, heat exchange, and mass transport. SA:V explains why the inner membrane of a mitochondrion is folded, why elephants have big ears, and why jellyfish don’t need blood vessels.
Read moreThis article is for anyone who is totally confused by mitosis, or who hasn’t yet started the topic.
Mitosis is part of cell division. It explains how multicellular organisms grow and is vital for understanding the challenging topic of autosomal linkage. Mitosis is also similar to the first half of meiosis; learning mitosis first will make meiosis much easier to understand.
Remember that for A level biology, you always need to understand why, as well as how. So, get a strong grip of the fundamental concept of mitosis before you try to memorise the details. Understanding the purpose of mitosis will also make it a lot easier to remember the individual stages of the process.
Read moreCan you spot the problems with these A level Biology exam question answers? These bloopers come up a lot - check you’re not going to make the same mistakes.
Read moreOCR A Cells Organelles and Microscopes Quiz
Read moreOCR A Meiosis and Cell Differentiation Quiz
Read moreQuestions by topic - OCR A Cell Cycle and Mitosis Multiple Choice Quiz
Read morePractising recall and doing questions is so important for long term retention of information. Try this self marked quiz. OCR A Cell Membranes
Read moreCell cycle, mitosis and cell division. Pack of exam questions on mitosis and meiosis
Read moreMultiple choice questions on cell organelles, all past paper questions, a good way to assess your understanding
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