Digital Lesson Hub:
Biology A Level

During this lesson you will learn how to:

• Recap the stages of transcription and translation​
• Explain the role of transcription factors in controlling gene transcription​
• Describe the role of the steroid hormone, oestrogen, in initiating transcription

During this lesson you will learn how to:

• Define the term ‘stem cells’ and state the different types​
• Describe how stem cells lose their totipotency and become specialised​
• Explain how pluripotent stem cells can be used to treat human disorders​

During this lesson you will learn how to:

• State what is meant by epigenetics​
• Describe the impact of methylation of DNA and acetylation of histone proteins​
• Explain the effect of epigenetic factors have on DNA and histone proteins to explain how these effect gene expression​

During this lesson you will learn how to:

• Distinguish between benign and malignant tumours​
• Explain the role of oncogenes and tumour suppressor genes in the development of tumours​
• Explain how increased oestrogen levels can cause breast cancer​

During this lesson you will learn how to:

• Define the key term ‘genome’ ​
• Describe simple methods of sequencing the genome of organisms.​
• Explain the purpose of genome sequencing projects​
• Identify scientific developments that have arisen due to the use of genome sequencing projects.