Study guides, Class notes & Summaries

1 gene makes - 1 protein 2 copies of this type of allele are rquired - recessive A community where all species and environmental factors are in balance - A stable community A different version of a gene - Allele A gradual change in a species of time - Evolution A group of organisms that is similar enough to be able to breed together to produce fertile offspring - Species A mix of living organisms and the environment e.g. a woodland - ecosystem A molecule of DNA coiled and mixed with p...

A decrease in the activity of the enzyme rubisco would limit the rate of photosynthesis. Explain why. - 1. Less carbon dioxide reacts with RuBP; 2. Less GP; Describe how alterations to tumour suppressor genes can lead to the development of tumours. - 1. Increased methylation of tumour suppressor genes 2.Mutation occurs 3. Tumour suppressor genes are not transcribed/expressed Effect of limiting Light on the calvin cycle? - RuBP decreases - being converted into GP but not being reformed ...

Description of nucleus - Large organelle surrounded by a nuclear envelope which contains pores. the nucleus contains chromatin (which is made from DNA and proteins and a structure called the nucleolus. What is the function of nucleus ? - Controls the cells activities by controlling the transcription of DNA. DNA contains instructions to make proteins. Pores allow substances to move between the nucleus and cytoplasm. The nucleolus makes ribosomes Description of lysosome - A round organ...

Description of nucleus - Large organelle surrounded by a nuclear envelope which contains pores. the nucleus contains chromatin (which is made from DNA and proteins and a structure called the nucleolus. What is the function of nucleus ? - Controls the cells activities by controlling the transcription of DNA. DNA contains instructions to make proteins. Pores allow substances to move between the nucleus and cytoplasm. The nucleolus makes ribosomes Description of lysosome - A round organ...

AQA GCSE CHEMISTRY Higher Tier Paper 2 2020

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