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AQA GCSE CHEMISTRY Higher Tier Paper 2 2020

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39 pages

Written in 2021/2022

Grade A+

coursemerit

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...

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59 pages

Written in 2022/2023

Grade A

Lectharvard

AQA JUNE 2026 Chemistry AS LEVEL 7404 PAPER 2 Exam Guide - Complete Solutions Updated Iodide ions are oxidised to iodine by hydrogen peroxide in acidic conditions. H2O2(aq) + 2H+(aq) + 2I-(aq) → I2(aq) + 2H2O(l) The rate equation for this reaction can be written as rate = k [H2O2]a [I-]b [H+]c In an experiment to determine the order with respect to H+(aq), a reaction mixture is made containing H+(aq) with a concentration of 0.500 mol dm-3 A large excess of both H2O2 and I- is use...

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10 pages

Written in 2026/2027

Grade A+

SARAHnkalu

paper 2 2021 question with answers

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4 pages

Written in 2024/2025

Grade A+

eduustudent

AQA A LEVEL CHEMISTRY ORGANIC AND PHYSICAL CHEMISTRY PAPER 2 QP 2020 AQA A Level Chemistry 2020QA Chemistry Pa Aper 2 2020 A Level Chemistry Organic and Physical 2020 AQA Chemistry questions Chemistry A Level revision 2020 AQA Chemistry past papers 2020 Organic Chemistry AQA A Level Physical Chemistry AQA A Level AQA Chemistry exam paper 2020 AQA A Level Chemistry study material AQA Chemistry A Level syllabus 2020 Chemistry AQA structured questions AQA Chemistry Paper 2 topics Chem...

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59 pages

Written in 2024/2025

Grade A+

NURSEBRUCE

Aqa A Level Chemistry Organic And Physical Chemistry Marking Scheme Paper 2 2020

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33 pages

Written in 2024/2025

Grade A+

17dollars

Aqa A Level Chemistry Organic And Physical Chemistry Paper 2 Qp 2025

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33 pages

Written in 2024/2025

Grade A+

17dollars

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...

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8 pages

Written in 2022/2023

Grade A

Lectharvard

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 ...

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4 pages

Written in 2022/2023

Grade A

Lectharvard

OCR A Level Biology: Populations and Sustainability,,OCR A Level ChemistryHaloalkanes,,OCR Biology A Paper 2,

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4 items

Lectharvard

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...

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59 pages

Written in 2022/2023

Grade A

Lectharvard

Aqa A Level Chemistry Organic And Physical Chemistry Paper 2 Qp 2020

5.0

(3)

29 pages

Written in 2020/2021

Grade A

Nipsey

Aqa A Level Chemistry Organic And Physical Chemistry Marking Scheme Paper 2 2020

3.8

(4)

30 pages

Written in 2020/2021

Grade A

Nipsey