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Examen
Biological Molecules and Enzyme Questions and Answers 2024
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---29abril 20242023/2024A+
- Q1.The diagram represents part of the human digestive system. The organs are labelled A−F. 
 
 
(a)	Give the letter of the organ that produces amylase. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(1) 
 
(b)	Give the letter of the organ that produces maltase. 
 
 
 
(1) 
(c)	Maltose is hydrolysed by the enzyme maltase. 
Explain why maltase catalyses only this reaction. 
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kimanifaith09
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Examen
Biology A level Edexcel: Topic 1 Exam with Solutions
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---3enero 20242023/2024A+
- Solvent - A liquid substance capable of dissolving other substances 
 
Dipolar - A molecule that has a partial - on one side and a partial + on the other 
 
Cohesive - Sticking together 
 
Aerobic respiration - Respiration that requires oxygen and glucose 
 
Multicellular organism - Organism made up of many cells 
 
Mass transport system - A system that carried substances from specialised exchange organs to cells 
 
Circulatory system - A system that carries oxygen and nutrients around th...
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kharowl
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Examen
Biology A-Level AQA Keywords - Unit 4
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---9junio 20222021/2022A
- Biology A-Level AQA Keywords - Unit 4 
 
Gene - Section of DNA on a chromosome that controls a feature by coding for formation of one or more specific polypeptides or a functional RNA (including rRNA and tRNA). 
 
Chromosome - A thread like structure made of protein and DNA by which hereditary information is physically passed from one generation to the next. 
 
Chromatin - The material that makes up chromosomes. It consists of DNA and the protein histone. 
 
Autosome - A chromosome which is not ...
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