AQA GCSE Biology B1 questions and solutions

AQA GCSE Biology B1 questions and solutions

What are cells? - answersThe building blocks of organisms
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Define eukaryotic cell - answersCells that have a true nucleus
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Define prokaryotic cell - answersCells that do not have a true nucleus
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What is in an animal cell? - answersNucleus, cytoplasm, cell membrane, mitochondria, ribosomes
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What is in a plant cell? - answersSame as animal plus: vacuole, chloroplasts, chlorophyll, cell wall
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What is in a yeast cell? - answersSame as animal plus: temporary vacuole, cell wall
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What is in a bacterial cell? - answersCytoplasm, cell membrane, cell wall, ribosomes, chromosomes, plasmid, capsule,
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flagellum
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Function of nucleus - answersThe control centre of the cell, contains DNA
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Function of cytoplasm - answersWhere chemical reactions take placero ro ro ro ro ro ro ro




Function of cell membrane - answersControls the flow of substances into and out of the cell
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Function of mitochondria - answersReleases energy into the cell in respiration
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Function of ribosomes - answersWhere protein synthesis takes placero ro ro ro ro ro ro ro




Function of vacuole - answersKeeps the cell turgid (filled with plant sap)
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Function of chlorophyll - answersAbsorbed light energy in photosynthesis
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Function of cell wall - answersProvides structure for the cell, made of cellulose
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Function of chromosomes - answersCarries genetic information ro ro ro ro ro ro




Function of plasmid - answersCarries genetic information ro ro ro ro ro ro




Function of capsule - answersProtects against phagocytosis ro ro ro ro ro ro




Function of flagellum - answersHelps the cell move ro ro ro ro ro ro ro




Adaptations of muscle cells - answersContain proteins that slide over each other making fibres contract
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Contain mitochondria to transfer energy ro ro ro ro




Store glycogen used in cellular respiration ro ro ro ro ro




Adaptations of nerve cells - answersLots of dendrites to make connections to other nerve cells
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The axon carries the nerve impulses from one place to another and are often very long
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