Additional Biology

zaroon_riaz
Flashcards by , created almost 6 years ago

Ks3 Science Flashcards on Additional Biology, created by zaroon_riaz on 05/04/2013.

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zaroon_riaz
Created by zaroon_riaz almost 6 years ago
GROUPED DATA FREQUENCY TABLES: MODAL CLASS AND ESTIMATE OF MEAN
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GCSE History – Social Impact of the Nazi State in 1945
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Macbeth Quiz
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AS AQA Accounting Unit 1 - FLASH CARDS
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Unit 1: Business Studies GCSE
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MATTERS OF LIFE AND DEATH - UNIT 1, SECTION 2 - RELIGIOUS STUDIES GCSE EDEXCEL
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Key Terms - Religion and community cohesion
jackson.r08
Question Answer
Topic 1 The Components of Life
Components + function of organelles in both animal and plant cell Cell membrane: allows the diffusion of certain molecules (glucose, oxygen) Cytoplasm: contains tiny organelles which carry out life processes Mitochondria: in cytoplasm responsible for respiration Nucleus: contains DNA and controls cell activity
Components + function of organelles in only plant cell Cell wall: made of cellulose, helps keep the plant in shape Large Vacuole: filled with cell sap to help keep cell rigid Chloroplasts: contains chlorophyll, absorbs light for photosynthesis
Light Microscopes x1500 magnification uses visible light
Electron Microscopes x2,000,000 magnification uses electron beams
Bacterium cell Cell wall: not made of cellulose, help keep shape but more flexible Cell membrane: control movement of substances Chromosomal DNA: giant loop of DNA Plasmid DNA: extra loops of genetic information Flagellum: helps swimming
Length of an object Length of magnified object/ magnification
What are DNA, genes and chromosomes? DNA: carries genetic information Genes: section of DNA that codes for a specific protein Chromosomes: made up of a string of genes
Describe the structure of DNA > Double stranded helix structure > Linked at regular intervals with complementary base pairs > Guanine and Cytosine > Adenine and Thymine > Joint together with weak hydrogen bonds