Edexcel iGCSE Biology Exam Questions With Assured Answers

Edexcel iGCSE Biology Exam
Questions With Assured Answers

Processes of living organisms - ANSMovement, reproduction, sensitivity, control, growth, respiration,
excretion, nutrition



Types of living organisms - ANSAnimal, Plant, Bacteria, Protoctist, Fungi, Virus



Structure of Animal Cells - ANSCell Membrane, Cytoplasm, Nucleus



Characteristics of Animals - ANSMulticellular, feed on other organisms, carbohydrates as glycogen



Example of Animals - ANSHuman or Mosquitos



Invertabrates - ANSAnimals which lack a backbone. E.g. Worms



Vertabrates - ANSAnimals with a backbone. E.g. Humans



Structure of Plant Cells - ANSCellulose cell wall, Cell membrane, Cytoplasm, Chloroplasts, Sap
Vacuole, Nucleus



Characteristics of Plants - ANSMulticellular, contain chloroplasts to carry out photosynthesis,
cellulose cell walls, carbohydrates as starch or sucrose



Example of Plants - ANSFlowering plants: maize, herbaceous legumes: peas



Structure of Fungi - ANSChitin cell wall, cell membrane, cytoplasm, vacuole, nucleus



Characteristics of Fungi - ANSMulticellular or unicellular, hyphae structures, no photosynthesis,
nutrition by secreting digestive enzymes on dead organisms, carbohydrates as glycogen

,Example of Fungi - ANSMulticellular: Mushrooms, Unicellular: Yeast



Characteristics of Protoctists - ANSMicroscopic, usually unicellular, can resemble plants or animals



Example of Protoctists - ANSAmoeba, Chlorella



Structure of Bacteria - ANSCell wall, cell membrane, capsule, plasmids, nucleoid chromosome,
sphere, rod, or spiral shape



Characteristics of Bacteria - ANSUnicellular, small organisms, circular DNA instead of nucleus, some
can photosynthesis others are saprotrophic feeding



Example of Bacteria - ANSLactobacillus bulgaricus, Pneumoccus



Structure of Virus - ANSMembrane from host cell, protein coat, DNA or RNA



Characteristics of Virus - ANSSmallest organisms, non cellular, parasitic pathogens



Example of Viruses - ANSInfluenza, HIV



Pathogens - ANSOrganisms which cause disease, usually fungi or bacteria



Levels of organisation - ANSOrgan systems, Organs, tissues, cells, organelles



Organ systems - ANSA group of organs that work together to perform a particular function



The organ systems - ANSDigestive, respiratory, circulatory, excretory, nervous, hormonal,
reproductive



Organs in the Digestive system - ANSOesophagus, stomach, intestines



Function of the Digestive system - ANSDigest and absorb food

, Organs in the Respiratory system - ANSLungs and trachea



Function of the Respiratory system - ANSGas exchange



Organs in the Circulatory system - ANSHeart and bloods vessels



Function of the Circulatory system - ANSCarry oxygen and food around the body



Organs in the Excretory system - ANSkidney's, bladder, liver



Function of the Excretory system - ANSRemove wastes and toxins



Organs in the Nervous system - ANSBrain, spinal cord, nerves



Function of the Nervous system - ANSSend messages and responses around the body



Function of Skeletal and Muscle systems - ANSMovement, support and protection



Organs in the reproductive system - ANSOvaries and Testes



Function of reproductive system - ANSProduce an offspring



Tissues - ANSCells with a similar function that are grouped together



Organs - ANSA group of tissues acting together to perform a particular function



Cells - ANSStructural units of organisms



Organelles - ANSStructures inside cells like cytoplasm and cell membranes