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COMBINED SCIENCE TRILOGY B2(AQA GCSE) PREP EXAM AND COMPLETE ANSWERS. $9.79   Add to cart

Exam (elaborations)

COMBINED SCIENCE TRILOGY B2(AQA GCSE) PREP EXAM AND COMPLETE ANSWERS.

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  • Course
  • Combined Science
  • Institution
  • Combined Science

Plasma - Answer Transports dissolved substances around the body red blood cells - Answer Transports oxygen from lungs to body cells white blood cells - Answer Protects body against infection Ateries - Answer Carries blood away from the heart Veins - Answer Carries blood i...

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  • October 25, 2024
  • 6
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Combined Science
  • Combined Science
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COMBINED SCIENCE TRILOGY B2(AQA
GCSE) PREP EXAM AND COMPLETE
ANSWERS.

Plasma - Answer Transports dissolved substances around the body



red blood cells - Answer Transports oxygen from lungs to body cells



white blood cells - Answer Protects body against infection



Ateries - Answer Carries blood away from the heart



Veins - Answer Carries blood into the heart



Capillaries - Answer Substances such as oxygen and glucose to diffuse in and out of cells



Platelets - Answer Helps the blood to clot



Correlation - Answer Doesn't prove cause simply suggests they might be linked



causal mechanism - Answer something that explains how one factor influences another through a
biological process



risk factors - Answer Factors leading to an increased rate of disease



Cancer - Answer Changes in cells that lead to uncontrolled growth and mitosis

, Benign tumour - Answer Growth of abnormal cells contained in one area in a membrane. Doesn't
invade other parts of the body



Malignant tumours - Answer Invade neighbouring tissues and move into bloodstream and spread to
form secondary tumours.



Health - Answer State of physical and mental well being



coronary arteries - Answer Provide oxygen to muscle cells of heart used in respiration for contraction



CHD (coronary heart disease) - Answer Layers of fatty material build up in coronary ateries



upper epidermis - Answer Transparent- allows light to pass through to the photosynthetic cells



lower epidermis - Answer contains stomata



palisade mesophyll - Answer Full of chloroplasts for photosynthesis



Spongy mesophyll - Answer Full of air spaces for c02 to diffuse from stomata to spongy mesophyll to
palisade cells



Xylem - Answer Transports water from roots to stem and leaves.



Structure of xylem - Answer Hollow tube strengthened by lignin for efficient transport of water in
transpiration stream



Phloem - Answer Transports dissolved sugars from leaves to rest of plant. Stored as starch or used for
respiration



Structure of phloem - Answer Tubes of elongated cells. Cell sap move from one phloem cell to another
through pores in end walls

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