AQA GCSE COMBINED SCIENCE TRILOGY B2
Study Guide Graded A+
1). Plasma
Ans: Transports dissolved substances around the body
2). Red blood cells
Ans: Transports oxygen from lungs to body cells
3). White blood cells
Ans: Protects body against infection
4). Ateries
Ans: Carries blood away from the heart
5). Veins
Ans: Carries blood into the heart
6). Capillaries
Ans: Substances such as oxygen and glucose to diffuse in and out of cells
7). Platelets
Ans: Helps the blood to clot
8). Correlation
Ans: Doesn't prove cause simply suggests they might be linked
9). Causal mechanism
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, Ans: something that explains how one factor influences another through a biological
process
10). Risk factors
Ans: Factors leading to an increased rate of disease
11). Cancer
Ans: Changes in cells that lead to uncontrolled growth and mitosis
12). Benign tumour
Ans: Growth of abnormal cells contained in one area in a membrane. Doesn't invade
other parts of the body
13). Malignant tumours
Ans: Invade neighbouring tissues and move into bloodstream and spread to form
secondary tumours.
14). Health
Ans: State of physical and mental well being
15). Coronary arteries
Ans: Provide oxygen to muscle cells of heart used in respiration for contraction
16). Chd (coronary heart disease)
Ans: Layers of fatty material build up in coronary ateries
17). Upper epidermis
Ans: Transparent- allows light to pass through to the photosynthetic cells
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Study Guide Graded A+
1). Plasma
Ans: Transports dissolved substances around the body
2). Red blood cells
Ans: Transports oxygen from lungs to body cells
3). White blood cells
Ans: Protects body against infection
4). Ateries
Ans: Carries blood away from the heart
5). Veins
Ans: Carries blood into the heart
6). Capillaries
Ans: Substances such as oxygen and glucose to diffuse in and out of cells
7). Platelets
Ans: Helps the blood to clot
8). Correlation
Ans: Doesn't prove cause simply suggests they might be linked
9). Causal mechanism
PaperStoc.com Page 1 of 8
, Ans: something that explains how one factor influences another through a biological
process
10). Risk factors
Ans: Factors leading to an increased rate of disease
11). Cancer
Ans: Changes in cells that lead to uncontrolled growth and mitosis
12). Benign tumour
Ans: Growth of abnormal cells contained in one area in a membrane. Doesn't invade
other parts of the body
13). Malignant tumours
Ans: Invade neighbouring tissues and move into bloodstream and spread to form
secondary tumours.
14). Health
Ans: State of physical and mental well being
15). Coronary arteries
Ans: Provide oxygen to muscle cells of heart used in respiration for contraction
16). Chd (coronary heart disease)
Ans: Layers of fatty material build up in coronary ateries
17). Upper epidermis
Ans: Transparent- allows light to pass through to the photosynthetic cells
PaperStoc.com Page 2 of 8
