Circulatory system- blood (Edexcel GCSE Biology Combined Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What proportion of blood volume does plasma make up?
What proportion of blood volume does plasma make up?
Just over half
Which substance does plasma transport from the liver to the kidneys?
Which substance does plasma transport from the liver to the kidneys?
Urea
Why do red blood cells have no nucleus?
Why do red blood cells have no nucleus?
To carry more haemoglobin
What is the advantage of red blood cells being biconcave in shape?
What is the advantage of red blood cells being biconcave in shape?
Increases surface area for absorption
What is formed when haemoglobin combines with oxygen in the lungs?
What is formed when haemoglobin combines with oxygen in the lungs?
Oxyhaemoglobin
What is the process by which phagocytes destroy pathogens?
What is the process by which phagocytes destroy pathogens?
Phagocytosis
What do lymphocytes produce to fight pathogens?
What do lymphocytes produce to fight pathogens?
Antibodies
How do antibodies help phagocytes engulf pathogens more easily?
How do antibodies help phagocytes engulf pathogens more easily?
By coating and clumping pathogens
What are platelets?
What are platelets?
Cell fragments from bone marrow
What do platelets release to trigger blood clot formation?
What do platelets release to trigger blood clot formation?
Chemicals