AQA Biology- triple higher

• What is the process of respiration primarily responsible for?


  Releasing energy from glucose
• What are the products of respiration?


  Carbon dioxide, water, Oxyegn, and ATP
• What is the structure of the trachea?


  A rigid tube made of cartilage that carries air to the bronchi
• What is the function of the bronchi in the respiratory system?


  They carry air to each lung.
• What is the role of alveoli in the respiratory system?


  They are small sacs where gas exchange occurs.
• Why does oxygen diffuse into the blood from the lungs?

  Because oxygen has a higher concentration in the lungs and lower concentration in the blood.
• What is the primary function of red blood cells?


  To carry oxygen from the lungs to the rest of the body.
• What protein do red blood cells contain that is essential for oxygen transport?

  Hemoglobin.
• Do red blood cells have a nucleus?


  No, they do not have a nucleus.
• What is the function of white blood cells?


  To protect the body from pathogens.
• Do white blood cells have a nucleus?

  Yes, they have a nucleus.
• How do white blood cells protect the body from pathogens?

  They engulf bacteria.
• What is the role of plasma in the blood?


  It makes the blood watery so it can flow and carries glucose, amino acids, hormones, and proteins.
• What are platelets?


  Tiny parts of red blood cells that help clot wounds.
• Do platelets have a nucleus?

  No, they do not have a nucleus.
• What are the main components of blood and their functions?

  • Red Blood Cells: Carry oxygen from lungs to body.
  • White Blood Cells: Protect against pathogens.
  • Plasma: Makes blood watery, carries nutrients and hormones.
  • Platelets: Help clot wounds.