Back to the full dot-point answer
SingaporeBiologyQuick questions
Transport in Organisms
Quick questions on The blood and its functions: N(A)-Level Biology Transport in Organisms
7short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are red blood cells?Show answer
Red blood cells carry oxygen from the lungs to all the body cells. They are adapted for this job in three ways. They contain haemoglobin, a red pigment that joins with oxygen. They have a biconcave shape (a disc dented on both sides), which gives a large surface area for oxygen to diffuse in and out.
What are white blood cells?Show answer
White blood cells protect the body against disease. There are two main jobs. Some white blood cells engulf and digest germs, swallowing bacteria whole. Others make antibodies, chemicals that destroy germs or make them clump together so they are easier to deal with.
What are platelets?Show answer
Platelets are tiny fragments that help the blood to clot. When a blood vessel is cut, the platelets help form a clot, a kind of plug, that seals the wound. This stops too much blood being lost and stops germs from entering.
What is plasma?Show answer
Plasma is the liquid part of blood. It carries dissolved substances around the body, including digested food such as glucose and amino acids, waste such as carbon dioxide and urea, and hormones. It also carries heat, which helps spread warmth around the body.
What is q1?Show answer
Name the part of the blood that carries oxygen. [1 mark]
What is q2?Show answer
State the function of platelets. [1 mark]
What is q3?Show answer
Explain why a red blood cell has no nucleus. [2 marks]
Have a question we have not covered?
This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.