9700/12 Biology Oct Nov 2020 Online Test | Cambridge AS and A Level MCQ

Which comparisons of blood, tissue fluid and lymph are correct?
1) Blood has a higher concentration of proteins than tissue fluid because the larger proteins are too big to pass through the endothelial pores into tissue fluid.
2) Lymph has a higher concentration of lymphocytes than tissue fluid as a high number of lymphocytes are located in lymph nodes.
3) Macrophages are too large to leave the blood to enter tissue fluid whereas neutrophils,…