Edexcel OLevel Biology revision notes

Your Progress: 74 of 217 (34%)

Lesson

Lesson-2.7.14- understand how platelets are involved in blood clotting, which prevents blood loss and the entry of micro-organisms.

No content available for this lesson.

Lesson-2.7.13- understand how vaccination results in the manufacture of memory cells, which enable future antibody production to the pathogen to occur sooner, faster and in greater quantity.Previous Lesson- 2.7.15- describe the structure of the heart and how it functions.Next