Describe an investigation to find out if adding vitamin D to the diet of young children will help to prevent rickets (a deformation of the legs).
Your answer should include experimental details and be written in full sentences.
(5)

What would happen if the tubing with the yellow band was placed in a beaker of distilled water?

Most enzyme names end in the

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.