state why staining is needed in the preparation of a microscopic slide for the study on blood cells.

water is not sprayed on fires originating from oil. why?

write down two main structural differences that are seen between the palisade cell layer and the mesophyll layer in leaves.

state one function performed by muscles other than engaging in the task of motion.
name a hormone related to the functioning of muscles.

a patient who should be given insulin may die when he is given an excessive dose of insulin. why?

the average concentration of glucose in 100ml of blood of a healthy person falls in the range of 80mg-90mg. state three functions that take place in the body in this regard, when this concentration falls below this level.