BIO 數問~高手請進

1. Glomerular filtrate has a higher urea concentration, as urea is a waste product of body cells which will be filtrated by the glomerulus through ultrafiltration and reabsorbtion.

2. Well-aerated soil promotes the growth and reaction of nitrifying bacteria and decomposer as both bitrifying bacteria and decomposer carry out aerobic respiration which oxygen should be present. Also, well-aerated soil contains and provides much more nutrients for the nitrifying bacteria and the decomposer.

3. Enzyme is protein in nature and hormone is composed of fat. Enzyme acts as an catalyst in a reaction in body cells. Hormone travels through blood and carry out long-lasting but slow effect to the whole body.

1) I have already answered with explanations see
http://hk.knowledge.yahoo.com/question/?qid=7007032203327
2)




Type of soil


Aeration


reasons



Sandy


Good


They are large size and hence the spaces between them is large.



Clay


Poor


They are small size and hence the spaces between them is small



loam


mediate


The size of the soil is mediate

3)




description


enzyme


hormone



nature


protein


Some of them are not such as steroid hormone made by steroid such as testosterone and oestrogen



functions


To digest something such as amylase or cholinesterase to decompose the acetylcholine


To control heart beat (adrenaline) and other body functions such as growth due to growth hormone



effect is


localized


for whole body



transportation


By duct such as pancreatic duct


By blood



During


Just a short time after it breaks down


Long term effect



response


Fast once enzyme is present


slow


I hope my answer can help you.