Q7 of 48 Page 104

Differentiate between the following pairs of terms:

Excretion and katabolism.











Excretion



Katabolism



Excretion, the process by which animals rid themselves of waste products and of the nitrogenous by-products of metabolism.



Katabolism is the set of metabolic pathways that break down molecules into smaller units that are either oxidized to release energy, or used in other anabolic reactions.




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7

Differentiate between the following pairs of terms:

Renal pelvis and renal papilla.

 7

Differentiate between the following pairs of terms:

Urea and urine.

 8

Name the main nitrogenous metabolic waste excreted out by mammals including humans.

 9

Match the items in Column I with those in Column II and write down the matching pairs.























Column I



Column II



(a) Bowman’s capsule



(i) Renal artery



(b) Contains more CO2 and less urea



(ii) Regulates amount of water excreted



(c) Antidiuretic hormone



(iii) Renal vein



(d) Contains more urea



(iv) Glomerculus