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Question-1
Urea is made of:
(A)
Protein stored in the urethra
(B)
Protein broken down in the liver
(C)
Protein broken down in the kidneys
(D)
Urine, salt & water
Question-2
Urea is transported by:
(A)
Plasma
(B)
Blood
(C)
RBC
(D)
WBC
Question-3
Excess amino acids in the body are broken down to form urea in:
(A)
Kidneys
(B)
Liver
(C)
Spleen
(D)
Pancreas
Question-4
Nitrogenous wastes are produced as a result of:
(A)
Photosynthesis
(B)
Ingestion
(C)
Assimilation
(D)
Deamination
Question-5
Most nephrons have short loops and are located almost entirely in the:
(A)
Renal medulla
(B)
Ureters
(C)
Renal cortex
(D)
Renal pelvis
Question-6
Which is the cause of kidney failure?
(A)
Acute kidney injury
(B)
Smoking
(C)
Indigestion
(D)
Blood pressure
Question-7
Which one of the following set of waste products is excreted by the lungs?
(A)
Carbon dioxide & oxygen
(B)
Carbon dioxide & water vapour
(C)
Nitrogen & carbon dioxide
(D)
Oxygen & water vapour
Question-8
Reabsorption of chloride ions from the glomerular filtrate in the kidney tubule is carried out by:
(A)
Osmosis
(B)
Diffusion
(C)
Active transport
(D)
Brownian movement
Question-9
Which one of the following pairs carry waste products?
(A)
Renal artery and renal vein
(B)
Renal artery and ureter
(C)
Renal vein and urethra
(D)
Renal vein and ureter
Question-10
Which one of the following substances is NOT excreted by the human body?
(A)
Carbon dioxide
(B)
Salt
(C)
Urea
(D)
Saliva
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Cambridge Secondary Grade 9
IGCSE
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