When urine is allowed to stand, it gives strong ammoniacal odour, due to
conversion of urea to ammonia via ornithinearginine cycle
conversion of urea to ammonia by bacteria
conversion of urea and uric acid to ammonia
none of these
Correct Answer :
B. conversion of urea to ammonia by bacteria
Related Questions
Under normal conditions which one is completely reabsorbed in the renal tubule?
Urea
Uric acid
Salts
Glucose
Columns of Bertini in the kidneys of mammals are formed as extension of
medulla into pelvis
medulla into cortex
cortex into medulla
pelvis into ureter
The plasma passing through the glomerulus loses about
50% of its volume as filtrate
20% of its volume as filtrate
80% of its volume as filtrate
40% of its volume as filtrate
The normal glomerular filtration rate in man is
125 ml/minute
250 ml/minute
500 ml /minute
1200 ml/minute
Of the 180 litres of glomerular filtrate produced each day the amount of reab-sorption is
96 per cent
80 per cent
95 per cent
99 per cent
Loop of Henle is concerned with
excretory system
reproductive system
nervous system
muscular system
Malpighian corpuscle in vertrf>rate kidney
consists of Bowman's capsule and afferent arteriole
consists of glomerulus and Bowman's capsule
consists of ciliated channels
is inner wall of Bowman's capsule and glomerulus
In which part of the excretory system of a mammal can you first use the term urine for the fluid it contains?
Bowman's capsule
Loop of Henle
Collecting tubule
Urinary bladder
In ancestral verterbrates the kidney is known as
glomerular type
aglomerular type
holonephric type
metanephric type
The total volume of blood passing through the kidneys in one minute is about
125 ml
500 ml
1200 ml
250 ml
In kidney, glucose is mainly absorbed by
Bowman's capsule
Loop of Henle
Proximal convoluted tubule
Distal convoluted tubule
In rabbit, the urinary bladder opens into
uterus
urethra
vestibule
ureter
Malpighian bodies are found in
kidney of vertebrates and is involved in ultrafiltration
kidney of vertebrates and is involved in passive filtration
kidney of vertebrates and is involved in selective reabsorption
insects and involved in excretion
The plasma resembles in its composition with the filtrate produced in the glomerulus except for the presence of
chlorides
amino acids
glucose
none of these
In mammalian kidney, the pyramids are seen in
cortex
pelvis
medulla
hilus
Water absorption in the loop of Henle and distal part of tubule is controlled by
antidiuretic hormone
aldosterone
renin
both (a) and (b)
Vitamin excreted in urine by higher vertebrates is
A
B
K
C
Separation of amino acid into amino and carboxyl group is known as
deamination
excretion
animation
egestkxi
Ammonia is the chief nitrogenous excretory material in
reptiles
turtles
tadpoles
amphibians
Urea is transported by
WBC
RBC
Blood
Plasma
The blood leaves the glomerulus by
afferent arteriole
efferent arteriole
renal artery
renal veins
Diuresis is the condition in which
the excretion of volume of urine increases
the excretion of volume of urine decreases
the kidneys fail to excrete urine
the water balance of blood is disturbed
The loop of Henle is poorly developed or absent in............as it is concerned with reabsorption of water.
desert mouse
carnivorous bird
fish
snake
A condition in which urine contains blood is termed as
creatinine
anuria
haematuria
ketonuria
The hormone which converts angioten-sinogen to angiotensin is
angio tensinase
renin
rennin
none of these
Birds and reptiles excrete their nitrogenous waste in the form of
uric acid and urea
urea
urea and uric acid respectively
uric acid
The filtrate from glomerulus contains
blood without blood cells and proteins
plasma without sugar
blood with proteins but without cells
blood without urea
The highest concentration of urea is found in
renal vein
hepatic portal vein
dorsal aorta
hepatic vein
Urea is formed from ammonia and carbon dioxide in
liver cells
every living cell
kidney and muscles
liver and kidney
The liquid which collects in the cavity of Bowman's capsule is
concentrated urine
blood plasma minus blood proteins
a solution containing excretory wastes
a solution containing wastes