Assertion : Phenylketonuria is a disease in which excretion of phenylalanine occurs in urine.
Reason : It is due to dietary imbalance.
If both Assertion and Reason are true and Reason is the correct explantion of Assertion
If both Assertion and Reason are true and Reason is not the correct explanation of Assertion
If Assertion is true but Reason is false
If Assertion is false but Reason is true
C.
If Assertion is true but Reason is false
Phenlyketonuria is a genetic disorder in which there is disordered metabolism of the amino acid phenylalanine, leading to severe mental retardation of affected children. The disease is caused by the absence or deficiency of the enzyme phenylalanine hydroxylase, which results in the accumulation of phenylalanine in all body fluids. There are also high levels of the ketone phenylpyruvate in the urine.
If Henle's loop were absent from mammalian nephron, which of the following is to be expected?
The urine will be more concentrated
The urine will be more dilute
There will be no urine formation
There will be hardly any change in the quality and quantity of urine formed
Glomerular filtrate is
blood minus blood corpuscles and plasma protein
blood minus corpuscles
mixture of water, ammonia and corpuscles
urine
Which of the following are uricotelic animals?
Rohu and frog
Camel and frog
Lizard and crow
Earthworm and eagle
Thrombokinase is associated with
elimination of urea and other excretory products from the body
production of erythrocytes from the bone marrow
pulmonary and systemic circulation
cardiac cycle and its regulation
cardiac cycle and its regulation
Match Column I with Column II regarding human excretory system. Choose the correct option.
| Column I | Column II |
| i. Epithelial cells of Bowman's capsule | A. Juxtamedullary nephron |
| ii. Extension of cortex between the medullary pyramids as renal columns | B. Vasa recta |
| iii. Nephrons with long loop of Henle running deep into the medulla | C. Juxtamedullary apparatus |
| iv. A fine vessel of the peritubular capillaries running parallel to Henle's loop | D. Podocytes |
| v. A special sensitive region in the DCT and afferent arteriole at the location of their contact |
E. Columns of Bertin F. Cortical nephron |
i - C; ii - B; iii - A; iv - D; v - E
i - E; ii - A; iii - B; iv - C; v - D
i - D; ii - C; iii - B; iv - E; v - A
i - D; ii - E; iii - A; iv - B; v - C
i - D; ii - E; iii - A; iv - B; v - C
