What is true of urea biosynthesis?

(1) Uric acid is starting point

(2) Urea is synthesised in lysosomes

(3) Urea cycle enzymes are located inside mitochondria

(4) Urea is synthesised in kidney

Subtopic:  Nitrogenous Excretory Products |
 55%
AIIMS - 2015
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

Assertion   :       Ammonia should be eliminated from the body as rapidly as it is formed.

Reason      :       Ammonia is insoluble in water.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Nitrogenous Excretory Products |
 65%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

Assertion   :       Urinary bladder and ureters are lined by transitional epithelium.

Reason      :       Ureters carry the urine to urinary bladder where it is stored temporarily.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Micturition Reflex |
 71%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

advertisementadvertisement

Assertion   :       In vertebrates, the liver is also referred as an accessory excretory organ.

Reason      :       Liver helps kidneys in the secretion of urine.
1.  Both A & R are true and the R is the correct explanation of the A.
2.  Both A & R are true but the R is not the correct explanation of the A.
3.  A is true statement but R is false.
4.  Both A and R are false statements.

Subtopic:  Role of other Organs in Excretion |
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

Assertion   :       Sharks are said to be ammonotelic animals.

Reason      :       Sharks can retain considerable amounts of ammonia in their blood.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Nitrogenous Excretory Products | Osmoregulation |
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

Assertion   :       Aquatic mammals like whales and seals are said to be ureotelic animals.

Reason      :       It is because of the fact that their main nitrogenous waste product is urea.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Nitrogenous Excretory Products |
 73%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

advertisementadvertisement

Assertion   :       Death ensues if waste products are not removed from the body.

Reason      :       Excretory system removes the nitrogenous waste products from the body.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Nitrogenous Excretory Products |
 68%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

Assertion   :       Camel can go without water for long periods.

Reason      :       Camels stores water in the pouches of their rumen and fat in their hump.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Nitrogenous Excretory Products |
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

Assertion   :       Renal threshold of glucose is said to be 180 mg per 100 ml.

Reason      :       Glucose starts appearing in the urine when its blood level exceed 180 mg per 100 ml of blood.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
 59%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

advertisementadvertisement

Assertion   :       Earthworms excrete both ammonia and urea.

Reason      :       Excretion in earthworm depends on the environment.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Nitrogenous Excretory Products |
 62%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints