Tag: excretion to maintain homeostasis

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Questions Related to excretion to maintain homeostasis

Multiple choice biology excretion to maintain homeostasis kidney dialysis kidney disorders disorders of kidney

In man, the kidney stones are formed due to

  1. Blockage by fats

  2. Deposition of sand in kidney

  3. Protein accumulation in kidneys

  4. Salts such as oxalates are crystallised in pelvis.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In man, the kidney stones are formed due to salts such as oxalates are crystallised in pelvis.

  • A kidney stone is a hard, crystalline mineral material formed within the kidney or urinary tract.
  • Kidney stones form when there is a decrease in urine volume and/or an excess of stone-forming substances in the urine.
  • Dehydration is a major risk factor for kidney stone formation.
  • Symptoms of a kidney stone include flank pain (the pain can be quite severe) and blood in the urine (hematuria).
  • Diagnosis of kidney stones is best accomplished using an ultrasound, IVP, or a CT scan.
  • Treatment includes pain-control medications and, in some cases, medications to facilitate the passage of urine.

Multiple choice biology excretion to maintain homeostasis kidney dialysis kidney disorders disorders of kidney

Most common kidney stones are made up of

  1. Magnesium phosphate

  2. Calcium oxalate

  3. Uric acid

  4. Cholesterol
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
There are four main types of kidney stones. Calcium stones are the most common type of kidney stones. They are usually made of calcium and oxalate (a natural chemical found in most foods) but are sometimes made of calcium and phosphate. Uric acid stones form when urine is often too acidic.
So, the correct option is 'Calcium oxalate'.
Multiple choice biology excretion to maintain homeostasis kidney dialysis kidney disorders disorders of kidney

Which one of following statements is false?

  1. Presence of albumin in urine is albuminuria.

  2. Presence of glucose in urine is glycosuria.

  3. Presence of ketone sugar in urine is ketonuria.

  4. Presence of excess urea in blood is uremia.

  5. Presence of haemoglobin in urine is haemoglobinuria.

  6. None of the above.
Reveal answer Fill a bubble to check yourself
F Correct answer
Explanation

Ketones are the end products of fatty acid metabolism in absence of glucose. These ketones are excreted through urine.

Multiple choice biology excretion to maintain homeostasis kidney dialysis kidney disorders disorders of kidney

Blackening of urine when exposed to air is a metabolic
disorder in human beings. This is due to

  1. Phenylalanine

  2. Tyrosine

  3. Valine replacing glutamine

  4. Homogentistic acid

  5. Glumine replacing valine
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Alkaptonuria is an inherited condition that causes urine to turn black when exposed to air. Mutations in the HGD gene cause alkaptonuria. Homogentisic acid, which is produced when phenylalanine and tyrosine are broken down, accumulates in the body. Excess homogentisic acid is deposited in connective tissues, which causes cartilage and skin to darken. Over time, a buildup of this substance in the joints leads to arthritis. Homogentisic acid is also excreted in urine, making the urine turn dark when exposed to air.

Multiple choice biology excretion to maintain homeostasis kidney dialysis kidney disorders disorders of kidney

Occurrence of excess urea in blood due to kidney failure is

  1. Urochrome

  2. Uraemia

  3. Uricotelism

  4. Ureotelism
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Uremia is the presence of excess urea in the blood. It may occur due to chronic kidney disease or kidney failure. Hence occurrence of excess urea in the blood due to kidney failure is uremia.

So, the correct answer is 'Uraemia'.

Multiple choice biology excretion to maintain homeostasis kidney dialysis kidney disorders disorders of kidney

Uraemia is the occurrence of

  1. Blood in urine

  2. Excess of urea in blood

  3. Excess of sugar in blood

  4. Deficiency of sugar
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Uremia is caused by extreme and usually irreversible damage to your kidneys. This is usually from chronic kidney disease. The kidneys are no longer able to filter the waste from your body and send it out through your urine. Instead, that waste gets into your bloodstream, causing a potentially life-threatening condition.

So, the correct option is 'Excess of urea in blood'.