IGCSE Biology Paper-3: Specimen Questions with Answers 298 - 300 of 358

Get unlimited access to the best preparation resource for Bank-PO : get questions, notes, tests, video lectures and more- for all subjects of Bank-PO.

Passage

shows an incomplete diagram of the female urinary system.

Renal Artery, Ureter, and Urethra

Question 298 (2 of 6 Based on Passage)

Edit

Write in Short

Short Answer▾

If the kidneys fail, the patient may be put on a kidney machine.

Explain how a kidney machine works.

Explanation

Hemodialysis

  • When the kidneys fail, it results in a lot of complications and to compensate this situation a technology called dialysis has been developed.
  • It uses a machine filter called a dialyzer or artificial kidney.
  • This is to remove excess water and salt, to balance other electrolytes in the body and remove waste products of metabolism.
  • Blood from the body is removed and flowed through a series of tubes made up of a semipermeable membrane.
  • A dialysate flows on the other side of the membrane, which draws impurities through the membrane.
A State of Relative Constancy

Question 299 (3 of 6 Based on Passage)

Edit

Write in Brief

One Liner▾

The kidneys are part of the body՚s homeostatic

(i) Define homeostasis.

Explanation

A state of relative constancy of the internal environment is known as homeostasis.

Question 300 (4 of 6 Based on Passage)

Edit

Write in Brief

One Liner▾

The kidneys are part of the body՚s homeostatic

(ii) Outline the role of kidneys in homeostasis.

Explanation

The kidneys help maintain homeostasis by regulating the concentration and volume of body fluids. For example, the amount of H + and HCO3 - secreted by the kidneys control the body՚s pH.

Developed by: