Fsc part 2 online preparation for biology chapter 15 (Homeostasis)

Online Short Questions For Chapter 1 "12th Class Biology Chapter 15 Short Questions Preparation "

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Biology - 12th Class Biology Chapter 15 Short Questions Preparation

Question # 1

Differentiate between ureotelic and uricotelic animals.

  • Ans 1: Ureotelic Animals: Animals which excrete urea are called ureotelic e.g sharks.
  • Ans 2: Uricotelic Animals: Animals which excrete uric acid are called Uricotelic.e.g Birds, insects.
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Prepare Complete Set Wise Questions For Chapter 1 "12th Class Biology Chapter 15 Short Questions Preparation "

12th Class Biology Chapter 15 Short Questions Preparation - Set 1

Question # 1

Differentiate between ureotelic and uricotelic animals.

  • Ans 1: Ureotelic Animals: Animals which excrete urea are called ureotelic e.g sharks.
  • Ans 2: Uricotelic Animals: Animals which excrete uric acid are called Uricotelic.e.g Birds, insects.
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12th Class Biology Chapter 15 Short Questions Preparation - Set 2

Question # 1

What is hypertonic environment and what changes occur in a cell in such environment?

  • Ans 1: The more concentrated external environment is called hypertonic environment. The hypertonic environment makes the cell solution concentrated and cell shrinks due loss of water.
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12th Class Biology Chapter 15 Short Questions Preparation - Set 3

Question # 1

What are heat-shock proteins?

  • Ans 1: Most plants have adopted to survive in heat stress as the plants of temperate regions face the stress of 40°C and above temperature.The cells of these plants synthesize large quantities of special proteins called heat shock proteins.These proteins embrace enzymes and other proteins thus help to prevent denaturation.
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12th Class Biology Chapter 15 Short Questions Preparation - Set 4

Question # 1

What is hemodialysis and peritoneal dialysis?

  • Ans 1: Hemodialysis: mean cleaning of blood. In it blood is circulates through a machine which contains a dialyzer. Dialyzer has two spaces separated by thin membrane. Blood passes through one side of membrane and dialysis fluid from other side. The waste and excess water pass from the blood through the membrane into the dialysing fluid.
  • Ans 2: Peritoneal dialysis: work on same principle except abdomen has a peritoneal cavity, lined by a thin epithelium called peritoneum. Peritonial cavity is filled with dialysis fluid that enters the body through a catheter. Excess water and wastes pass through the peritoneum into the dialysing fluid.
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15th Chapter

12th Class Biology Chapter 15 Short Questions

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