SECTION NAME_Unsolved Paper
Chapter: Life Processes | Topic: Dialysis
SECTION NAME_UNSOLVED PAPER
Topic: Dialysis
Q1. Dialysis is mainly used when:
- The lungs cannot exchange gases
- The kidneys are unable to filter blood properly
- The stomach cannot digest food
- The heart cannot pump blood
Q2.The machine used to remove certain wastes and excess water from the blood is called:
- Ventilator
- Dialysis machine
- Pacemaker
- Microscope
Q3.In a dialysis machine, blood is separated from the dialysis fluid by a:
- Muscular wall
- Semi-permeable membrane
- Bone layer
- Thick fatty tissue
Q4. Which substance is normally removed from the blood during dialysis?
- Urea
- Oxygen
- Haemoglobin
- Glucose
Q5.A patient with severely reduced kidney function visits a hospital regularly for treatment that helps remove wastes from the blood. Which treatment is most likely being used?
- Vaccination
- Dialysis
- Physiotherapy
- Radiotherapy
Q6. The dialysis fluid is prepared so that useful substances are not removed from the blood in large amounts. This is mainly related to:
- The concentration of substances in the dialysis fluid
- The colour of the dialysis machine
- The size of the hospital room
- The temperature outside the hospital
Short questions
Q1. What is dialysis? Under what condition may it be required?
Q2. What is the role of a semi-permeable membrane in the dialysis process?
Q3.Why is the dialysis fluid prepared with carefully controlled concentrations of substances?
Q4. A student learns that a family member visits a hospital several times for dialysis. Explain why regular dialysis sessions may be needed when kidney function is severely reduced.
Q5. State any two differences between the natural functioning of kidneys and dialysis treatment.
Q6. Why is it important to remove nitrogenous wastes from the blood?
Q1.Explain the working of a dialysis machine. Describe how blood is cleaned and returned to the patient’s body.
Q2. Compare the functions of healthy kidneys and a dialysis machine with respect to:
Removal of wastes
Regulation of water balance
Removal of excess salts
Continuity of functioning
Role in maintaining internal balance
Present your answer in a suitable table.
Q3. A doctor explains that dialysis is a supportive treatment but does not perform every function of healthy kidneys in exactly the same way. Discuss the importance and limitations of dialysis in maintaining the health of a person with kidney failure.
Q1. A patient undergoes dialysis 3 times each week. Each session lasts 4 hours.
Calculate:
The total number of dialysis hours in one week.
The total number of dialysis hours in 4 weeks.
The average number of dialysis hours per day over the 4-week period.
Q2. A hospital records the following duration of dialysis sessions for a patient:
Answer the following:
Calculate the total duration of dialysis during the week.
Calculate the average duration of one dialysis session.
If the same schedule continues for 4 weeks, calculate the total number of dialysis hours.
Q3. Read the following case:
During a school health-awareness programme, students learn that a patient’s kidneys are unable to remove enough urea, excess salts, and water from the blood. The doctor recommends regular dialysis.
Based on your understanding of dialysis:
Explain why dialysis may be required in this situation.
Describe how the dialysis machine helps remove unwanted substances from the blood.
Explain the importance of the semi-permeable membrane and dialysis fluid.
Discuss why dialysis should be carried out under proper medical supervision.