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Nutrition, Respiration and Excretion

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

An artificial kidney is a device to remove________from the blood through dialysis process.

a)

glucose

b)

protein

c)

nitrogenous wastes

2.

Artificial kidney is similar to the function of kidney but it is different since there is no __________involved.

a)

Absorption

b)

reabsorption

c)

filteration

3.

The filtration units in each kidney is called as_______

a)

Nephron

b)

Neuron

c)

Alveoli

4.

The cup shaped part of nephron that collects filtrate is called________

a)

glomerulus

b)

Bowman's capsule

c)

Henle's loop

5.

Some of the substances in the initial filtrate in Bowman's capsule such as glucose, ________, salts,and water are reabsorbed as the urine flows along the tube.

a)

urea

b)

uric acid

c)

aminoacids

6.

Urine formed in each kidney enters a long tube called ______which connects the kidneys with the urinary bladder

a)

Urethra

b)

Ureter

c)

Urinary bladder

7.

Artificial kidneys have tubes with _________lining suspended in a tank filled with dialysing fluid whose concentration is the same as that of blood, but without nitrogenous waste.

a)

semi permeable

b)

permeable

c)

impermeable

8.

Normally in a healthy adult the initial filtrate in the kidneys is about _______litres daily

a)

150

b)

120

c)

180

d)

2

9.

In a healthy adult normally the volume of urine actually excreted is only _________litre a day, the remaining is reabsorbed in the kidney tubules.

a)

one or two

b)

5 or 6

c)

180

10.

Kidneys are present in __________ in our body on either side of backbone.

a)

Abdomen

b)

Chest

c)

stomach

11.

In human beings the air passing through nostrils is filtered by__________lining the passage

a)

Filter paper

b)

Alveoli

c)

fine hairs and mucus

12.

Rings of cartilage present in our throat ensure that the air passage does not __________

a)

expand

b)

collapse

c)

dissolve

13.

Smoking destroys______of respiratory tract due to which germs, dust, smoke and other harmful chemicals enter lungs and cause cancer, cough and infections

a)

blood

b)

WBC

c)

cilia

14.

The balloon like structures found inside lungs are called______

a)

nephrons

b)

Alveoli

c)

bronchi

15.

When we breathe in ,we _______our ribs and ________our diaphragm and the chest cavity becomes larger as a result.

a)

lift, flatten

b)

lower, raise

c)

flatten, flatten

16.

The blood brings _____from the rest of the body for release into the alveoli, which is breathed out.

a)

Nitrogen

b)

Oxygen

c)

Carbon dioxide

17.

In human beings the respiratory pigment is ________which has affinity for oxygen and so helps in taking up this gas from the air and carrying it to tissues.

a)

chlorophyll

b)

haemocyanin

c)

haemoglobin

18.

Salivary amylase breaks down _______into sugar

a)

starch

b)

proteins

c)

fats

19.

Gastric glands produces a protein digesting enzyme called ___________that gets activated by hydrochloric acid.

a)

Trypsin

b)

Lipase

c)

Pepsin

20.

The pancreatic juice enzymes such as trypsin, lipase and amylase requires alkaline medium to become active.________juice helps in making the food coming from stomach alkaline.

a)

Pancreatic

b)

Gastric

c)

Bile