CBSE - Life Processes

1 Life Processes 

If the saliva is lacking in salivary amylase then which of the following processes taking place in the buccal cavity will  be affected?

(1) Proteins breaking down into amino acids 
(2) Starch breaking down into sugars
(3) Fats breaking down into fatty acids and glycerol 
(4) Intestinal layer breaking down leading to ulcers

2 Life Processes 

The correct pathway of blood in circulatory system is

(1) Auricles -> Ventricles -> Arteries -> Veins
(2) Ventricles -> Auricles -> Veins -> Arteries
(3) Ventricles -> Veins -> Arteries -> Auricles
(4) Veins -> Ventricles -> Arteries -> Auricles

3 Life Processes 

Which one of the following does not contain any enzyme?

(1) Bile 
(2) Gastric juice 
(3) Saliva 
(4) Pancreatic juice

4 Life Processes 

Which one is the most poisonous excretory substance

(1) Uric Acid
(2) Urea
(3) Ammonia
(4) Hippuric Acid

5 Life Processes 

Plant part used as medicine of Terminalia arjuna-
(1) Leaves (2) Fruits (3) Bark (4) Roots

6 Life Processes 

The site for complete digestion of carbohydrates, proteins and fats is

(1) Large intestine 
(2) Stomach 
(3) Small intestine 
(4) Mouth

7 Life Processes 

In humans, disorders of nervous system are caused due to the deficiency of vitamin

(1) Pyridoxine  
(2) Retinol 
(3) Phylloquinone  
(4) Ascorbic acid

8 Life Processes 

The instrument for measuring blood pressure is called
(1) Manometer (2) Sphygmomanometer (3) Barometer (4) Potentiometer

9 Life Processes 

Some organs of man have their own specific functions but carry out excretion as a secondary function. Identify them.
(1) Lungs, Kidney, Nephron (2) Liver, Skin, Lungs
(3) Skin, Kidney, Intestine    (4) Intestine, Liver, Kidney

10 Life Processes 

Iodine is necessary for the synthesis of which hormone ?
(1) Auxin (2) Thyroxin (3) Adrenaline (4) Insulin