life process class 10

In amoeba food is digested in

• food vacuole

• mitochondria

• psuedoodia

• chloroplast

The breakdown of pyruvate to give carbon dioxide water and energy takes place in

• Cytoplasm

• Mitochondria

• chloroplast

• Nucleus

Saliva contains an enzyme for digestion of starch

• Amylase

• Lipase

• Trypsin

• Glycerol

What protects the inner lining of stomach from hydrochloric acid

• Carbon dioxide

• Protein

• Mucus

• Fat layer

Which one is the structural and functional unit of kidney

• Nexon

• Nephron

• Ureter

• Urethra

In this type of nutrition solid and complex organic food is directly taken into the body

• Saprophytic nutrition

• Parasitic nutrition

• Holozoic nutrition

• None of the above

What is correct about bile juice in human digestion

• Bile does not contain any enzyme

• Bile is alkaline

• Bile salt is present which helps to Tu emulsify the fat

• All of the above

Pulmonary veins contain

• Oxygenated blood

• Deoxygenated blood

• Both oxygenated and deoxygenated blood

• All of the above

Why do the walls of trachea not collapse when there is less air in it?

• Supported by rings of cartilage

• Supported by Rib cage

• No air is left the question is wrong

• Because of strong muscles

Why does lack of oxygen in muscles often lead to cramps among cricketers?

• Formation of lactic acid during lack of oxygen

• Conversion of pyruvate to ethanol and CO2 in absence of oxygen

• Due to formation of CO2 and H2O in mitochondria

• None of the above