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MCQ on Life Processes for Students
During the process of respiration :
1. enzymes are synthesized
2. large number of ATP molecules are utilized
3. organic substances are utilized
4. fats never participate
Option 3 – organic substances are utilized
In anaerobic respiration :
1. glycolysis does not take place
2. water molecule is split
3. oxygen acts as a final electron acceptor
4. ethyl alcohol is the common end product
Option 4 – ethyl alcohol is the common end product
Oxidative phosphorylation is the formation of :
1. ADP during aerobic respiration
2. NADP during anaerobic respiration
3. ATP during aerobic respiration
4. ATP during presence of sun light
Option 3 – ATP during aerobic respiration
Conversion of glucose to pyruvic acid yields a net gain of :
1.2 molecules of ATP
2. 36 molecules of ATP
3. 4 molecules of ATP
4. 38 molecules of ATP
Option 1 – 2 molecules of ATP
Maximum rate of respiration takes place :
1. 10°C -25°C
2.30°C -40°C
3. 60°C-100°C
4. more than 100°C
Option 2 – 30°C -40°C
Respiration differs from combustion in :
1. release of heat all at once
2. release of heat at several stages
3. initial burning of the substance
4. initial supply of oxygen
Option 2 – release of heat at several stages
In one of the following is observed only aerobic respiration :
1. muscles
2. yeast
3. tetanus bacteria
4. germinating seeds
Option 4 – germinating seeds
For the oxidation, carbohydrates should be in the form of :
1. starch
2. cellulose
3. glucose
4. fats
Option 3 – glucose
Cellular respiration takes place in the
1. cytoplasm
2. nucleus
3. chloroplast
4. mitochondria
Option 4 – mitochondria
Respiration takes place in presence of :
1. light
2. chlorophyll
3. optimum temperature
4. moisture
Option 3 – optimum temperature
Single celled organisms take in oxygen from:
1. air
2. soil
3. water
4. both air and water
Option 3 – water
Terrestrial animals take in oxygen from :
1. pond
2. river
3. air
4. sea
Option 3 – air
Respiratory organs in cockroach are :
1. blood vessels
2. mucous glands
3. gills
4. trachea
Option 4 – trachea
Respiration in amoeba occurs by :
1. transpiration
2. osmosis
3. diffusion
4. inhalation
Option 3 – diffusion
Cutaneous respiration occurs in :
1. cockroach
2. salamander
3. crab
4. parrot
Option 2 – salamander
Skin has no respiratory role in :
1. earthworm
2. lizard
3. frog
4. salamander
Option 2 – lizard
Coelomic fluid in earthworm comes out through :
1. mouth
2. dorsal pores
3. pulmonary vein
4. anus
Option 2 – dorsal pores
Amphibious animal
1. leech
2. earthworm
3. frog
4. cockroach
Option 3 – frog
Tracheae are found in :
1. megascolex
2. bony fish
3. salamander
4. butterfly
Option 4 – butterfly
In cockroach, the tracheal system opens to out side through :
1. anus
2. mouth
3. dorsal pores
4. stigmata
Option 4 – stigmata
The energy released in respiration is obtained from
1. Synthesis of carbohydrates
2. Cellular functions
3. Oxidation of glucose
4. Synthesis of proteins
Option 3 – Oxidation of glucose
The energy utilised in photosynthesis is obtained from
1. Sunlight
2. Oxidation of glucose
3. Breakdown of proteins
4. Breakdown of glucose
Option 1 – Sunlight
Oxidative phosphorylation occurs in
1. Chloroplast
2. Mitochondria
3. Cytoplasm
4. Nucleus
Option 2 – Mitochondria
Photophosphorylation occurs in
1. Mitochondria
2. Cytoplasm
3. Chloroplast
4. Nucleus
Option 3 – Chloroplast
Synthesis of new molecules in the cell requires the following energy
1. Mechanical
2. Electrical
3. ATP
4. Heat
Option 3 – ATP
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