Which of the following statements is/are not correct for single cell protein (SCP)?
(i) The biomass is obtained from unicellular microorganisms only.
(ii) It provides a protein rich supplement.
(iii) They can be grown easily on materials like waste water from potato processing plants, straw, manure, sewage, etc.
(iv) It helps to minimise environmental pollution.
(v) SCP has to be processed before use.

Which of the following statement is/are not correct for single cell protein (SCP)? i) The biomass is obtained rom unicellular microorganism only. ii) It protein rich supplement iii) SCP can be produced by using bacteria and algae but not fungi. iv) It helps to minimise environmental pollution. v) SCP has to be processed before use.

Mark true false the following statements. (i) The shift from grain to meat creates more demand for cereals (ii) Spirulina can be grown easily on meterials like waste water from potato processing plants straw molasses etc. to produce large quantities and can serve as food rich in liquid and minerals.

Mark true false the following statements. (i) The shift from grain to meat creates more demand for cereals (ii) Spirulina can be grown easily on meterials like waste water from potato processing plants straw molasses etc. to produce large quantities and can serve as food rich in liquid and minerals.

Which of the following statements is/are incorrect about the electrical synapse ? (i)At electrical synapses, the membranes of pre and post synaptic neurons are in very close proximity. (ii)Electricity current can flow directly from one neuron into the other across the synapses. (iii)Transmission of an inpulse across electrical synapses is very similar to impulse conduction along single axon. (iv)Electrical synapses pass electrical signal between cells with the use of Ach. (v)Electrical synapses are fast. (vi)Electrical synapses are rare in our system.

Which of the following statements are correct regarding the organelle, lysosome ? I. It contains enzymes mostly active in acidic pH. II. It is known as the suicidal bag . III. These organelles are directly derived from the endoplasmic reticulum . IV. It contains water , sap, excretory product and other materials not useful for the cell.

Which of the following statements regarding eutrophication are correct ? (i) Eutrophication is the natural ageing of a lake by nutrient enrichment of its water. (ii) Pollutants from human activities like effluents from the industries and homes can radically accelerate the aging process of a lake. This phenomenon is called as cultural or accelerated eutrophication. (iii) The plant nutrients responsible for eutrophication are nitrates and phosphates. (iv) These phosphates and nitrates accelerate the growth of algae, which utilise oxygen and may deoxygenate the water to kill the fish and other aquatic animals.

Which of the following statements regarding eutrophication are correct ? (i) Eutrophication is the natural ageing of a lake by nutrient enrichment of its water. (ii) Pollutants from human activities like effluents from the industries and homes can radically accelerate the aging process of a lake. This phenomenon is called as cultural or accelerated eutrophication. (iii) The plant nutrients responsible for eutrophication are nitrates and phosphates. (iv) These phosphates and nitrates accelerate the growth of algae, which utilise oxygen and may deoxygenate the water to kill the fish and other aquatic animals.