Who controls the biological functions of the body ?

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Answer :

Hormones regulate the biological functions of the body
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The percentage of nitrogen retained in the body after absorption of diet represents (A) Digestibility coefficient of proteins (B) Biological value of proteins (C) Protein efficiency ratio (D) Net protein utilisation

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The gain in body weight (gm) per gm of protein ingested is known as (A) Net protein utilisation (B) Protein efficiency ratio (C) Digestibility coefficient (D) Biological value of protein

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Biological value of a protein is (A) The percentage of ingested protein/nitrogen absorbed into circulation (B) The percentage of ingested protein/nitrogen in the body (C) The percentage of ingested protein utilised for protein synthesis in the body (D) The gain in body weight (gm) per gm of protein ingested

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What are the biological troubles that molluscs face due to their soft body?

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(2) amount of oxygen used for biochemical oxidation Explanation: Biochemical oxygen demand or B.O.D. is the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present in a given water sample at certain temperature over a specific time period. The term also refers to a chemical procedure for determining this amount. This is not a precise quantitative test, although it is widely used as an indication of the organic quality of water.

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Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these (a) help in regulating metabolism (b) are exclusively synthesized in the body of a living organism as at present (c) are conjugated proteins (d) enhance oxidative metabolism.

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Pick out the wrong statement. (A) Biological oxygen demand (B.O.D.) value of a sewerage sample is always lower than its chemical oxygen demand (C.O.D.) value (B) Environmental pollution by NOx emission is much higher by four stroke petrol engines as compared to the two stroke engines (C) Temperature in stratosphere rises with increasing altitude (D) The characteristic of a green house body is that it allows the long wavelength incoming solar radiation to come in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere

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Many xenobiotics are oxidized by cytochrome P450 in order to (A) increase their biological activity (B) increase their disposition in lipophilic compartments of the body (C) increase their aqueous solubility (D) all of the above

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Last Answer : (D) all of the above

10. High biological oxygen demand in a water body means ________ a. Water is not polluted b. Water is polluted c. Waterbody contains lots of lifeforms d. None of the above

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Eutrophication of a water body enhances (1) Organic matter production (2) Biological oxygen demand (3) Both (1) and (2) (4) Neither (1) nor (2)

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Last Answer :  Both (1) and (2)