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Q:

Which of the following statements about vitamins is true?

A) Vitamins have a small caloric value B) Vitamins can serve as an energy supply for the body if certain criteria are met
C) Like protein and some minerals, vitamins contribute to the structure of the body D) Vitamins are indispensable for the maintenance of optimal health
 
Answer & Explanation Answer: D) Vitamins are indispensable for the maintenance of optimal health

Explanation:

Vitamins are indispensable for the maintenance of optimal health is the only statement that is true about vitamins.

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Q:

A few organisms can tolerate and thrive in a narrow range of temperatures. Such organisms are called ___________.

A) Osmotic B) Eurythermal
C) Stenothermal D) Hydrothermal
 
Answer & Explanation Answer: C) Stenothermal

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Q:

Octopus belongs to the phylum

A) Mollusca B) Cnidaria
C) Echinodermata D) Chordata
 
Answer & Explanation Answer: A) Mollusca

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Q:

The later (second) formed primary xylem elements are called _____________.

A) Protoxylem B) Metaxylem
C) Xylem parenchyma D) Xylem fibres
 
Answer & Explanation Answer: B) Metaxylem

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Q:

The somatosensory receptors in human beings detect ______.

A) taste B) smell
C) touch D) hear
 
Answer & Explanation Answer: C) touch

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Q:

Sphygmomanometer measures the blood pressure in the

A) Veins B) Arteries
C) Eyes D) Synovial
 
Answer & Explanation Answer: B) Arteries

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Q:

Honey that has high concentration of sugar does not decay because

A) Bacteria cannot survive in an active state as it is totally deprived of oxygen B) It contains natural antioxidant that prevents bacterial attack
C) Bacteria cannot survive in an active state in a solution of high osmotic strength as water is drawn out D) None of these
 
Answer & Explanation Answer: C) Bacteria cannot survive in an active state in a solution of high osmotic strength as water is drawn out

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1 1851
Q:

Nodes of Ranvier are microscopic gaps found within:

A) osteoblasts B) gland cells
C) chondroblasts D) myelinated axons
 
Answer & Explanation Answer: D) myelinated axons

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