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 Biology Questions

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Q:

Islets of Langerhans are present in

A) Kidney B) Liver
C) Pancreas D) Trachea
 
Answer & Explanation Answer: C) Pancreas

Explanation:
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Q:

The mode of nutrition in which particulate food is devoured is 

A) holozoic B) holophytic
C) saprophytic D) parasitic
 
Answer & Explanation Answer: A) holozoic

Explanation:

The feeding mechanism is of several types.If it is entirely plant-like (photosynthesis), it is called holophytic. It is entirely (holo) animal-like(zoic),that is devouring alreadyexisting food, it is called holozoic

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Q:

A true species in mauritius failed to reproduce because of the extinction of a fruit eating bird. Which one of the following was that bird?

A) Dove B) Dodo
C) Condor D) Skua
 
Answer & Explanation Answer: B) Dodo

Explanation:
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Q:

Which bacteria cause the greatest harm in the food industry?

A) Recycling B) Digestive
C) Fermenting D) Pathogenic
 
Answer & Explanation Answer: D) Pathogenic

Explanation:

Pathogenic bacteria cause the greatest harm in the food industry.

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Q:

What is a direct result of aerobic respiration?

A) The enzymes for anaerobic respiration are produced and stored in lysosomes B) Alcohol is produced by yeast and bacteria
C) The potential energy of glucose is transferred to ATP molecules D) Lactic acid is produced in muscle tissue
 
Answer & Explanation Answer: C) The potential energy of glucose is transferred to ATP molecules

Explanation:

Aerobic respiration is the reaction takes place in presence of oxygen which quite opposite to anerobic. The direct result of aerobic repiration is ATP molecules from breakdown of glucose molecules.

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Q:

Which one of the following strongly threatens biodiversity?

A) Eragile ecosystems such as mangroves and wetlands B) Inaccessible habitates in the Himalayas
C) Desstruction of natural habitates and regetation and Jhum cultivation D) Creation of biosphere reserves
 
Answer & Explanation Answer: C) Desstruction of natural habitates and regetation and Jhum cultivation

Explanation:
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Q:

Which organ filters blood in human body?

A) Lungs B) Heart
C) Liver D) Kidneys
 
Answer & Explanation Answer: D) Kidneys

Explanation:

The organ which filters blood in human body are kidneys.

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Q:

In recombinant DNA methods, the term vector can refer to

A) the sticky end of a DNA fragment B) a plasmid used to transfer DNA into a living cell
C) a DNA probe used to identify a particular gene D) the enzyme that cuts DNA into restriction fragments
 
Answer & Explanation Answer: B) a plasmid used to transfer DNA into a living cell

Explanation:

The term 'Vector' in recombinant DNA methods, refers to a plasmid or other agent used to transfer DNA into a living cell.

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