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Q:

What is the transplantation of graft between genetically identical individuals ?

A) Autograft B) Isograft
C) Allograft D) Xenograft
 
Answer & Explanation Answer: B) Isograft

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Q:

Medulla oblongata is a part of which of the following?

A) Heart B) Brain
C) Lungs D) Stomach
 
Answer & Explanation Answer: B) Brain

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Q:

Which of the following is a structural and functional unit of kidneys?

A) Renette Cells B) Flame Cells
C) Nephrites D) Nephrons
 
Answer & Explanation Answer: D) Nephrons

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Q:

Polynucleotide chain of DNA contains

A) a nitrogenous base, deoxyribose sugar and phosphate group B) a nitrogenous base, ribose sugar and phosphate group
C) deoxyribose sugar, ribose sugar and phosphate group D) a nitrogenous base and phosphate group only
 
Answer & Explanation Answer: A) a nitrogenous base, deoxyribose sugar and phosphate group

Explanation:

The two DNA strands are called polynucleotidesbecause they are composed of simpler monomer units called nucleotides. Eachnucleotideis composed of one of four nitrogen-containingnucleobases (cytosine, guanine, adenine or thymine), a sugar called deoxyribose, and a phosphate group.

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Q:

Which part of the brain plays an important role in motor control?

A) Cerebellum B) Cerebrum
C) Medulla D) Pons
 
Answer & Explanation Answer: A) Cerebellum

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Q:

The hormone that helps plants respond to drought is

A) abscisic acid B) cytokinin
C) gibberellin D) ethylene  
 
Answer & Explanation Answer: A) abscisic acid

Explanation:

During drought, plants would be in scarcity for water. For ensuring the mineral loss of water through stomata, the plant starts to produce abscisic acid.

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Q:

Which of the following forms a base pair with thymine?

A) Adenine B) Guanine 
C) Cytosine D) Thymine
 
Answer & Explanation Answer: A) Adenine

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Q:

The primary function of RNA is

A) Photosynthesis B) Protein Synthesis
C) Replication D) Translation
 
Answer & Explanation Answer: B) Protein Synthesis

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