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 Biology Questions

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Q:

Mycolog is the branch of botany in which we study about

A) Algae B) Fungi
C) Bacteria D) Virus
 
Answer & Explanation Answer: B) Fungi

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Q:

Who is known as father of medicine

A) Aristotle B) Theophrastus
C) Hippocrates D) Edward Jenner
 
Answer & Explanation Answer: C) Hippocrates

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Q:

Why are yeast cells frequently used as hosts for cloning?

A) they are eukaryotic cells B) they do not have plasmids
C) only yeast cells allow the gene to be cloned D) they easily form colonies
 
Answer & Explanation Answer: A) they are eukaryotic cells

Explanation:

If you were to produce a protein in bacterial cloning systems, you would not get the same post transcriptional and post translational modifications because the prokaryotic and eukaryotic systems work differently on the modifications.

Thus human recombinant protein genes are usually cloned in yeast cells. Also since they have a short generation time, they can be easily culture.

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Q:

Along the path of the vas deferens which glands add their secretions in the sperms?

 

I. Prostate

II. Seminal vesicles

III. Scrotum

 

A) Only I and III B) Only I and II
C) Only II and III   D) All I, II and III
 
Answer & Explanation Answer: B) Only I and II

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Q:

Which best describes a tetrad?

A) A diploid cell B) Two gametes
C) Four chromatids D) A haploid cell
 
Answer & Explanation Answer: C) Four chromatids

Explanation:

A tetrad is best described by Four chromatids. It is formed from two homologous chromosomes, each consisting of two chromatids in the first stage of meiosis called prophase1.

 

A_tetrad_is_made_up_of1562827273.jpg image

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Q:

Which of these is unique to flowering plants?

A) double fertilization B) an embryo surrounded by nutritive tissue
C) haploid gametophytes D) pollen production
 
Answer & Explanation Answer: A) double fertilization

Explanation:

In flowering plants one sperm nucleus fertilizes the egg and the other sperm nucleus fuses with two other nuclei found within the ovule, thus forming triploid endosperm.

 

Hence, double fertilization is unique to flowering plants.

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Q:

The pair of spinal nerves in main are

A) 30 B) 31
C) 32 D) 33
 
Answer & Explanation Answer: B) 31

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Q:

The type of fracture where bone is broken at several places

A) Complicated fracture B) Green stick fracture
C) Impact fracture D) Comminuted fracture
 
Answer & Explanation Answer: D) Comminuted fracture

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