Biology Questions

Q:

Where is the genetic information of the cell stored?

A) DNA B) Cell membrane
C) Nucleus D) None of the above
 
Answer & Explanation Answer: C) Nucleus

Explanation:

The genetic information of the cell is DNA and is stored in the nucleus of the cell.

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Q:

Bleeding of gums, falling of teeth, fragile bones and delayed wound healing occur due to the deficiency of which one of the following vitamins?

A) Vitamin C B) Vitamin K
C) Vitamin D D) Vitamin B
 
Answer & Explanation Answer: A) Vitamin C

Explanation:

Deficiency of Vitamin C causes Scurvy, Swelling of gums etc.Vitamin K causes Non-clotting of blood ,Vitamin D causes Rickets in children and Osteomalasia in adults, Vitamin B 1 causes Beriberi,B2 causes Cracking of skin,reddish eye,cracking of tongue,B3 causes Whitening of hair ,mentally retardness ,B5 causes Pallagra or 4D syndrome,B6 causes Anemia,skin disease ,B7 causes Paralysis,hair falling,B11 causes Dysentery and B12 causes Jaundice and Teroile Glutemi

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Q:

During the process of protein synthesis, each trna carries one

A) amino acid B) nucleotide
C) fatty acid D) nucleic acis
 
Answer & Explanation Answer: A) amino acid

Explanation:

During protein synthesis process, each tRNA carries one aminoacid for protein synthesis to the ribosomes.

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Q:

Which best describes a gene?

A) a segment of chromosomal DNA B) tightly coiled strands of DNA
C) different allele forms of a trait D) None of the above
 
Answer & Explanation Answer: A) a segment of chromosomal DNA

Explanation:

Gene is a hereditary unit consisting of a sequence of DNA that occupies a specific location on a chromosome and determines a particular characteristic in an organism.

In short it is a piece or segment of chromosome.

 

Genes undergo mutation when their DNA sequence changes. 

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Q:

Which statements about viruses are true?

A) HIV contains reverse transcriptase. B) A retrovirus contains RNA.
C) Both A & B D) All RNA-containing viruses are retroviruses.
 
Answer & Explanation Answer: C) Both A & B

Explanation:

The statements true about viruses are :

 

1. The capsid enters the host cell if the virus is enveloped.

2. Enveloped viruses bud from the host cell. 

3. HIV contains reverse transcriptase.

4. A retrovirus contains RNA.

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Q:

Sulphur Dioxide pollution is indicated by an excessive growth of which of the following?

A) Algal Blooms B) Lichens
C) Bryophytes D) Protozoa
 
Answer & Explanation Answer: B) Lichens

Explanation:
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Q:

Which is not a function of the cytoskeleton?

A) helps the cell move B) gives cell a shape
C) prevents chromosomes from separating D) None of the above
 
Answer & Explanation Answer: C) prevents chromosomes from separating

Explanation:

A cytoskeleton acts as a frame that gives a cell its shape, protects it to an extent, and helps with cellular motion.

 

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Q:

Study of Life in outer space is known as

A) Endobiology B) Neobiology
C) Exobiology D) Intrabiology
 
Answer & Explanation Answer: C) Exobiology

Explanation:

Study of Life in outer space or search of life external to Earth is known as Exobiology.

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