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 Biology Questions

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Q:

Amoeba belongs to the phylum

A) Protozoa B) Annelida
C) Porifera D) Platyhelminthes
 
Answer & Explanation Answer: A) Protozoa

Explanation:
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Q:

In a nucleosome, the DNA is wrapped around

A) histone octamer B) helix
C) double helix D) None of the above
 
Answer & Explanation Answer: A) histone octamer

Explanation:

In_a_nucleosome,_the_DNA_is_wrapped_around1542780589.jpg image

In a nucleosome, the DNA is wrapped around histone octamer.

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Q:

Which statement is one component of the cell theory?

A) DNA is the basis of genetic transfer B) All living cells arise from pre-existing cells
C) All cells are composed of same organelles D) Tissues are formed from combinations of cells
 
Answer & Explanation Answer: B) All living cells arise from pre-existing cells

Explanation:

All living cells arise from pre-existing cells is one component of the cell theory.

 

The Cell Theory is one of the basic principles of biology.

 

The Cell Theory states:

1. All living organisms are composed of cells. They may be unicellular or multicellular.

2. The cell is the basic unit of life.

3. Cells arise from pre-existing cells.

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Q:

Branch of science which deal with the study of causative agent of disease is __________

A) Ecology B) Etiology
C) Eugenics D) Euthenics
 
Answer & Explanation Answer: B) Etiology

Explanation:
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Q:

Cerebro spinal fluid protects

A) Heart B) Brain
C) Liver D) Kidney
 
Answer & Explanation Answer: B) Brain

Explanation:
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Q:

Chemical Co- ordination in the body is brought out by

A) Blood B) Lymph
C) Enzymes D) Hormones
 
Answer & Explanation Answer: D) Hormones

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Q:

Genes are situated on _________

A) Chromosome B) Mitochondria
C) Plastids D) Ribosomes
 
Answer & Explanation Answer: A) Chromosome

Explanation:
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Q:

Genes contain instructions for assembling what?

A) Amino acids B) Proteins
C) Nucleotides D) All of the above
 
Answer & Explanation Answer: B) Proteins

Explanation:

Genes which are segment of DNA of a cell contains instructions for assembling proteins.

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