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 Biology Questions

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Q:

Organs having different structure and components but perform similar functions are called ______.

 

A) Analogous organs B) Homologous organs
C) Heterogeneous organs D) Homogenous organs
 
Answer & Explanation Answer: A) Analogous organs

Explanation:
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Q:

Artocarpus integra is the scientific name of ___________.

A) Guava B) Pineapple
C) Silver Oak D) Jack fruit
 
Answer & Explanation Answer: D) Jack fruit

Explanation:
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Q:

Why is RNA necessary to act as a messenger?

Answer

Why_is_RNA_necessary_to_act_as_a_messenger1548936409.jpg image


RNA acts as a messenger in between the DNA and ribosome as it transforms the genetic information from the DNA and as DNA is big and can't fit into the nuclear pores. 

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1 1849
Q:

Which of the following is a feature of leptin?

A) It acts primarily on the brain B) It is secreted by the brain and acts on fat cells
C) It is an enzyme D) It is usually deficient in thin people
 
Answer & Explanation Answer: B) It is secreted by the brain and acts on fat cells

Explanation:
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1 1846
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:

How many Nucleotides make up a Codon?

A) 3 B) 4
C) 5 D) 6
 
Answer & Explanation Answer: A) 3

Explanation:

3 Nucleotides make up a Codon. 

The nucleotide triplet that encodes an amino acid is called a codon.

Each group of three nucleotides encodes one amino acid.

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6 1835
Q:

What do genes code for?

A) Ptoteins B) DNA
C) RNA D) None
 
Answer & Explanation Answer: A) Ptoteins

Explanation:

The genome of an organism is inscribed in DNA, or in some viruses RNA. The portion of the genome that codes for a protein or an RNA is referred to as a gene. Those genes that code for proteins are composed of tri-nucleotide units called codons, each coding for a single amino acid.

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Q:

Every ecosystem must have

A) Autotrophs B) Heterotrophs
C) Both A & B D) photosynthesizers
 
Answer & Explanation Answer: A) Autotrophs

Explanation:

Every ecosystem must have Autotrophs.

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