Biology Questions

Q:

Which of the following is true of enzymes?

A) Enzymes lowers the activation energy for the chemical reaction B) Enzymes speed up the rate of a chemical reaction
C) Both A & B D) Neither A nor B
 
Answer & Explanation Answer: C) Both A & B

Explanation:

Enzymes are macromolecular biological catalysts. Enzymes accelerate chemical reactions. The molecules upon which enzymes may act are called substrates and the enzyme converts the substrates into different molecules known as products.

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Q:

Limbs of frog, lizard, bird and human are example of ______ organs.

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

Explanation:
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Q:

The blind spot of the eye is where the optic nerve leaves the eyeball.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Everyone of us have a blind spot which is a small portion within the visual field of every eye where the optic nerve and blood vessels leave the eyeball. Optic nerve is connected to brain ehich carries images of what we see.


the_blind_spot_of_the_eye_is_where1536397433.jpg image

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Q:

In which body cavities are the lungs located

A) Pelvic cavity B) Thoracic cavity
C) Abdominal cavity D) Body cavity
 
Answer & Explanation Answer: B) Thoracic cavity

Explanation:
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Q:

Which occurs during transcription?

A) Proteins are produced B) Ribosomes produces
C) DNA information is copied to RNA D) All of the above
 
Answer & Explanation Answer: C) DNA information is copied to RNA

Explanation:

Transcription is the process of copying the genetic material or information that is the DNA to messenger RNA (mRNA.

 

transcription_translation1531736868.jpg image

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Q:

All enzymes are proteins.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

All enzymes are proteins but all proteins are not enzymes since, enzymes are subset of proteins.

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Q:

The process of copying dna is called

A) Copying B) Replication
C) Repulsion D) Replying
 
Answer & Explanation Answer: B) Replication

Explanation:

The process of copying dna is called Replication.

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Q:

The animals in which the body cavity is absent are known as __________.

A) Coelomates B) Wild
C) Pseudocoelomates D) Acoelomates
 
Answer & Explanation Answer: D) Acoelomates

Explanation:
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