Biology Questions

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.


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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:

Cellulose is a major component of the

A) Pythium B) Pseudomonas
C) Xanthomonas D) Saccharomyces
 
Answer & Explanation Answer: A) Pythium

Explanation:
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Q:

Cranial bones develop

A) within fibrous membranes B) within osseous membranes
C) from cartilage models D) from a tendon
 
Answer & Explanation Answer: A) within fibrous membranes

Explanation:
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Q:

Which among the following hormone can be used as a drug to treat cardiac arrest and some other cardiac problems?

A) Epinephrine B) Insulin
C) Thyroxin D) Calcitonin
 
Answer & Explanation Answer: A) Epinephrine

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.

 

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Q:

Where does translation occur?

A) Nucleus B) Ribosomes
C) Cytoplasm D) mitochondrion
 
Answer & Explanation Answer: C) Cytoplasm

Explanation:

Right after that, the mRNA enters the cytoplasm through nuclear pores. There, it could be translated into proteins by ribosomes. This process is called translation.

 

Translation occurs in the cytoplasm whereas transcription occurs in the nucleus.

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Q:

Where does protein synthesis take place in a cell?

A) Ribosomes B) Mitochondria
C) Cytoplasm D) Nucleus
 
Answer & Explanation Answer: A) Ribosomes

Explanation:

The protein synthesis take place in a cell outside the nucleus in the structures called ribosomes. Ribosomes link amino acids together in the order specified by messenger RNA molecules.

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