Biology Questions

Q:

Tubes that bifurcate from the windpipe

A) Bronchi B) pleura
C) Apex D) Adenoids
 
Answer & Explanation Answer: A) Bronchi

Explanation:

Tubes that bifurcate from the windpipe are called Bronchi.

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1 2008
Q:

Which one of the following functions is not carried out by smooth endoplasmic reticulum?

A) Transport of materials B) Synthesis of lipid
C) Synthesis of protein D) Synthesis of steroid hormone
 
Answer & Explanation Answer: C) Synthesis of protein

Explanation:

Smooth Endoplasmic Reticulumdoes not contain ribosomes on its surface for which it is regarded as smooth. So, proteins cannotbe synthesised by SER provided protein synthesis is the primary task of ribosomes.

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Filed Under: Biology
Exam Prep: Bank Exams

2 2001
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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5 2000
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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1 1998
Q:

In plants, chloroplasts are necessary for 

A) photosynthesis B) storage
C) cell movement D) respiration
 
Answer & Explanation Answer: A) photosynthesis

Explanation:

Plants are producers, which means they make their own food. Chloroplasts are organelles found in eukaryotic and plant cells that conduct photosynthesis. Chloroplasts absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food for the plant.

Plants use energy from sunlight to help make their food, but they need chloroplasts to do it.

 

Hence, in plants, chloroplasts are necessary for Photosynthesis.

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1 1997
Q:

What is the unit of heredity?

A) cell B) blood
C) gene D) All of the above
 
Answer & Explanation Answer: C) gene

Explanation:

Genes are units of heredity.

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1 1997
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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Subject: Biology
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0 1995
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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3 1991