Biology Questions

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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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:

Gluconeogenesis is a term that describes the synthesis of

Answer

Gluconeogenesis is a metabolic pathway that leads to the synthesis of glucose from pyruvate and other non-carbohydrate precursors, even in non-photosynthetic organisms.


 


It occurs in all microorganisms, fungi, plants and animals, and the reactions are essentially the same, leading to the synthesis of one glucose molecule from two pyruvate molecules. Therefore, it is in essence glycolysis in reverse, which instead goes from glucose to pyruvate, and shares seven enzymes with it.

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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:

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:

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 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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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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