Biology Questions

Q:

Plants grow in size because of 

A) addition of cells B) increase in size of cells
C) enlargement of cells D) elongation of cells
 
Answer & Explanation Answer: A) addition of cells

Explanation:

Plants grow in size both in height and in girth. Enlargement of cells already present cannnot contribute much to the growth. Only addition of more and more cells could increase the size of the plant considerably.

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Q:

Self pollination will lead to

A) Inbreeding B) Over breeding
C) Outbreeding D) Rare breeding
 
Answer & Explanation Answer: A) Inbreeding

Explanation:

Self pollination occurs in the flowers when the pollen grains of the flower falls on the stigma of the same due to wind or insects like moths and bees. This lead to the inbreeding.

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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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Q:

Spongy, porous bone tissue is also called

A) Compact bone B) Bone fissure
C) Yellow bone marrow D) Cancellous bone
 
Answer & Explanation Answer: D) Cancellous bone

Explanation:

Spongy, porous bone tissue is also called cancellous bone.

 

Cancellous bone is found in bones that aren't generally under significant stress like in the shoulder blades, ribs, parts of the skull, and at the ends of long bones.

 

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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:

How many Enzymes are there in the Human Body?

Answer

There are nearly about 75000 enzymes of 3 classes are there in the human body. They are :


1. Metabolic Enzymes - Enzymes that help to run our Bodies


2. Digestive Enzymes - Enzymes that help in digesting Food


3. Food Enzymes - Enzymes from raw foods that start our Food digestion.

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Q:

Hypnosis is sometimes used to treat anxiety disorders.

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

Explanation:

Hypnosis is a state of human consciousness involving focused attention, reduced peripheral awareness, and an enhanced capacity to respond to suggestion.

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Q:

Select the correct statement about the ureters.

A) The ureter is innervated by parasympathetic nerve endings only. B) Ureters contain sphincters at the entrance to the bladder to prevent the backflow of urine.
C) The epithelium is stratified squamous like the skin, which allows a great deal of stretch. D) The ureters are capable of peristalsis like that of the gastrointestinal tract.
 
Answer & Explanation Answer: D) The ureters are capable of peristalsis like that of the gastrointestinal tract.

Explanation:
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