Biology Questions

Q:

Which type of epithelial tissue allows transportation of substances through a selective permeable surface in the lining of food vessels or lung alveoli?

 

A) Simple squamous epithelium B) Stratified squamous epithelium
C) Ciliated columnar epithelium D) Cuboidal epithelium
 
Answer & Explanation Answer: A) Simple squamous epithelium

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Q:

The tendon is made up of

A) inelastic connective tissue fibres B) inelastic and elastic connective tissue fibres
C) only collagen fibres D) elastic connective tissue fibres
 
Answer & Explanation Answer: C) only collagen fibres

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Q:

Deficiency of which vitamin causes night blindness?

A) Vitamin K B) Vitamin C
C) Vitamin B1 D) Vitamin A
 
Answer & Explanation Answer: D) Vitamin A

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Q:

Which leukocyte is responsible for antibody production?

A) Monocyte B) T-Cells
C) B Lymphocyte D) Basophil
 
Answer & Explanation Answer: C) B Lymphocyte

Explanation:

Leukocyte, commonly known as a white blood cell (WBC), is a major component in protecting the body against invading microorganisms and body cells with mutated DNA, and they clean up debris. 

B Lymphocyte also called as B-Cells or plasma cells produces the antibodies or immunoglobulins that bind to specific foreign or abnormal components of plasma membranes. This is also referred to as humoral (body fluid) immunity.

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Q:

Which part of the human reproductive system helps the embryo get its nutrition from the mother's blood?

A) Placenta B) Fallopian tube
C) Uterus D) Cervix
 
Answer & Explanation Answer: A) Placenta

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Q:

What is the name of the point at which the chromatids are attached in a chromosome?

A) Centrosome B) Centromere
C) Nucleosome D) Gene
 
Answer & Explanation Answer: B) Centromere

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Q:

Involuntary actions in human beings such as blood pressure, salivation and vomiting are controlled by the

A) Spinal cord B) Hypothalamus
C) Pons D) Medulla
 
Answer & Explanation Answer: D) Medulla

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Q:

Which of the following represents the pair of sex chromosomes in women?

A) XY B) XX
C) YY D) None of these
 
Answer & Explanation Answer: B) XX

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