Oxygen accounts for ____ % of totals human body mass?
Oxygen accounts for ____ % of totals human body mass?
A. 65%
B. 18%
C. 10%
D. 3%
Biology Mcqs
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Out of 92 naturally occurring chemical elements how many are considered as bio-elements?
Out of 92 naturally occurring chemical elements how many are considered as bio-elements?
A. 6
B. 16
C. 26
D. 15 -
__________ is essential for the formation of hemoglobin.
__________ is essential for the formation of hemoglobin.
A. Calcium
B. Iron
C. Water
D. Carbohydrates -
Blood is carried towards the heart by __________?
Blood is carried towards the heart by __________?
A. Arteries
B. Capillaries
C. Veins
D. none of these -
Sythetic insulin from pork was formed by which technique?
Sythetic insulin from pork was formed by which technique?
A. Biotechnology
B. Social biological techniques
C. Parasitology
D. Both a and c -
On wound __________ fight foreign particles, like bacteria?
On wound __________ fight foreign particles, like bacteria?
A. White Blood cells
B. Red Blood Cells
C. Platelets
D. Plasma -
The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by ?
The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by ?
A. Molecular biologists
B. Microbiologists
C. Freshwater biologists
D. Social biologist -
About __________ of the body weight of a mammal is water ?
About __________ of the body weight of a mammal is water ?
A. 60%
B. 65%
C. 70%
D. 75% -
The study of fossils is called?
The study of fossils is called?
A. Environmental Biology
B. Historical biology
C. Palaeontology
D. Social biology -
Which Vitamin is needed for the formation of a light-sensitive pigment in the retina.
Which Vitamin is needed for the formation of a light-sensitive pigment in the retina.
A. Vitamin A
B. Vitamin C
C. Vitamin D
D. B complex