Biology MCQs

1496 MCQs  — Everyday Science MCQs  (Page 22 of 150)

Attempt Biology Quiz
_____________ supported theory of special creation?
A. Linnaeus
B. Aristotle
C. Mendel
D. Lamarck
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Percentage of proteins in cell membrane is____________?
A. 20-40%
B. 40-50%
C. 60-80%
D. 80-100%
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Which of the following is most constant abiotic component of ecosystem___________?
A. Air
B. Water
C. Land
D. Gravity
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Ecosystem not found in Pakistan is_____________?
A. Tropical rain forest
B. Temperate deciduous forest
C. GraSSLand
D. Tundra
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Movement of the material across the cell membrane which does not requiring expenditure of metabolic energy is called__________?
A. Active transport
B. Passive transport
C. Co-transport
D. Counter transport
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The productivity of aquatic ecosystem is basically determined by light and____________?
A. Co2
B. O2
C. Water
D. Nutrients
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The first layer of cell wall which is formed is___________?
A. Primary wall
B. Secondary wall
C. Middle lamella
D. All of these
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Annual rainfall in grassland is about_____________?
A. More than 2500 mm
B. 750-1500 mm
C. 250-750 mm
D. Less than 250 mm
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Conversion of ammonia or ammonium ion into nitrites during nitrogen cycle occurs due_____________?
A. Rhizobium
B. Nitrosomonas
C. Nitrobacter
D. Pseudomonas
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Cellulose is the major component of__________?
A. Primary wall
B. Secondary wall
C. Middle lamella
D. All of the above
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Word of the Day
12 Jul
Obdurate
stubbornly refusing to change one’s opinion or course of action.
ضدی، بدکار، سنگدلی

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