71. Which character differentiates living things from non-living organisms?
A: They live in the same ecosystem.
B: They are highly organized and complex made of one or more cells and contain genetic material
C: They are acted upon by the same environment
D: Both a and b
72. 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
73. Members of one species inhabiting the same area form:
A: Species
B: Community
C: Ecosystem
D: Population
74. The average internal temperature of the human body is:
A: 35 oC
B: 36 oC
C: 37 oC
D: 38 oC
75. On the basis of collected facts and ¬gures, a scientist formulates a factitive statement called:
A: Observation
B: Research work
C: Hypothesis
D: Inductive Reasoning
76. Which of the following is an example of molecule?
A: Chloroplast
B: A Nerve Cell
C: DNA
D: Hydrogen
77. A group of very similar interbreeding organisms constitutes?
A: Biosphere
B: Ecosystem
C: Population
D: Species
78. Cholera vaccine was prepared by:
A. Eders
B. Louis Pasteur
C. James Black
D. Linda Buck
79. What is the life span of Red Blood Cells?
A. 100 days
B. 110 days
C. 120 days
D. 130 days
80. Which group of animals has heterogametic females?
A. Rabbit
B. Cat
C. Domestic fowl
D. Earthworm
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