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Biology general knowledge questions and answers - Page 1

1. Researches stressed that moderate exposure to sunlight did not significantly raise the risk of the most serious form of skin cancer, called

A. Caricinoma

B. Melanoma

C. Ceratonoma

D. Carcoma

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2. Only ______ of Earth’s water is fit for human consumption.

A. 3 %

B. 30 %

C. 28 %

D. 33 %

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3. Which of the following factors is mainly responsible for the rise in temperature of the atmosphere?

A. Increase in the atmospheric density

B. Increase in the usage of renewable energy

C. Increase in the amount of carbon dioxide

D. Decrease in the atmospheric humidity

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4. DNA structure was discovered by

A. Karl Land Steiner

B. Gregor Mendel

C. Watson and Crick

D. Hargobind Khorana

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5. Fresh foods and fruits contain more of

A. fats

B. vitamins

C. carbohydrates

D. proteins

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