Which of the following choices correctly describes the composition of the cell membrane?

The damage to ozone layer is caused by?

A. Oxygen B. Nitrogen oxide C. Chlorofluorocarbons D. sulphur dioxide Correct Answer: Option C – Chlorofluorocarbons Explanation Ozone sits in the upper atmosphere and absorbs ultraviolet radiaton, another type of solar energy that’s harmful to humans,...
Which of the following choices correctly describes the composition of the cell membrane?

Name the blood cells in which nucleus is absent?

A. Lymphocytes B. Blood Platelets C. Monocytes D. Eosinophil Correct Answer: Option B – Blood Platelets Explanation Like red cells, platelets (thrombocytes) have no nucleus. However, unlike red cells that originate in the marrow as nucleated cells and lose their...

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