The main function of the alveoli in the lungs is to:

Which of the following gases is used for welding purposes due to its high flame temperature?

Which of the following elements is essential for the synthesis of DNA and RNA?

The scientific name for the common cold-causing virus family is:

The disease commonly known as 'the silent killer' due to lack of symptoms is:

Which of the following organs is responsible for producing red blood cells in adults?

Which of the following is used in the treatment of bacterial infections?

The energy obtained from the breakdown of glucose in cells is stored in the form of:

The primary function of the lymphatic system is to:

Which of the following is the chemical name for baking soda?

Which of the following is the chief component of natural rubber?