Causes of Pollution: Biology MCQ (Multiple Choice Questions) PDF - 298

MCQ 1486: Pollutants from natural cause can

1. avoided if proper precautions are taken
2. not avoided no matter what precautions are taken
3. recycled
4. stored

MCQ 1487: The enzyme, Papain is found in

1. pawpaw
2. proteases
3. pepsin
4. pancreatic amylase

MCQ 1488: Water molecule (H₂O) is split into hydrogen (H₂) and oxygen (O₂) when

1. larynx is lowered, glottis is open
2. larynx is lowered and the windpipe is opened
3. larynx is raised and epiglottis blocks glottis
4. larynx is raised and pharynx is shut

MCQ 1489: Fats acts as a solvent for

1. protoplasm
2. fat-soluble vitamins
3. insulating materials
4. mineral ions (Ca⁺², Na⁺, K⁺, Mg⁺²)

MCQ 1490: Gland referred to as "Master gland" is

1. Pituitary gland
2. Adrenal gland
3. thyroid gland
4. islets of Langerhans