IGCSE Biology Paper-4: Specimen Questions with Answers 156 - 157 of 279
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Question 156
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Short Answer▾Table describes some of the structures of the human circulatory system shown in Fig.
Complete the table.
| Description | name of structure | letter on Fig. |
| heart chamber with the thickest muscular wall | Left ventricle | C |
| blood vessel that carries oxygenated blood to the heart | Pulmonary vein | S |
| blood vessel that carries oxygenated blood away from the heart | Aorta | P |
| blood vessel that carries blood away from the kidneys | Renal vein | N |
| blood vessel with the largest lumen | vena cava | L |
Explanation
| Description | name of structure | letter on Fig. |
| heart chamber with the thickest muscular wall | ||
| blood vessel that carries oxygenated blood to the heart | ||
| blood vessel that carries oxygenated blood away from the heart | ||
| blood vessel that carries blood away from the kidneys | ||
| blood vessel with the largest lumen | vena cava | N |
Question 157
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Short Answer▾Describe what happens to the liquid containing penicillin after it is collected from the fermenter
Explanation
After the formation of the product in fermenter, it undergoes through some processes before a finished product is ready for marketing. The processes include separation and purification of products which is collectively called as downstream processing.