Read the following statements.
X: Amount of carbon dioxide produced per molecule of glucose during aerobic respiration.
Y: Amount of carbon dioxide produced per molecule of glucose during fermentation by yeast.
Which of the following is true about X and Y?
Important Questions on Life Processes
There are various muscles present in the human digestive system known as sphincters. Two examples of those are given below:
1. Pyloric sphincter- at the junction of the stomach and small intestine.
2. Anal sphincter- at the anus.
Give ONE most likely consequence of malfunctioning of each of these sphincters?
The diagram shows a vertical section through the heart.
What are the functions of the numbered blood vessels?
The diagram represents a part of the human circulatory system. Where is the blood pressure highest?
The diagram shows part of the human gas exchange system.
What are W, X, Y and Z?
| Bronchus | Bronchiole | Larynx | Trachea | |
| (a) | W | X | Z | Y |
| (b) | X | Z | Y | W |
| (c) | Y | W | X | Z |
| (d) | Z | Y | W | X |
The below diagram shows the respiratory system of human beings.
Identify the correct function of the part labelled as 'X'.
