Complete the equation. Glucose → _____ + Carbon dioxide + Energy

In the given reaction, the glucose is broken down in the absence of oxygen. It is known as anaerobic respiration. The products of anaerobic respiration are ethyl alcohol, carbon dioxide and a small amount of energy. The complete reaction will be: Glucose → Ethyl alcohol + Carbon dioxide + Energy

Complete the equation. Glucose + _____ → Carbon dioxide + Water + Energy

In th given equation, carbon dioxide, water, and energy are produced from the molecule of glucose. It is a type of respiration process. Since water is produced in the reaction, it can be concluded that glucose must have broken down in the presence of oxygen. It is known as aerobic respiration. The complete reaction will be: Glucose + Oxygen → Carbon dioxide + Water + Energy

Science Quiz/Puzzle Down 1. Respiratory organs in fishes. 2. Bony structures that help in breathing. 3. Apertures for gas exchange on the body of insects. 4. The process of breathing in air. 5. Minute apertures on the leaves through which air enters the hollow intercellular spaces. Across 2. The process of release of energy stored in food. 6. The unicellular organism that survives by anaerobic respiration. 7. Organs of respiration in insects. 8. Windpipe that connects the lungs with nasal passages. 9. One complete cycle of taking air in and pushing it out.

Down 1. Fishes are aquatic animals and they do not have lungs for breathing. Instead, they obtain oxygen for respiration with the help of their gills. 2. During the process of breathing, the rib case is lifted upwards and outwards by the intercostal muscles. It helps to increase the volume of the chest cavity so that the lungs can expand. 3. Insects breathe with the help of tube-like structures called trachea, which opens outside their body in the form of minute apertures called spiracles. 4. Breathing in humans is a process of exchanging gases between the atmosphere and the blood. The process of breathing in air is called inhalation. 5. Plants exchange gases from the atmosphere with the help of minute pores present on their leaves called stomata. Across 2. The energy stored in the food is released by the breakdown of glucose molecules. This process usually occurs in the presence of oxygen and is called respiration. 6. Respiration that occurs in the absence of oxygen is called anaerobic respiration. An example of a unicellular organism that respires anaerobically is yeast. 7. Insects exchange oxygen and carbon dioxide between their tissues and the air with the help of a system of air-filled tubes called tracheae. It opens outside the body through small pores called spiracles . 8. Windpipe branches form the bronchi that enter the lungs. The biological name for the windpipe is the trachea. It acts as an air passage between the lungs and the nasal passages. 9. One complete cycle of taking in oxygen-rich air and eliminating carbon dioxide-rich air by the lungs is known as breathing.