Respiratory System

The incorrect statement is Living beings inhale metals during respiration.

• Living beings inhale oxygen (and other gases present in the air) during respiration, not metals.
• Metals are solid elements, not gases that can be inhaled for respiratory purposes.

The biotechnological process accomplished by yeast, some types of bacteria, or other microorganisms to convert sugar into ethyl alcohol and carbon dioxide is Alcoholic fermentation.

• This process is widely used in the production of alcoholic beverages and in baking.

In human muscle cells, the breakdown of glucose in the absence of oxygen (anaerobic respiration) creates Lactic acid.

• This occurs during intense exercise when oxygen supply is insufficient to meet energy demands, leading to muscle fatigue and soreness.

The chamber of the human heart that receives abundant oxygenated blood from the lungs is the Left atrium.

• Oxygenated blood returns from the lungs via the pulmonary veins and enters the left atrium before being pumped into the left ventricle and then to the rest of the body.

The part of the human respiratory system that provides space for the exchange of gases is the  Alveoli.

• These microscopic air sacs at the end of the bronchioles are surrounded by capillaries, facilitating the efficient diffusion of oxygen into the blood and carbon dioxide out of the blood.

The three-carbon molecule produced during the process of respiration (specifically glycolysis) is called Pyruvate.

• Glucose, a six-carbon sugar, is broken down into two molecules of pyruvate during glycolysis, which is the first step of both aerobic and anaerobic respiration.

 Hypoxia is a condition in which tissues in the body fail to receive an adequate supply of oxygen.

• This can result from various factors, including low oxygen in the air, problems with lung function, or issues with blood circulation.

The Larynx in our body is a cartilaginous box which helps in sound production.

• Also known as the voice box, the larynx contains the vocal cords which vibrate as air passes over them, producing sound.

The Right ventricle receives blood from the right atrium and pumps it to the lungs, where it is loaded with oxygen.

• Deoxygenated blood from the body enters the right atrium, then moves to the right ventricle, which then pumps it to the pulmonary artery leading to the lungs.

• The chemical reaction transfers energy from glucose to the cell.
• Anaerobic respiration produces lactic acid, rather than Carbon dioxide and water.
• Hence, the respiration carried out in the absence of oxygen is called anaerobic respiration.