AMC MCQ PRACTICE TEST
Which of the following mammalian cells is unable to aerobically metabolize glucose to carbon dioxide?
Red blood cells are not capable of metabolizing glucose to carbon dioxide aerobically. They contain hemoglobin pigment.
True or False: Respiration is a physical process and depends on the principle of diffusion.
Respiration depends partly on the principle of diffusion and facilitated diffusion. Diffusion is the flow of substance from a higher concentration to a lower concentration region.
True or False: A person can expel all the air from the lungs.
A person cannot expel all the air from the lungs. A small amount of air will be present in the lungs.
The larger part of carbon dioxide created by the body is transported to lungs _______
The majority of carbon dioxide produced by the body is transported to the lungs in the form of bicarbonates. It is then expelled out from the lungs.
The diaphragm _______ during inspiration.
The process of breathing is divided into inspiration and expiration. The process of inhalation is called inspiration. During this process, the diaphragm contacts and the air gets filled into the lungs.
_________ is controlled respiration.
Respiration is controlled by Medulla oblongata. The medulla oblongata is located in the brainstem. It also controls circulation.
Which of the following Produces greatest ATP?
Oxidative Phosphorylation is a metabolic pathway in which cells use an enzyme to oxides nutrients. it releases energy to produce ATP. It takes place in mitochondria
The Krebs cycle produces which of the following?
The end products of the Krebs cycle consist of 6 NADH, 2 FADH, 4 carbon dioxide, and 2 ATPs.
How much CO2 has expired?
During respiration, CO2 is exhaled out from the body. 32% of CO2 is expired out.
____________ are the carriers of oxygen.
During respiration, the oxygen is carried by erythrocytes. It is also known as RBC’s.
The fat RQ is ____________
RQ of fat is less than one. Fats require extra oxygen for the formation of H2O. It is around 0.7. For carbohydrate, RQ is one.
RQ stands for
RQ is the respiration quotient. It is a dimensionless number. RQ is the ratio of carbon dioxide produced by the body to oxygen consumed by the body.
Hemoglobin cannot transport carbon dioxide.
Hemoglobin carries some of the body’s respiratory carbon dioxide as carbaminohemoglobin, in which CO2 is bound to the globin protein.
The maximum expiration of the lungs after deep inspiration is referred to as ________
Vital capacity is the maximum amount of air a person can expel from the lungs after a maximum inhalation. A person’s vital capacity can be measured by a wet or regular spirometer.
The toxicity of oxygen is related to _________
The result of breathing increased partial pressure of oxygen is hyperoxia an excess of oxygen in body tissues. Oxygen toxicity is a concern for underwater divers.
When CO2 levels in the blood increase, breathing becomes ____________
When CO2 concentration in blood increased breathing becomes faster and deeper. This happens due to the increase in carbon dioxide and breathing rate becomes faster.
In the lungs, the partial pressure of oxygen is ______________.
In a mixture of gases partial pressure is a pressure of that gas if it alone occupied the entire volume of the original mixture at the same temperature. The partial pressure of oxygen in the lungs is 100 mm Hg.
In respiratory metabolism, RQ equals 0.6, which means _________
RQ is the respiratory quotient. If RQ is 0.6 then Oxidation of respiratory substrate consumed more O2 than CO2 produced.
On the inner surface of bronchioles and fallopian tubules, epithelial tissues are ________.
Ciliated epithelial tissues are present on the inner surface of bronchioles and fallopian tubes. These hairs called cilia move back and forth to help move particles out of the body. They contain goblet cells that secrete mucously.
CO2 amount in expired air is _________.
The average human excels about2.3 pounds of carbon dioxide on an average day. Nearly 4% of carbon dioxide is present in exhaled air.
Bronchioles are the finest branches of the bronchial intercom.
Bronchioles are the minute branches into which a bronchus divides. It helps in respiration.
Which of the following is a condition in which cell division occurs uncontrollably and results in a tumor?
Lung cancer is usually seen in people who smoke. There are 2 types of lung cancer. Non-small cell and small-cell lung cancer.
In heavy smokers, the alveoli become enlarged and damaged due to a reduction in surface area. This is referred to as ___________.
in Emphysema alveoli at the end of the airways in the lungs are damaged. The sacs become larger and move less oxygen into the blood. Emphysema can be due to genetics also.
Which of the following does not belong to the respiratory system's conducting portion?
Respiratory system is divided into the conducting zone and the respiration zone. Alveoli belong to the respiration zone and not the conducting zone.
The humburger shift is also known as ___________
Hamburger shift is a process which offers in a cardiovascular system and refers to the exchange of bicarbonate and chloride across the membrane of RBC. It is also known as the chloride shift.