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Respiration (physiology): Quiz


Question 1: Gas transport, movement of gases within the pulmonary capillaries through the circulation to the peripheral capillaries in the organs, and then a movement of gases back to the ________ along the same circulatory route.
LungRespiratory systemImmune systemDigestion

Question 2: Peripheral gas exchange, exchange of gases between the tissue capillaries and the tissues or organs, impacting the cells composing these and ________ within the cells.
Pyruvate dehydrogenase complexSuccinate dehydrogenaseMitochondrionMitochondrial DNA

Question 3: In contrast, complex multicellular animals such as ________ have a much greater distance between the environment and their innermost cells, thus, a respiratory system is needed for effective gas exchange.
MindHomoHumanHuman evolution

Question 4:
In physiology, respiration (many people mistake this with ________) is defined as the transport of oxygen from the outside air to the cells within tissues, and the transport of carbon dioxide in the opposite direction.
Hypoxia (medical)Respiratory systemBreathingHemoglobin

Question 5: In ________ organisms, simple diffusion is sufficient for gas exchange: every cell is constantly bathed in the external environment, with only a short distance for gases to flow across.

Question 6: This is in contrast to the biochemical definition of respiration, which refers to cellular respiration: the metabolic process by which an organism obtains energy by reacting oxygen with glucose to give water, ________ and ATP (energy).
Carbon dioxideCarbon sinkCarbon cycleGreenhouse gas

Question 7: In air-breathing ________ such as humans, respiration of oxygen includes four stages:

Question 8: The respiratory system works in concert with a ________ to carry gases to and from the tissues.
HeartCirculatory systemMyocardial infarctionFetal circulation


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