The human body needs food, water and oxygen to survive. Which one is not needed for the human body to survive? A. Sunlight B. Food C. Water D. Oxygen 相关知识点: 试题来源: 解析 A。解析:人体生存需要食物、水和氧气,不需要阳光。
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Although oxygen is needed by all human cells, not all cells in our bodies receive similar amounts of oxygen. Oxygen levels in most organs, with a few exceptions, are lower than that of atmospheric oxygen (20–21% or 152-160 mmHg). This disparity is largely due to blood transportation ...
This case﹕tudy outlines the important stages that needed to be addressed when formulating a regression model to explain health‐related variables, such as maximum oxygen uptake, taken from the Allied Dunbar national fitness survey. Rele... Alan M. Nevill,Roger L. Holder - 《Journal of the Ro...
which ultimately influence population persistence and productivity and the livelihoods of ocean resource users10. Proactive management and adaptation approaches aimed at mitigating impacts of climate-induced resource declines are therefore critically needed11,12, but are hampered by our inability to forecast...
(2019) speak to these potentially neuroprotective mechanisms providing much-needed human insight into the redox-regulation of 'cerebral O2-sensing'. By combining paired sampling of arterial and jugular venous blood to assess trans-cerebral metabolic exchange with regional assessment of CBF, the authors...
Oxygen is a very important nutrient in the body that is used in aerobic respiration. It acts as the final electron acceptor in the electron transport chain. In the absence of oxygen, electrons would become backed up in the electron chain and the process would no...
Wastewater regulations set a maximum limit for each pollutant. This step determines the amount of uncontaminated water needed to dilute a water discharge to meet the limits. For example, if the legal limit for COD is 50 mg/L then the factor is 1/50 = 0.02, while for a contaminant with ...
Why is dissolved oxygen important for marine organisms? Why do all organisms require nitrogen? Why does phytoplankton need sunlight? Explain how H2O has 2 oxygen. Why can the human eye only see visible light? Why is a ventilation system needed in a multicellular organism?
How does the effect of PO_2 on hemoglobin saturation relate to oxygen uptake and release in the body? Most of the oxygen entering the blood is transported: A) bound to plasma proteins in the plasma. B) bound to hemoglobin in red blood cell...