Answer:
Correct answer is c. It is the final electron acceptor in the aerobic respiration.
Explanation:
Oxygen is a substrate of the aerobic respiration, but it is not the only one. Glucose is also a substrate.
Oxygen is used in the cells to be the final electron acceptor, this means that receives the electrons from NADH and FADH2. That is why, when there is no oxygen available for aerobic respiration, the NADH and FADH2 cannot be oxidized and therefore remain in their reduced form. As a consequence, they cannot be re-utilized during different cellular processes that are NAD+ and FAD dependant, such as glycolysis, pyruvate oxidation and cellular respiration. This means that the ATP synthesis stops.
Oxygen itself does not transport any electrones, this are transported by the cytochrome complex in the mitochondrial membrane. But oxygen is key in receiving those electrones, therefore a very important piece of the electron transport across the mitochondria.
Answer: (A) Hyperal dosteronism
Explanation:
In the case of hyperaldosteronism the levels of secretion of aldosterone increases. This can become responsible for alkolosis and hyperkalemia. High blood pressure, low levels of potassium, headache, muscle weakness, numbness and feeling tired are the symptoms of the hyper dosteronism. Also the increase in the content of sodium and decrease in levels of magnesium causes polyuria and polydipsia without causing polyphagia.
Answer: He should immediately start chest compressions and call for help.
Explanation: This will ensure that the heartbeat of the man does not stop or he does not stop breathing. This ensures the safety of the man until help arrives. (I see that there is a Select all that apply at the bottom but i see no choices, so if there are choices, please share them)
Xylem
Explanation: Xylem carries water and nutrients upward from the roots to the leaves.
Answer:
The mother supplies the embryo with nutrition through the umbilical cord, which means the egg has no need for a food storage compartment.
