Answer:
b. Because they have a low affinity for the H+
Explanation:
All electrons that enter the transport chain come from NADH and FADH2 molecules that are produced in earlier phases of cellular respiration: glycolysis, pyruvate oxidation and the citric acid cycle.
NADH is very good at donating electrons in redox reactions (that is, its electrons are at a high energy level), so you can transfer your electrons directly to complex I and transform it back into NAD +. The movement of electrons through complex I in a series of redox reactions releases energy, which the complex uses to pump protons from the matrix into the intermembrane space.
FADH2 is not as good for donating electrons as NADH (that is, its electrons are at a lower energy level), so it cannot transfer its electrons to complex I. Instead, it introduces electrons to the transport chain through complex II, which does not pump protons through the membrane.
Crossing over is done in Pachytene stage of meiosis 1 !!
High-quality cpr is administered when you compress the chest to which depth about 2 inches.
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CPR</h3>
Cardiopulmonary resuscitation (CPR) is a life-saving emergency technique that involves giving someone who is having a cardiac arrest chest compressions and sometimes artificial ventilation in an effort to keep their brain functioning normally until additional steps are taken to bring back their breathing and spontaneous blood circulation. In people who are unresponsive and not breathing or who are breathing abnormally, such as experiencing agonal respirations, it is advised.
Adults who need CPR must perform chest compressions between the depths of 5 cm (2.0 in) and 6 cm (2.4 in) per minute, at a minimum.
By utilizing a machine that forces air into the subject's lungs or by exhaling into the subject's mouth or nose (mouth-to-mouth resuscitation), the rescuer can also offer artificial ventilation (mechanical ventilation).
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Quit smoking, The process of giving up tobacco use is known as smoking cessation, also referred to as quitting or halting. Nicotine, which is addictive and can lead to dependency, is present in tobacco smoke. As a result, withdrawal from nicotine frequently makes quitting difficult.
The first three days after quitting, when symptoms normally reach their climax, are followed by a period of around two weeks. It gets a little simpler when you get past those difficult first few weeks. What aids? Before quitting, you should start to create arrangements. What occurs when a smoker stops? Your breathing and capacity for exercise will start to dramatically improve.
Your chance of having a heart attack is greatly reduced. Your risk of developing laryngeal, throat, and mouth cancer is halved, and your risk of stroke is reduced. When compared to a smoker, your risk of acquiring lung cancer is decreased by half.
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