A memory B cell is kinda of how it sounds it has a memory of what your body has fought before such as a virus and can stimulate a response quicker then the first time you encountered it.
If you lack memory B cells your body doesn't built up the same immune response when you come into contact with the virus again.
"Vaccination would prevent further disease" Incorrect, a vaccine lets you build up memory cells to combat the disease if you lack them you cannot build up a defense.
"Vaccination would not prevent further disease" Correct, a vaccine can be a dead version of a virus or parts of a virus that shows your body what to respond to quickly in the future. If you body cannot make memory b cells it wouldn't help to use a vaccine. Your body wouldn't keep a memory of it being bad.
"You would not produce antibodies" Even if your body does not remember a particular virus it does produce antibodies to combat it just not as quick or efficiantly as something it has come into contact with before and produced memory cells.
"You would over produce histamine" Incorrect, different process for that histamine.
Ventricular Tachycardia is a type of fatal arrhythmia that forms one ofnthe most common forms of Cardiac arrest.
Ventricular Tachycardia is dangerous because the heart beats too fast that the ventricles are unable to fill with blood and are hence unable or have a decreased cardiac output.
Answer - There can be many factors such as mutations, natural selection, nonrandom mating, genetic drift, gene flow. But nonrandom mating can have long term effects.
Reason - Reason why it has a long term effect is because of the survival of that organisms and how it will adapt to its own environment with the introduction of nonrandom mating etc..
Answer:
Ferns- reproduce through spores
Orange tree's- Reproduce by grafting
Explanation:
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