<span>one example would be catabolic reactions... cellular respiration is a simple one. The food is bonded chemically and when we break them apart, it releases energy. </span><span>it's such a broad question and it's hard to really say, because it's biochemistry and it all connects and builds... if that makes sense? </span>
Answer: The correct answer is (D) Both A and B
Explanation:
When an axon is depolarized at halfway to the threshold level,the action potential will be generated that would travel 'downstream' i.e towards the synapse and 'upstream' i.e back towards the cell body. This is because both channels on either sides are not under refractory period,i.e they are open.
Kidneys remove excess water etc.
You should ask for details about what happened to them
