Answer:
The control group? (IDK)
Explanation: Isn't the control group the group that has all the factors that the experimental group has, except for the factor that's being changed?
Most likely showing your work would contain self checks, so study guides?
Answer:
Opening of sodium channels
Explanation:
Sodium channels play important roles in transmission of nerve impulse as well in the releasing of neurotransmitter (Acetylcholine). Both of these are dependent on sodium channels. As for the transmission of impulse the first step is depolarization of nerve cells and for depolarization the opening of sodium channels is necessary.
So the neurotransmitter released from on neuron and binds to receptors on other neuron causes the opening of sodium channels. These channels cause the influx of sodium into the neuron and alternatively cause the depolarization by making the inside of cell less negative. During this process a minor amount of potassium also move out of the membrane.
Explanation:
Basically, lac operon is an enzyme, and enzymes work in a very well known way called lock key system
. This lock key system works pretty simply, imagine the lock as the enzyme, and this lock needs a specific key to open it, thinking about an enzyme, it needs the specific substrate to breakdown the lactose, this enzyme is called lactase, and it's present in some animals and bacterium too. This doesn't only work for lactose, it's the same lock system for every enzyme, all of them need specific substrate to break it down into things that the body can use for many things.
