Answer:
Option A.
Explanation:
The sodium pump in the neuron is electrogenic,there are three Na+ from every K+ that enter the cell . If there is a blockage to all sodium pump activity in a cell, there would be an instant change in the membrane potential which will not allow the action potential to take place because a hyperpolarizing current was removed, which means that the membrane potential becomes less negative. Therefore the electrogenic contribution of the sodium pump to the membrane potential will be small which lead to small depolarization.
Answer:
Arrows on a food chain, or food web, represent the flow of energy.
Explanation:
"The placement of the arrows in a food chain or food web is very important. The arrows always show the direction of the energy as it is transferred from one organism to another."
Before administering a cephalosporin to a patient, it is most important for the nurse to assess the patient for an allergy history to penicillin. The drug cephalosporins belong to the group of beta-lactam antibiotics which has a similar structure and as well as action to that of penicillin. If a patient has allergy reaction of penicillin, then surely the patient would not be able to take in cephalosporins. This antibiotic is produced from the fungus Acremonium. It is being used to treat infections that are caused by bacteria which is susceptible to this type of antibiotic. The first generation of this antibiotic was made to kill gram-positive bacteria and it was further developed for it to have increased activity to gram negative bacteria.
