<span>Antibiotics need to be used with caution because of evolution. If you treat bacteria with an antibiotic, some will be resistant by sheer chance. Those ones will survive and go on to divide - producing more antibiotic resistant bacteria. With medical antibiotics, they must be taken for the entire course. Even after symptoms have passed, bacteria remain in the body. If a patient stops taking antibiotics too early, the survivors can keep dividing and cause a new antibiotic resistant infection. With the normal course of medication, antibiotics kill off enough bacteria and keep them at bay long enough for the immune system to finish the job and take care of any resistant stragglers.
The real danger, though, comes from antibiotic use in livestock. It's more cost effective to feed cattle with a constant supply of antibiotics, whether they're sick or not (as opposed to just treating them when they're sick). These antibiotics keep them from getting sick, but it means that eventually bacteria adapt to them and gain resistant. To make matters worse, the antibiotics are often passed from their bodies in their waste, which can go on to contaminate waterways. This can disrupt ecosystems and produce antibiotic-resistant bacteria in the wild. This type of usage is of much more concern because of its scale - there are far more cows on antibiotics than people</span>
The subunit of fat is called trigylceride; it contains 3 fatty acids in a glycerol backbone. Glycerol and fatty acids are the simplest subunits of fat molecules.
If Josh finds that there definitely is a relationship between enzyme action and temperature and graphs his results and the enzyme functions as a biological catalyst and has its optimum effectiveness at 39 degrees. The correct answer to the following given statement above is B.
Answer
<u>Lungs</u> - "The human body posses to similar structures for inhalations and exhalation of air in the body". As lungs are in a pair and has the capacity of about 5 liters in total".
When the lungs face cold or humid air they operate as follows.
Explanation:
<u> Releasing Histamine</u>
lungs when faces cold air it release the chemical histamine in it so it can contract the soft muscle and contract the air ways.
<u> Humidifying the air</u>
As the human body has an inbuilt system to humidify the air up to 100 percent and 96' F in temperature for better operation.