The question is incomplete. The complete question is as follows:
A treatment for bacterial infections from the early 20th century has made a comeback-the use of bacterial viruses to eliminate bacterial infections. Which explanation most accurately describes this mechanism of action behind this treatment?
A. A wide variety of bacteria cause a large percentage of human infections, producing much sickness and death.
B. Viruses can infect bacteria, transferring pathogenic genes. The viral genes can then be suppressed, causing the bacteria to not replicate viruses.
C.The attachment structures on the virus and the receptors on the host cells make for exquisite specificity of viruses for particular bacterial species.
D. Antibiotic resistance in humans is on the increase, so using a different kind of therapy is more beneficial.
Answer:
Option (C) and (D).
Explanation:
The pathogens are the organisms that can cause harm to the living organisms. Various strategies and drugs has been research to kill these pathogens
The viruses can also be used to treat the bacterial and viral infections. This methodology was used in the early 20th century but has come back because the antibiotics that are given makes the bacteria resistance against the particular treatment. The virus and bacteria has some specific and unique receptors that provide specificity of the virus against the bacteria and can be used for the treatment.
Thus, the correct answer is option (C) and (D).
Answer:
Okay
Nutrition is the process of providing or obtaining the food necessary for health and growth.
Nutritional disease, any of the nutrient-related diseases and conditions that cause illness in humans. They may include deficiencies or excesses in the diet, obesity and eating disorders, and chronic diseases such as cardiovascular disease, hypertension, cancer, and diabetes mellitus.
Explanation:
Answer:
The correct answer is D.
Explanation:
Papillary muscles, attached via chordae tendineae, help to close the valves and prevent regurgitation.
Pectinate muscles are parallel ridges in the walls of the atrium of the heart, mainly in right atrium. They can stretch during adverse loading conditions, to <em>help the right atrium to dilate without much wall stres</em>s.
Answer:
The correct answer is C. The medial surface of the left lung exhibits a concavity called Cardiac Notch.
Explanation:
The two lungs are not of equal size because the heart is located somewhat oblique, with its apex slightly to the left of the middle plane of the body, which forces the left lung to have a concavity in its medial aspect to accommodate the apex of the heart, resulting smaller than the right lung. The cavity in the left lung that houses the apex of the heart is called the cardiac notch.
