Answer:
The R organic group.
Explanation:
Amino acids are a complex of organic compounds that combine to build proteins. The general structure of an amino acid is set by a carboxyl group (―COOH), a basic amino group (―NH2), and an organic R group, unique in every amino acid.
The amino acids differ from each other in the <u>particular chemical structure </u>and organization of hydrogen, nitrogen, carbon and oxygen atoms present in the organic R group.
<span>Duchenne Muscular Dystrophy (DMD) leads to progressively worsening physical disability. Death often occurs by age 25, typically from lung disorders. However, advances in supportive care have resulted in many men living much longer than this.Specific common causes of death include:
Cardiomyopathy (can also occur in female carriers, who should also be screened)
Congestive heart failure (rare)
Deformities
Heart arrhythmias (rare)
Mental impairment (varies, usually minimal)
Permanent, progressive disability, including decreased mobility and decreased ability to care for self
Pneumonia or other respiratory infections
Respiratory failure</span>
Answer:
The correct answer is: enhanced zones of inhibition in the area between two adjacent disks.
Explanation:
- According to the question, the two antibiotics show the property of Synergism.
- Synergism can be defined as the property of two drugs, where the efficiency of activity (killing the bacteria) obtained on using the two drugs together is far more than the efficiency obtained by using individual drugs separately.
- In the disk diffusion method, the efficiency in activity (killing of bacteria) of two drugs is determined by plating a nutrient agar media with the particular target bacteria and adding the two antibiotics in two discs separated from each other by a certain distance.
- Both the antibiotics diffuse into the agar media from the discs and kill the target bacteria.
- Zone of inhibition can be defined as the circular clear zone on the nutrient agar plate obtained after allowing the bacteria to grow for the required period of time. This is the region where no bacteria grow as they are killed by the antibiotics used.
- Depending upon the efficiency of the antibiotic used and also its ability to diffuse into the nutrient agar medium, bacteria tends to grow near the periphery of the nutrient agar plate where the antibiotic fails to reach.
- In the question, as the two antibiotics used show synergistic effect, the region on the nutrient agar plate in between the two discs, where both the antibiotics are able to percolate will show a larger zone of inhibition.
Answer:
1. c. amount of sediment present in water. 2. B) a biotic factor limiting an abiotic factor
Explanation:
