Traits that reflect specific evolutionary lineages and can be informative of evolutionary relationship.
Answer:
Option-A
Explanation:
β-Lactam antibiotics are the antibiotics that contain β-Lactam rings in their structures like in cephalosporins and penicillin.
The antibiotics act by inhibiting or disrupting the process of cell wall formation in the bacteria which is mediated by an enzyme called penicillin-binding proteins.
To bind covalently to the PBP proteins, the antibiotic has to diffuse through the bacterial cell wall. since the gram-negative bacteria contain an additional lipopolysaccharide layer which decreases the penetration of the antibiotic, therefore, the gram-positive bacteria lacking the additional layer are more susceptible than gram-negative bacteria.
Thus, option-A is the correct answer.
Answer AND Explanation:
Classification is the orderly arrangement of organisms into groups based on their similarities. The modern method of classifying organisms was devised by Carolus Linnaeus. The characteristics used include:
- Anatomical structure- whether the organism is prokaryotic or eukaryotic
- Biological processes for example photosynthesis in plants and production of hormones.
- Cell structure
- Body type- unicellular or multicellular
- Mode of nutrition- heterotrophic or autotrophic
Answer:
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Explanation:
