The bacteria, Angelinus ballerinea secretes a compound that inhibits the growth of other Gram-positive bacteria. Scientists take this compound and add chemical groups to it to make it more stable for use in humans to treat bacterial infections. This is an example of antibiotic.
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What is antibiotic?</h3>
- Antibiotics from the key class of glycopeptides can stop this process.
- Through five H-bonds, these antibiotics bind to the C-terminal d-Ala-d-Ala of the murein precursor, lipid II, and immature peptidoglycan, preventing transglycosylation and/or transpeptidation during the production of the cell wall.
- Contrarily, antibiotics have easier access to the thick, porous peptidoglycan layer in the cell walls of Gram-positive bacteria, allowing them to more easily enter the cell and/or interact with the peptidoglycan itself.
- The two main antibiotics that prevent the synthesis of bacterial cell walls are penicillins and cephalosporins.
- Penicillin is one of many antibiotics that assault the bacterial cell wall in order to operate.
- The medications specifically stop the bacteria from producing peptidoglycan, a chemical that gives the cell wall the toughness it needs to live in the human body.
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Answer
Scientists are unable to find nucleotide in water because of the following factors:
Reason 1.
Water is polar molecule while nucleotide is an organic molecule and is not soluble in water.
Reason 2
Nucleotide is the main component of nucleic acid, while water is composed of hydrogen and oxygen.
Reason 3
The nature of bond n both molecule is different.
thats why scientists are unable to find nucleotide in water.
Answer:
Reproduction sexual results in offspring with greater genetic wariation
Explanation:
Sexual reproduction gives greater variability because it allows the offspring to inherit chromosomes and genes from both parents producing random combinations of characters. In meiosis half of chromosomes corresponds to the mother and half to the father; therefore, half of the chromosomes are paternal and half are maternal.
Another source of variation by chromosomal combination in meiosis is crossing-over where the combination occurs between the maternal and paternal chromosomes, but is performed within each pair of homologues, multiplying the types of gametes that are formed.
On the other hand, mitosis or asexual reproduction produces identical organisms, so the genetic variation is very low.
Answer:
Both involve proteins in the cell membrane.
Explanation: