1. The cellular components of bacteria that make them powerful pathogens include the pili, the capsule and the endospores. The pili allows the bacteria to attach itself to the host very tightly, the capsule protects the bacteria from been destroyed and the endospores enable the bacteria to survive in harsh conditions.
2. Penicillin are more effective against gram positive bacteria because, gram positive bacteria possess only one layer of cytoplasmic membrane, this allow for easy penetration of their cells by penicillin. Penicillin is not effective against gram negative bacteria because they possess two layers of cytoplasmic membranes.
3. It is very important to understand the structure of a bacteria cell when developing an antibiotic because the effectiveness of the antibiotic depend on the knowledge of the structure of the bacteria and its mechanism of action. Understanding the structure of the bacteria will provides the antibiotic developer the knowledge of the best structure of the bacteria to attack in order to destroy it.
4. The antibiotics which are used as medications against bacteria are usually targeted at the cell wall of the bacteria and human cells do not have cell wall. The antibiotics works by specifically targeting and destroying the bacterial cell wall and invading the cell.
5.The class of antibiotic that should be prescribed for Sue is the sulfa antibiotics.
Sue is suffering from Neisseria menigiditis bacterial infection. Neisseria menigiditis is a gram negative bacteria and so penicillin is not effective against it. The sulfa class of antibiotic destroy the bacteria by interfering with the folic acid synthesis of the bacteria. It does this by preventing the addition of a chemical call PABA to the folic acid molecule during synthesis.
6. Antibiotics are not effective against viruses because, viruses use their host cells to carry out their activities. Antibiotics drugs are designed in such a way that they interfere with one or two of the processes that are vital to the survival of the bacterial cell, thus killing it. But this mechanism can not work in virus because viruses use their hosts' cells to replicate and survive.
In the lower part of Earth's crust and in the upper part of the mantle.
The correct option is C.
There are basically two types of cells, they are prokaryotic and eukaryotic cells. The eurkaryotic cell is a well developed cell that is usually find in multi cellular organisms while the prokaryotic cell is usually find in unicellular organisms. The prokaryotic cell is typically described as a primitive cell because it lacks nucleus and do not possess most of the remaining cell organelles. The organisms that possess prokaryotic cells are called prokaryotes. Examples of such organisms are bacteria and archaea.
Instead of nucleus, prokayotes possess a nucleiod region which contains the cell's DNA. Prokaryotic cells also possess cell wall, cytoplasm and ribosomes.
Two pints of ice cream costs $12.
