Hi, Natural Killer Cells secrets chemicals that cause pores to form in the membrane of abnormal cells, leading to cell death.
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ELEMENTS:
1.) Hydrogen
2.) Helium
3.) Lithium
4.) Beryllium
COMPOUNDS:
1.) baking soda:sodium hydrogen carbonate sodium bicarbonate:NaHCO3
2.) bleach (liquid):sodium hypochlorite or hydrogen peroxide:NaClO H2O2
3.) bleach (solid):sodium perborate:NaBO3
4.) Borax:sodium tetraborate decahydrate:Na2B4O7.10 H2O
Which of the following statements explains how strains of methicillin-resistant Staphylococcus aureus appeared two years after doctors began using the antibiotic methicillin?
- The drug-resistant bacteria existed in the population but did not have an advantage until the environment changed with the introduction of methicillin.
- In response to the treatment with methicillin, the bacterial population gradually began to synthesize cell walls using a protein that was not affected by the drug.
- The bacteria that survived the drug methicillin, developed an immunity to the drug.
- The bacteria mutated in response to the drug and began making drug-resistant versions of proteins need to build cell walls.
In response to the treatment with methicillin, the bacterial population gradually began to synthesize cell walls using a protein that was not affected by the drug.
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Unlike endocrine glands, exocrine gland RELEASE SECRETIONS OUTSIDE OF THE BODY.
There are two types of glands in the body, the endocrine and the exocrine glands. The endocrine glands are ductless glands and their secretions are normally released directly into the blood stream. The exocrine glands on the other hand have ducts, through which their secretions are release outside the body. An example of this is the sweat gland.
Many different codons specify the same amino acid.