The term fastidiousness refers to the complexity of an organism's nutritional requirements. A fastidious microorganism will only grow if the culture medium provides the necessary nutrients. This table provides the readings on the optical density from bacterial cultures. This reading gives an indication of the concentration of the bacteria in the culture; the higher the concentration of bacteria, the greater scatter of light and the higher value of optical density. Yeast extract broth, nutrient broth and glucose broth are culture media which are enriched with more nutrients. In all these three media, <em>S.mitis</em> had the lowest optical density, meaning the lowest concentration. We can conclude that <em>S.mitis</em> is the most fastidious microorganism of the three. Then comes <em>A.faecalis</em> and the least fastidious of the three is <em>E.coli.</em>
Temperature
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wind
Answer: A
Explanation: Vaccines create memory cells with a weak version of the pathogen, so when they meet that pathogen again the body can respond more quickly and more efficiently since they have already been exposed to the pathogen.
All living things need to have cells before they are said to be living. this is because the cell is the basic unit of life.