A scientist is studying a form of marine bacteria growing in culture dishes. He noticed that a clear area formed around the mold
where the bacteria that had grown in this area died (this is now referred to as a zone of inhibition). In the culture dishes that had no mold, no zones of inhibition were present. Formulate a valid hypothesis based on his observations. A.) The temperature in the lab was too cold for the mold to grow.
B.) The mold must be producing a chemical that killed the bacteria.
C.) The bacteria must be producing a chemical that killed the mold.
D.) The temperature in the lab was too cold for the bacteria to grow.
The answer would be C The mold is most likely an antibiotic which produces substances harmful to the strain of bacteria and therefore any bacteria in its zone of inhibition will die as a result
Correct answer: B.) The mold must be producing a chemical that killed the bacteria.
Antibiotics is an antimicrobial substance that is used against bacterial infection. They work to inhibit the growth of bacteria either by slowing the growth of bacteria or by killing them. They are not used against viral infections like common cold or flu.
Penicillin was first antibiotics that were discovered by Alexander Fleming while working in the lab with the mold <em>Penicillium notatum</em>
<span>After
digestion, an amino acid not absorbed by the body and not used to build
proteins will first be subjected to removal from its amino group. If they are
not used for protein synthesis, amino acids becomes part of the metabolism
process. The body has the capability to create a subset of amino acids, also
known as non-essential amino acids because we don’t have requirement for them
in our diet. </span>
