Answer: C) Not all scientific knowledge begins with an experiment
Explanation:
Fleming's lab was very messy, and one day when he is back from his vacations, he noticed that a colony of a fungus had grown as a contaminant on one of the Petri dishes sown with a bacteria called <em>Staphylococcus aureus</em>. Fleming observed a bacterial lysis, which means the death of the bacteria.
<u>The dishes got contaminated by Penicillium</u>, which is a mold that produces a an antibacterial substance, called penicillin. <u>This is an antibiotic that attacks a wide range of bacteria.</u>
At first, his findings were underestimated and he was not able to isolate this penicillin. But in 1940, Howard Florey and Ernst Chain found out that <u>this antibiotic could be used as a therapeutic agent to fight bacteria.</u>
So, in this case the discovery of penicillin was accidental, without planning a specific experiment.
Hi there hopefully this helps!
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We humans belong in the ANIMALIA kingdom.
The animalia kingdom consists of various multicellular eukaryotic animals. It is one of the kingdoms among the five kingdom scheme of classification.
Answer:
These molecules share features in common with primordial forms of life
Explanation:
Coacervates are considered to be complex systems formed by the association of organic molecules. These systems are related to primitive forms of life due to the fact that they are formed by organic matter, molecules with opposite charges and hydrophobic polypeptide chains
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The correct answer would be photosynthesis
Why? - oxygen built up in the atmosphere after prokaryotes became autotrophic or became able to use photosynthesis.
Answer:
An incomplete dominance bad heterozygous individual blends the two traits.
With codominance you'll see both alleles showing their effects but not blending whereas with incomplete dominance you see both alleles effect but they've been blended
