Alexander Fleming discovered the penicillin in 1928. He noticed that some bacteria he had left in a petri dish had been killed by naturally occurring penicillium mould.The penicillin began the era of antibiotics, has been recognized as one of the greatest advances in therapeutic medicine. The research required to determine if the penicillium extract was safe and killed bacteria was done at Oxford University.P<span>rogram of animal experiments and clinical trials was carried.</span>
Because it is catalyst which speeds up or slows down the speed of the chemical reaction without being changed or used up
The statement “One of the first steps in harnessing geothermal energy is to drill a well into a geothermal reservoir.” Is true. The answer is letter A. The energy in the Earth’s crust comes from the formation of the planet and radioactive decay of materials.
All of the above.
<h3>What are sulfur oxidizing bacteria?</h3>
Any of a wide range of microorganisms that can metabolize sulfur and its components and are significant in nature's sulfur cycle are known as sulfur bacteria. Hydrogen sulfide (H2S), sulfur, and thiosulfate are a few of the typical sulfur compounds that are used by these bacteria as a source of energy. Sulfate is the end result of the oxidation of sulfur.
In deep earth deposits, <em>Thiobacillus</em>, which is common in both marine and terrestrial settings, produces sulfuric acid, which dissolves metals in mines but also corrodes concrete and steel. It also oxidizes sulfur, generating sulfates that are helpful to plants.
I understand the question you are looking for is this:
In seawater, sulfate is the most common anion after chloride. Which of the following is correct with respect to the use of sulfate by some bacterial groups?
- Oxidized sulfur-containing molecules have redox potentials lower than those of the nitrogen series.
- Oxidized sulfur molecules such as sulfate and sulfite serve as electron acceptors.
- Sulfate and sulfite can receive electrons from hydrocarbons.
- Sulfate-reducing archaea and bacteria are widespread in the ocean.
- All of the above.
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Answer:
Genetic drift is referred to the changes in allele frequency in a gene pool. Gene flow is the process of alleles moving from one population to another.
Explanation:
