Foodborne illness is the contamination that results from the spread of bacteria from meat to vegetable. Various types of pathogenic micro-organisms get access to food, which is rich in nutrients and allows bacteria to flourish. When such contaminated foods are eaten, they cause foodborne illness.
<span>Streptococcus is a genus of coccus (spherical) Gram-positive bacteria belonging to the phylum Firmicutes[3] and the order Lactobacillales (lactic acid bacteria). Cell division in this genus occurs along a single axis in these bacteria, thus they grow in chains or pairs, hence the name—from Greekstreptos, meaning easily bent or twisted, like a chain (twisted chain). Contrast this with staphylococci, which divide along multiple axes and generate grape-like clusters of cells.)</span>
The answer is;
a. add electric current.
b. add buffer solution
The process of gel electrophoresis taps on the property of net charges of molecules to ensure that they travel up the gel. Additionally, the buffer acts as the mobile phase for the molecules and also give molecules net charge as they travel through the gel. It is until the molecules reaches an isoelectric point,where the molecule has zero net charge, that they stops moving through the gel. This is how bands are formed.
<span>The statement "Abnormal cells crowd out cells and steal nutrients" is true. Abnormal cells are the cells that are not considered as normal and usual in the human body. Cancer cells are example for abnormal cells. These </span><span><span>ignore normal laws of tissue boundaries and local territories. They cause problems to cells and organs crowd out other organs, take up space and prevent other critical functions from happening.</span> </span>
According to the stability-diversity hypothesis, tropical rain forests are stable communities because they have high species richness. Thus, the correct option is A.
<h3>What is Species richness?</h3>
Species richness may be defined as a count of the number of species living in a community at a particular time.
The tropical rainforest has a stable climate with moderate rainfall. So, species richness and diversity have been found in this biome.
Therefore, the correct option for this question is A.
To learn more about Species, refer to the link:
brainly.com/question/1542287
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