members of the enterobacteriaceae can be distinguished from each other by: group of answer choices the ability to ferment lactos
e both motility and the ability to ferment lactose. the presence or absence of the enzyme oxidase. both motility and the presence or absence of the enzyme oxidase. motility.
Members of the Enterobacteriaceae can be distinguished from each other by both motility and the ability to ferment lactose.
There are numerous genera in the Enterobacteriaceae family that are connected to one another both biochemically and genetically. In terms of taxonomy, the Enterobacteriaceae family now consists of around 170 recognized species and 53 named genera, of which 26 genera are known to be connected to infections in humans. This family of bacteria contains a lot of well-known bacteria, including <em>Yersinia</em>, <em>Escherichia coli</em>, etc. They are tiny rods that are gram-negative. They are facultative, non-sporulating anaerobes. MacConkey agar is used to isolate and distinguish organisms of the Enterobacteriaceae family because they have basic nutritional needs.
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The process of muscle contraction requires several steps.
The most famous theory on how the contraction and relaxation of muscles take place is the sliding filament theory.
However, this theory has been refined and one important addition to it is the mechanism by which myosin can pull actin and cause shortening of the sarcomere.
For the movement of myosin, it binds and releases actin and forms cross bridges.
Myosin is subdivided into two regions - S1 and S2. The contraction of the S1 region is what constitutes the power stroke.
An important requirement of the power stroke is the hydrolysis of ATP to release an inorganic phosphate which provides energy for the process.
