In the viable plate count method, a measured volume of a culture is evenly spread across an agar surface and incubated. Each <u>colony </u>represents one <u>cell </u>from the original sample.
Explanation:
A viable count is the number of colony forming units (cfu) of microbes per gram or per milliliter of the sample, or cfu/gm or cfu/ml.
In order to find whether the cells counted is viable or not, methods like plate-count method, membrane-filter methods are used. These tests allow the visible cells to grow and multiply to check the viability.
The plate count method is done by growing the microorganisms like bacteria on a plate in a nutrient medium or substrate like the agar surface. The bacteria will grow into colonies and will be visible to the naked eye.
Each colony unit is counted and each unit in a colony represents a single cell of the bacteria or any microorganism cultured and counted.
The counting is done by various methods like hemocytometers, streak plate etc.
The right answer is C) vector
In molecular biology and genetic engineering, vectors are DNA molecules that allow the propagation of sequences of interest. These are chimeric DNA molecules such as plasmids or artificial bacterial chromosomes, containing an origin of replication and one or more genetic markers. The origin of replication allows the maintenance of the vector in the target cell during generations.
A. carbon dioxide It goes into the atmosphere and theres carbon emissions
Answer:
In plants that undergo double fertilization, the structure that forms to nourish the seed is called the <u><em>endosperm</em></u>.
Explanation:
The process of double fertilization can be described as a phenomenon in which one of the sperm cells fertilizes the egg cell whereas another sperm cell joins with the two polar nuclei of the ovule
The sperm cell and the egg cell will unite and form the zygote.
<u><em>On the other hand, the sperm which fuses with the two polar nuclei will form the endosperm.</em></u>
<u><em>The endosperm can be described as a nourishing tissue which provides the embryo with nutrients so that it can develop and mature. </em></u>
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