When every dilution of your sample results in a plate that is too few to count we should filter the original sample and use most probable number method .
Probable number method count and determine the number of bacteria in a culture, plate aliquots of the dilutions onto agar with sterile pipettes, spread with glass sticks, incubate at 37°C and count the number of colonies. It is imperative that you utilize your best culture technique.
Not all bacterial cells produce colonies, as some bacteria tend to clump or aggregate, and some are nonviable. For this reason results are reported as colony forming units (CFU)/ml of bacterial culture. Ideally only plates with 25-250 colonies are used.
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Answer:
It is 'C'
Explanation:
The chemical reaction that occurs in the chloroplast is:
6CO₂ + 6H₂O → C6H₁₂O₆ + 6O₂
The electromagnetic energy of sunlight is converted to chemical energy in the chlorophyll-containing cells of photosynthetic organisms. The granum stores the photon particles from light and converts its energy into chemical energy to convert carbon and water into glucose and oxygen.
Answer:
Well, it’s because tattoos have to get that ink deep enough that it won’t get washed away but not too deep so it remains visible — the ideal location ends up being right next to your skin’s pain receptors.
Answer:
Options B and C
Explanation:
Living things can be divided into three domains: archaea, bacteria and eukarya
The domain "eukarya" includes kingdom fungi, plantae, and animalia
A Fungus is any member of the kingdom Fungi. Fungi are eukaryotic organisms typically having chitin cell walls but no chlorophyll or plastids. Fungi may be unicellular or multicellular. Examples of fungi are mushroom, yeast, mucor etc
Plants are multicellular eukaryotic organisms that have double-membraned chloroplasts in its cells containing chlorophyll.
Animals are multicellular organisms that is usually mobile, whose cells are not encased in a rigid cell wall (distinguishing it from plants and fungi) and which derives energy solely from the consumption of other organisms (distinguishing it from plants).
There are multiple characteristic that all dinosaurs shared. Some of the synapomorphies include:
- Vertebrates; skeletons with back bones that surrounds a nerve cord.
- Amniotes; specially adapted for life on dry land.
- Diapsids; two holes located above and behind the eye sockets on each side of the skull.
- Archosaurs; antrobital ferestra, a hole between the nasal hole and the eye socket hole.
But still all of this doesn't separate them from all others, what is unique to them is that all of the 'true dinosaurs' were land dwellers.
