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Which method often results in colonies developing down throughout the agar and some colonies on the surface?
Wiki User
∙ 12y ago
pour plate
Wiki User
∙ 12y ago
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What is the effect of pH on surface tension?
For most liquids, an increase in pH results in decreased surface tension. This has been attributed to lower attraction force between molecules when pH rises.
Why is coal pulverized?
Combustion is a surface process, and results from heating of the solid material. Coal is pulverized so as to give a greater surface to volume ratio, and thus burn more readily.Indeed powdered materials will sometimes combust explosively, such as explosions in flour mills.
What effect does aging have on a nickel?
tarnishing (a chemical change)Exposure to oxygen in the air or water causes a chemical change to occur on the surface of the nickel. This results in the nickel turning a black color.
What term best describes the process by which particles escape from the surface of a nonboiling liquid and enter the gas state?
Evaporation (more for talking about water) or vaporization (as a general term) refers to the process in which a liquid changes into a gas. In evaporation, the liquid turns into a gas at the surface. In boiling, vaporization occurs throughout the liquid.
What substance is used to make surface shine?
That would depend on what the surface is made of. Water will impart a shine to just about any surface, but the shine is not long lasting as the water quickly evaporates. Shine results from even reflection of light from a smooth surface. A surface of paint may be made more shiny by coating with varnish or with a mixture of oil and solvent, fingernails are made shiny by the application of nail polish (pigments dispersed in solvent), lips are made shiny with lip gloss (usually a mixture of oils and pigment), weight lifters make their skin shiny with oil.
How do surface colonies differ from deep or buried colonies?
Deep buried colonies would be in an anaerobic environment whereas surface colonies would be exposed to air. Additionally, surface colonies might not have access to enough nutrients so they may begin to enter death phase.
How do the colonies on the surface of the pour plates differ from those suspended in the agar?
How do colonies on the surface of a pour plate differ from those suspended in the agar?
How do colonies on the surface of a pour plate differ from those suspended in agar?
How do colonies on the surface of a pour plate differ from those suspended in the agar?
Why does sea water stay at the surface of the ocean?
Oceans are seawater throughout, not only on the surface.
What are the surface colonies on a pour plate larger than those within the medium?
The surface colonies on a pour plate larger than those within the medium especially aerobic bacteria within the medium would be a restriction of growth. The restriction of growth would be due to the lack of oxygen.
Which areas did Great Britain have colonies in?
25 % of the world's land surface.
The type of the fog that results when moist air move across a cold surface is?
Advection fog results when moist air moved across a cold surface. When moving across a cold surface, the air is cooled to its dew point.
The type of fog that results when moist air moves across a cold surface is?
Advection fog results when moist air moved across a cold surface. When moving across a cold surface, the air is cooled to its dew point.
What are the results of surface contamination used to determeine?
The results of the surface contamination are used to document the site's health and cleanliness. They can also determine if safety regulations are working correctly or needs modified.
Are lenticulate colonies found on the surface?
No, they grow within agar and have an oval shape.
Three differences between evaporation and boiling?
EVAPORATIONtakes place at the surface of liquid.heating not requiredtakes place at all temperature.results in cooling since heat is absorbed from the surface.BOILINGtakes place throughout the liquid.requires heating.takes place at different temperature.doesnot results in cooling.
What happens throughout a liquid and not just at the surface?
Diffusion occurs throughout the solution and not just at the surface. Just the opposite of this is the activity of enzymes. Dropping colored dye in water will diffuse evenly through the solution.
