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lapo4ka [179]
3 years ago
11

Name three properties that are sometimes used to separate mixtures.

Biology
1 answer:
vova2212 [387]3 years ago
7 0

Answer: The separation scheme used to separate the mixture is based on differences in the physical properties (such as boiling point, melting point, solubility in a given solvent, etc.) of three components.

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What was the purpose of placing the drop of distilled water onto the slide before smearing the bacterial colony onto the slide?
12345 [234]

Answer:

1. In order to fix the bacterial to the slide;

<u>so that it will not be lost during the staining procedure.</u>

<u>so that false impression  or result will not be given by the bacteria in water,</u>

<u>Distilled water is used to prevent contamination with impurities  e,g metals ions and crystals</u>.

Explanation.

In smear preparation; the bacterial cells should also be well dispersed,so that they do not clumped together to form' big glob'.(large round masses) The later affect clear field view of the bacterial mophology, affected staining,  and therefore  gives inaccurate results,

Fixing to the slide also affects the morphology of bacterial cells, through shrinking in size, which can lead to loss of structural characteristics and extra-cellular matrixes,

4 0
4 years ago
An elongating ribosome is bound to appropriate tRNAs in both the A and P sites and is ready for peptidyl transfer. What happens
Nata [24]
The answer for this is C
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4 years ago
In the sterilization area, instruments should move from a/an _______ to a _______ area.
slega [8]
Cleaning/preparation I know that these are correct because i put the same answer on my test and they were correct
3 0
4 years ago
Read 2 more answers
1. What is sustainable energy? 2. How do we currently use energy in Georgia? 3. Which types of fossil fuels could / should we us
devlian [24]

1. Sustainable energy is the one that meets the needs of the present without compromising the possibility of future generations to meet their own needs for energy. This is actually an effective way of producing energy that has a little harmful effect on the environment. 

There are three conditions that some energy must satisfy in order to belong to the group: 

- ecologically: clean, renewable

- social: available for everyone  

- economic: provides at least the minimum profit

Sustainable energy includes the use of renewable energy sources such as hydropower, wind energy, solar energy, wave energy, geothermal energy, biomass energy.


2. In Georgia, the most of energy consumes transportation and industrial production is the second energy consumer in the country. There are many industrial plants that consume a lot of energy such as food and beverages, tobacco, chemical, plastics, wood, machinery and metal industry. Energy consumption by the population is almost identical to the consumption by industry.



3. We should use less coal and petroleum because they are the largest source of greenhouse gas emissions, like CO2 from fossil fuel combustion. Combustion of fossil fuels also produces other air pollutants, such as nitrogen oxides, sulfur dioxide, volatile organic compounds and heavy metals which damage our environment.


4. We should use more solar energy, wind energy, and geothermal energy. These sources of energy are inexhaustible and free, and the most important characteristic of the resources is that they do not pollute the environment. Also, it is a better choice to build own renewable energy facilities than import costly fuels.


5. In my area, I would propose next renewable energy sources: biomass, wind and solar power. Here, there is a flat land and during the year we have a lot of sunny and windy days. There is huge potential for producing the kinds of energy and it would be economically rentable. Also, it is a forest area with the great amount of biomass, which could collect and use for energy production instead of rotting on the ground.


6. We could do a lot of things to decrease energy consumption, starting from simple things like turning off the lights, using energy efficient light options (LED bulbs), unplugging electronics which use standby power, choosing energy-efficient items, better insulation of houses etc. Also, we could less drive own cars and use more public transport or ride bicycles.

3 0
4 years ago
Which of the following serves as the framework of the ribosome? Group of answer choices tRNA rRNA mRNA DNA
kaheart [24]
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8 0
3 years ago
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