I believe the correct answer is B)
Thick or dense smears less likely to provide a good smear preparation for microscopic because it will diminish the amount of light that can pass through making it difficult to visualize the morphology of single cells under the microscope. Some times the stain can't penetrate all of the bacteria.
<h3 /><h3>What is a microscopic smear?</h3>
- A smear is a microscopic specimen.
- A swab or loop, or the edge of another slide, is used to spread the sample to be examined, such as blood or microbial culture, thinly and unevenly across the slide.
- Smear preparation involves spreading a small amount of sample on a slide and air drying the film before staining and microscopy.
- The conventional method, blood film method, drop and rest method, and water-wash method are the four types of smearing methods.
- Smear microscopy entails collecting a biological sample (typically sputum or other clinical material), fixing it thinly on a glass slide, and staining it with a dye that binds specifically to mycobacteria (making them easier to identify under a microscope).
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The correct option is (D) The ecological footprint of the United States is large because per capita resource use is high.
<h3>
What is ecological footprint?</h3>
- The Global Footprint Network advocates using the ecological footprint to determine how much nature is required to support a certain population or economy.
- The ecological footprint accounting system tracks how much nature is being used and produced.The Ecological Footprint calculates the total productive areas for which a population, a person, or a product competes on the demand side.
- It evaluates the ecological resources required by a specific population or product in order to produce the natural resources it consumes, as well as to absorb its waste, particularly carbon emissions.
- The biocapacity of a city, state, or country, on the supply side, measures how productive its ecological resources are (including cropland, grazing land, forest land, fishing grounds, and built-up land).
- These regions can also be used to absorb the garbage we produce, particularly our carbon emissions from burning fossil fuels, especially if they are left unharvested.
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The temperature control for safety (TCS) food items like dairy products, eggs, meat, and poultry support the growth of bacteria, hence ideal for bacterial growth.
Foods that are more likely to become dangerous are referred to as TCS food. TCS food, in contrast to other foods, requires time and temperature controls to prevent the growth of bacteria. This cuisine has a pH that is either slightly acidic or neutral, contains protein, and is wet. Water is necessary for bacteria to break down the food they ingest in order to proliferate. Water that is not attached to food molecules can promote the growth of bacteria. Water activity or water availability refers to this unbound water. To grow, all bacteria require nutrients or an energy source. Carbohydrates, protein, sugar, and starch are a few nutrients. Milk and dairy products typically include a lot of nutrients, which makes them perfect for bacterial growth.
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I'm not sure if this would answer the whole question but Eukaryotic cells have more specialized functions such as them having a nucleus and Prokaryotic cells do not.
