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bonufazy [111]
3 years ago
6

First, Choose... stain is applied, a series of rinses are used, and then a Choose... stain is applied. A Choose... bacteria cult

ure will stain purple or blue, while a Choose... bacteria culture will stain pink.
Biology
2 answers:
Eva8 [605]3 years ago
6 0

Answer:

crystal violet, safranine, gram-positive, gram-negative

Explanation:

Taya2010 [7]3 years ago
5 0

Answer:

primary; counter; Gram-positive; Gram-negative

Explanation:

The illustration is about the <u>Gram-staining procedure.</u>

<em>The procedure is used to distinguish between the bacteria that have a thick cell wall capable of retaining the color of a dye (Gram-positive) or otherwise (Gram-negative). </em>

A smear of the bacterium to be tested is heat-fixed to a clean glass slide after which a suitable primary stain is added, allowed to stay for a few seconds, and rinsed. A mordant is then added, rinsed before a counter-stain is added, and also rinsed. The slide is then allowed to drain off water and then viewed under the microscope using the oil immersion. Gram-positive bacteria will appear blue or purple, taking up the color of the stain while Gram-negative bacteria will appear red under the microscope.

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3 0
2 years ago
The pKa for the side chain of histidine is 6.0. What is the ratio of the deprotonated imidazole side chain to the protonated sid
Solnce55 [7]

Answer:

When the pKa is 6.0, we can determine the fraction of protonated H is by:

pH = pKa + log [A]/[HA]

Where

A = Deprotonated imidazole side

HA = Protonated side

Given, pH = 5.0

5 = 6 + log [A]/[HA]

log [A]/[HA] = -1 (take antilog of both side)

[A]/[HA] = 0.1

The ratio of the deprotonated imidazole side chain to the protonated side chain at pH 5.0 = 0.1

Given, pH = 7.5

7.5 = 6 + log [A]/[HA]

log [A]/[HA] = 1.5 (take antilog of both sides)

[A]/[HA] = 31.62

The ratio of the deprotonated imidazole side chain to the protonated side chain at pH 5.0 = 31.62

7 0
3 years ago
What are some abiotic factors that might effect some biotic factors
Stels [109]

Answer:    An abiotic factor is a non-living factor that influences and resides in an environment. So, things like weather, temperature, and humidity are considered abiotic factors, while things like predators are considered biotic factors.

Explanation:

7 0
3 years ago
How do the various characteristics of animal skulls indicate the importance of one sense over another?
Nadusha1986 [10]
Animal skulls are said to protect the one of the most important organ in the body. Moreover, the bone has also some features that are important such as being able to identify the organ of the animal, knowing somehow the lifespan, diet and other similar biological traits.

Thank you for your question. Please don't hesitate to ask in Brainly your queries. 
8 0
3 years ago
____ 15. which excretory organ eliminates water and some chemical wastes in perspiration?
Nastasia [14]
I think the answer is skin. Skin contains sweat glands which secrete a fluid waste called sweat or perspiration; nonetheless, its primary functions are temperature control and release of pheromone. Its role as a part of the excretory is therefore minimal. Additionally, sweating also maintains the levels of salt in the body.
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3 years ago
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