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Murljashka [212]
2 years ago
9

Explain how the sense of smell works on a molecular level. Be sure to describe what is happening in the brain as well?

Biology
1 answer:
dem82 [27]2 years ago
7 0

Answer:

The smell is one of the senses that is created by the small molecules that are released by the food, aromatic substance, or any substance into the air. When we inhale during the breathing process these small molecules enter our nose and trap in tiny hair of the nose.

These molecules dissolves in mucus present in the nose to reach the specialized receptor cells known as olfactory receptor neurons. These neurons detect the smells and send the information directly to the brain to the olfactory bulbs that work to detect the smell.

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A patient comes to you with a "PUS" sample and asks you to isolate & identify the Staphylococcus aureus form this sample the
Irina-Kira [14]

Answer: Staphylococcus aureus can be isolated from the pus sample through the following steps:

--> Step 1: Describe the appearance of the specimen

--> Step 2: Examine the specimen microscopically

--> Step 3: Culture and report your observations.

--> Step 4: Biochemical testing

Explanation: Staphylococcus aureus are gram positive cocci bacteria that can be isolated from pus samples.Pus samples, which may come from wounds, abscess, burns or sinuses, are the type of samples which do not contain microorganisms and should not contain contaminants providing an aseptic collection technique and sterile container are used.

Staphylococcus aureus can be isolated from the pus sample through the following steps:

--> Step 1: White, yellow, brown, red, or black granules of varying size, shape, and consistency may be found in pus draining from

sinuses while describing the appearance of the pus sample.

--> Step 2: Here the specimen is examined microscopically after being stained with a staining technique called Gram staining. This step is done before culture to know the type of medium to use after gram positive cocci is microscopically seen.

--> Step 3: there are different cultures media that can be used to inoculate and culture a pus specimen. Since we are to isolate staphylococcus aureus, a selective and differential media known as Mannitol salt agar (MSA) is used. The presence of yellow colonies with yellow zone after incubation at 37°C indicate the presence of Staphylococcus aureus or species. There for the last confirmation test known as biochemical test is done.

--> Biochemical test: This is a chemical test that is done to identify a particular bacteria. For staphylococcus aureus, COAGULASE test is used to identify staphylococcus aureus which produces COAGULASE enzyme. A positive COAGULASE test is an indication of the presence of staphylococcus aureus as the bacterium isolate of the specimen.

7 0
3 years ago
Which is Not a feature found on the ocean floor?
Alex Ar [27]

Answer:

D- Estuary

Explanation:

estuaries are where the tide meets a stream, they happen above the water/not very deep in the water

4 0
3 years ago
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Cells make up all living things. If something has cells, it's a living thing. If something does not have cells, it is not a livi
saw5 [17]

Answer:

cell walls and chlorophyll

Explanation:

they are the key difference between the two types of cells .plant cells have chlorophyll and cell walls while animal cells only have a cell membrane

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How are cellular respiration and photosynthesis different? Cellular respiration assists breathing; photosynthesis aids pigmentat
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Celluar respiration breaks down glucose and photosynthesis makes glucose.

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What is the purpose of the nervous system?
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<span>1) maintenance of body homeostasis by regulation and coordination of all organ systems.
2) Acts as the sensor and control center for many systems
3) provides communication between the control center sensors and effectors.


</span>
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