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iren2701 [21]
3 years ago
11

Which of the following describes a positron emission tomography (PET) scanner? 1: A device that uses magnetic fields to produce

images of brain structures 2: A device that uses magnetic fields to measure blood flow 3: A device that uses radioactive fluid to determine the active areas of the brain 4: An X-ray device that can create a 3D model of the brain
Biology
1 answer:
Delvig [45]3 years ago
7 0

Answer:

3: A device that uses radioactive fluid to determine the active areas of the brain

Explanation:

A positron emission tomography (PET) scan is an imaging test that helps reveal how your tissues and organs are functioning. A PET scan uses a radioactive drug (tracer) to show this activity. This scan can sometimes detect disease before it shows up on other imaging tests.

Depending on the type of exam, the radiotracer is injected, swallowed or inhaled as a gas. It eventually accumulates in the area of the body under examination. A special camera or imaging device detects radioactive emissions from the radiotracer. The camera or device produces pictures and provides molecular information.

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What is the basic unit of classification of living beings​
SpyIntel [72]

Answer:

The basic unit of classification of living beings, from the taxonomic point of view, is species.

Explanation:

Taxonomy is a discipline that deals with the classification of living beings, its basic unit of classification being the species category.

<u>A species includes all the individuals with morphological and functional similarities</u>, which also have the capacity to make crosses among them and have a descendant with the same characteristics, including fertility.

6 0
3 years ago
In Ursa gummi, the famed Gummy Bear soldiers, a quality that is sought is bravery (dominant phenotype). The recessive phenotype
kotykmax [81]

Answer:

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Explanation:

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4 0
3 years ago
Melissa is studying a Gram-stained slide of curd bacteria. She sees many rod-shaped, violet-colored bacteria.What type of bacter
Serhud [2]

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