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Mamont248 [21]
3 years ago
7

To measure the activity of the human brain during certain thought processes, a short-lived radioactive sugar is injected in the

carotid artery and is utilized by those cells that are most active. This shows up on a PET scan and demonstrates the detection of ___.
Biology
1 answer:
joja [24]3 years ago
8 0

Answer:

The correct answer is: isotopes.

Explanation:

<u>PET scan (positron emission energy) is an imaging technique that is used to help in the diagnosis of a disease by observing metabolic processes in the body.</u>

PET scans, although very expensive, are of great utility in the fields of Oncology, Neurology and Cardiology.

<u>Isotopes are atoms that share the same number of protons and electrons but differ in the number of neutrons. This gives the isotopes different properties than regular atoms.</u> In PET, isotopes are radiotracers used to discern the biologic pathway of any compound.

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Different layers of the earth exist due to what?
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Study the diagram shown.
nlexa [21]

Answer:

those are homologous structures, they share a common ancestor, they have similar bones but  different functions

4 0
3 years ago
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The phrase "eating like a bird” is often used to express that someone only eats a small amount of food. Explain in detail why th
inn [45]

Answer:

The phrase "eating like a bird” is inaccurate because the eating habits of birds and the amount of food they consume are a function of their size, activity and metabolism, amount of food that would be insufficient for one person.

Explanation:

The phrase "eating like a bird" establishes a comparison between the feeding of a bird and that of a person, referring to the small amount of food that birds consume.

In fact, birds consume food according to the high energy demand of flying, its weight, size, activity and metabolism. A real comparison would establish that birds even eat more than people.

The feeding of each species is different, and the phrase is inaccurate because it only states that a person who eats little food (less than their requirements) is consuming what would really be enough for a bird.

Learn more:

brainly.com/question/9066680

4 0
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