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.
Answer:
I don't know how to do this. But I'll explain catalysts using these words as keywords.
Explanation:
Catalysts don't increase activation energy. they lower the activation energy. they are recyclable as they are not consumed in reactions. they accelerate the rate of the chemical reaction.
Since the radiation has no mass .It is Gamma radiation.
Step by Step Explanation:
Characteristics of Gamma radiation are as follows:
- Gamma radiations are chargeless.
- It is Electromagnetic wave having a very short wavelength.
- It is not effected by the electric or magnetic field.
- It has velocity equal to light in vaccum .
- It has a very high intensity and can penetrate long distances.
- It has a very low ionizing power. i.e. it does not ionize the medium in whic it travels.
Gamma radiation has proved itself to be very useful in radioactive treatment of cancer due to its high penetrating power.
Answer:
The answer is C I Hope's this helps with Your test
Mitochondria are tiny organelles inside cells that are involved in releasing energy from food.This process is known as cellular respiration. It is for this reason that mitochondria are often referred to as the powerhouses of the cell. Cells that need a lot of energy, like muscle cells, can contain thousands of mitochondria.
