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Anestetic [448]
3 years ago
8

Suppose an alien life form is discovered on another planet that takes in CH4 from the atmosphere. Which of the following could b

e used to determine what happens to the CH4 after the organism consumes it?
A. chromatography
B. radioactive tracers
C. x-ray diffraction
D. organic synthesis
Biology
1 answer:
sladkih [1.3K]3 years ago
8 0

The right answer is B

A radiotracer is an entity composed of a carrier molecule and a detectable radioactive isotope using devices such as gamma cameras or positron emission tomography.

A radiotracer is either a radioactive isotope alone or the combination of a molecule and a radioactive isotope. In this case, it is said that the molecule is labeled by the radioactive isotope.

A radioactive isotope is an atom whose nucleus, unstable, emits radiation. It could be :

- alpha radiation consisting of two protons and two neutrons.

- a beta radiation consisting of a negative electron (beta) or a positive electron (beta +, positron).

- a gamma radiation consisting of a high energy photon.

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Answer:

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Explanation:

The endosymbiotic theory proposes that mitochondria and chloroplasts were once free-living bacteria that were phagocytized by another cell but not digested. These bacteria got to adapt to their host, and both cells became interdependent.  

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• Both organelles divide by binary fission, not by mitosis, and can synthesize their ribosomes and organelles.    

• Both organelles present a double membrane, a characteristic that reinforces the idea of being phagocyted. The internal membrane looks identical to the bacterial membrane, while the external membrane looks like the eukaryotic one.  

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Explanation:

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Read 2 more answers
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