Until more Oxygen accumulated in the atmosphere
Answer:
they both have nucleus, cytoplasm, cell membrane and mitochondria
Explanation:
Proteins, which are the building blocks from which the structures of living organisms are constructed (this includes almost all enzymes, which catalyse organic chemical reactions) Nucleic acids, which carry genetic information. Carbohydrates, which store energy in a form that can be used by living cells.
Answer:
The answer is D.
Explanation:
Out of the options given in the question, the best one for this example is the Positron Emission Tomography (PET Scane) because it is stated that the active regions of the brain contain high concentration of glucose.
The reason is that a substance similar to glucose is used as an indicator in PET scans to show the part of the body where the inspection is required by emitting gamma rays.
I hope this answer helps.
