Answer:
(C) The molecules essential to life today could have formed under early Earth conditions.
Explanation:
The results of Miller's experiments better support the hypothesis that molecules essential for life today could have formed under early Earth conditions. That's because Miller, in his hope, created an environment very similar to primitive earth. This environment consisted of water vapor, hydrogen gas, methane and ammonia, but this environment was able to synthesize organic molecules after receiving a discharge of electric sparks, which can be seen in the theory that explains the origin of life on earth.
The earth's atmosphere had a different composition from today. It is believed to be composed of methane, ammonia, hydrogen and water vapor. Strong lightning strikes and sun-radiated ultraviolet rays would have promoted a wide variety of chemical reactions in the atmosphere, leading to the emergence, among others, of simple organic molecules such as alcohols, amino acids and sugars.
Answer:
Two groups of proteins called cyclins and cyclin-dependent kinases (Cdks), are responsible for the progress of the cell through the various checkpoints. The levels of the four cyclin proteins fluctuate throughout the cell cycle in a predictable pattern
Explanation:
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Enzymes are affected by changes in pH. The most favorable pH value - the point where the enzyme is most active - is known as the optimum pH
Answer:
Periods correspond to the relationship of orbitals, or likely areas in which electrons will be found, inside the outermost shell of the atom. Successive periods down the table correspond to atoms with a more electron-rich core of inner shells.
Explanation: