Answer:
La biología es la ciencia natural que estudia la vida y los organismos vivos, es decir, las estructuras físicas, los procesos químicos, las interacciones moleculares, los mecanismos fisiológicos, el crecimiento y la evolución. La biología reconoce a la célula como el componente básico de la vida, a los genes como portadores clave de la herencia y a la evolución como el mecanismo que influye en la creación y extinción de las especies.
Las disciplinas de la biología se definen por los métodos de investigación utilizados y el tipo de sistema estudiado: la biología teórica utiliza la matemática para formular modelos cuantitativos, mientras que la biología experimental realiza pruebas experimentales para examinar la validez de sus teorías propuestas e investigarlas.
Answer:
Sleep.
Awaken.
Explanation:
The time and duration of circadian rhythms are regulated by the interactions of PER(period) and TIM(timeless) genes and their proteins. The TIM proteins binds with PER- proteins and the two entered the cell nucleus to set up circadian rhythms.
At midday the two genes becomes active,and their DNAs transcribed to form PER-RNA, and TIM -RNA. These RNAs accumulated in the cell nucleus over some hours.
At dusk(night) the amount of these RNAs reached highest levels.and are translated to the PER and TIM -proteins, which bonded together and moved into the cells nucleus causing sleep in the animals.
Hours to dawn,(morning) the concentration of the two proteins exceeded their limit, and signals is sent to their genes to stop transcription, thus the protein(PER and TIM) synthesis is stopped.
At almost dawn, the PER and TIM proteins disintegrates, the cycle begins again and the individual is awake.
the actual CORRECT answer is change.
So,
The environment needs to [change] in order for natural selection to occur.
Don't worry i took the test trust me!
Answer:
A
Explanation:
The protons are positively charged, the electrons are negatively charged, and the neutrons are neutral. Therefore, all things are made up of charges. Opposite charges attract each other (negative to positive). Like charges repel each other (positive to positive or negative to negative
When the cells break down the sugers
