Answer:
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Answer:
Dissolved or gaseous substances have to pass through the cell membrane to get into or out of a cell. Diffusion occurs when particles spread. ... They move from a region where they are in high concentration to a region where they are in low concentration.
Explanation:
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In order to understand the ramifications of a mutation in the Hox genes you must understand what the Hox gene does. To put in simple terms the Hox genes control the body plan so you can think of them as a blueprint. For instance, they are responsible for determining the type of vertebrae in a given segment within the human spinal chord. As well as where body parts are found in insects such as fruit flies. Therefore, a mutation in the Hox gene can lead to body parts and limbs in the incorrect place or order in the body.
Answer:
A. First incubation at 37 Celsius; second at room temperature
Explanation:
When you are sick for some sort of infection your body will raise your body temperature to kill the infection (bacterias, viruses). 37 C it's normal temperature and those pathogens can easily grow up (very fast). 15 minutes it's enough to promote the bacteria reproduction at 37 C, to decelerate you need to change the temperature (a lower one just to decrease the reproduction rate).
Having a low rate reproduction of bacterias it's fine for your culture media, it will last for more time than a culture media with 37 Celsius all the time.
Answer:
The earliest known life-forms are putative fossilized microorganisms, found in hydrothermal vent precipitates, that may have lived as early as 4.28 Gya (billion years ago), relatively soon after the oceans formed 4.41 Gya, and not long after the formation of the Earth 4.54 Gya.
Explanation:
