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Eva8 [605]
3 years ago
13

Number eight and nine

Biology
1 answer:
Viefleur [7K]3 years ago
7 0
8: this model is similar to a real life model because it shows what you can have in and around your house



9: the way this model can be useful is by helping show how to build your house the way you want it to be and what you would want
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which argument best explains why viruses are able to reproduce even though they are not living organisms
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When cells are in a(n) ___<br> solution, they are maintaining homeostasis
Vesna [10]

<u>Answer:</u>

When cells are in an <u>isotonic</u> solution, they are maintaining homeostasis.

<u>Explanation:</u>

"Homeostasis" is the process to maintain a stable and relatively constant internal environment. In addition to temperature it is maintained for many other factors too. "Isotonic solution" comprised of two solutions having the similar osmotic pressure across a semipermeable membrane.

Such solution maintain homeostasis of a cell via diffusion process. As in such solution the overall concentration on both sides of the membrane remains equal. The cell membrane command the movement regrading entrance and exit of anything in cell, the membrane control water and ion transport because of its phospholipid bilayer structure.

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lisabon 2012 [21]

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Jawless fish was present before vertebrates.

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Jawless fish has some characteristics of vertebrates and also considered as the ancestor of vertebrates on earth which is similar in appearance with the hagfish. It was present about 500 to 600 million years ago. They consist of cranium but vertebral column is absent. but with the passage of time, evolution occurs and many animals which was the descendant of this jawless fish having vertebral column or backbone in their body.

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