What are the disadvantages of wildlife sanctuaries?

Biology

2 answers:

Marianna [84]4 years ago

8 0

Animals don't like it.

EastWind [94]4 years ago

3 0

Can be harmful to animals unfairly kept against will

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What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time

Elena-2011 [213]

Answer:
It would swell and then burst

Explanation:
If a unicellular organism is surrounded by a hypotonic solution it would swell and burst. This is caused by the fact that hypotonic substances prefer to go into substances with a higher solute (The unicellular organism). If the hypotonic solution would enter into the organism it would swell up and burst.

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3 years ago

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A certain restriction enzyme digest results in DNA fragments of the following sizes: 4,000 bp, 2,500 bp, 2,000 bp, and 400 bp. S

Paladinen [302]

Answer:

Smaller the size of the DNA fragment, farther it moves during electrophoresis. The sketch of the position of the fragments has been drawn in the figure below.

Explanation:

As we know DNA is a negatively charged molecule. So during electrophoresis the fragments move towards the positive electrode because opposite charges attract each other.

Different fragment move different distances according to their size during the electrophoresis. Smallest segment travels the largest distance in the gel medium while the largest one travels least distance.

In the question there are four DNA fragments with base pairs 4000, 2500, 2000 and 400 so the smallest segment with 400bp will be farthest from the starting point and the largest fragment with 4000bp will travel least distance in the gel medium. Their respective positions are shown in the figure below. The starting point is near the negative electrode.