Answer:
The correct answer is - option e.)
Explanation:
The experiment that was performed by Meselson and Stahl was created to prove that DNA replication is a semiconservative process.
When Bacteria grow on 15N media they incorporate the isotype of nitrogen and after few generations, the culture moved to 14N media where it incorporates as they replicate in semi-conservative mode and one DNA strand comes from the Parent DNA.
The right option for question one is Option (e) Run as one band, at a position expected for DNA containing a 14N:15N ratio equal to 1.
they would be melted and vaporized in the atmosphere.
Explanation:
Meteoroids is piece of solar rock before it strikes the earth surface. Meteorites are rocks that strikes the surface of the earth from space.
- In earth science, meteorite impacts are often attributed with mass extinctions on the earth surface.
- For a meteorite to reach the earth surface, it must has a very large diameter.
- This big rocky mass must be able to escape the earth geomagnetic field and the ionizing radiation in the upper reaches of the earth atmosphere.
- Meteoroids of smaller sizes cannot escape the earth's atmosphere and would completely ionized and melted.
Learn more:
Meteorite brainly.com/question/6372454
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Plastic tupperware containers
Explanation:
1. cell membranes are partialy permeable, only allowing passage to some certain molecules.
2. diffusion is the movement of molecules across partially permeable membrane down concentration gradient.
3. the molecules are too big to pass through partially permeable membrane. the concentration of the molecule might be higher in the cell than in the solution/surroundings.
Answer:
like DNA, RNA is made up of nucleotides.There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.
Explanation:
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