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.
Given what we know, we can confirm that among the options listed, the more appropriate example of positive phototropism is the <u><em>houseplant </em></u><u><em>growing towards the </em></u><u><em>window</em></u><u><em>. </em></u>
<h3>What is positive phototropism?</h3>
- This is a photosensitive reaction that occurs in plants.
- Positive phototropism is described as the growth of plants towards the source of light.
- While negative phototropism is when the plants lean away from the light.
- Sunflowers and bananas, which lean towards the sun as they grow, are prime examples of positive phototropism.
Therefore, given the definition of positive phototropism as the growth of an organism towards a source of light, we can confirm that the option stating that the <u><em>houseplant </em></u><u><em>grows towards the window</em></u> is the best example of this concept, given that the window is the source of light for the plant.
To learn more about phototropism visit:
brainly.com/question/16915126?referrer=searchResults
Answer:80
Explanation:
the answer is 80 because you just do 705-625= 80
Answer:
its definitely c because the past ancestors of ours never layed eggs nor did dogs, plus we were never reptiles and lastly, dogs and humans are both mamals and give live birth so their more related than snakes and humans. hope this helped.
Answer: D - Lipids
Lipids provide a long term energy storage because they contain longer C-H bonds compared to the other organic molecules, making it easier for them to store larger amount of energy. Moreover, upon burning they produce twice the amount of calories compared to that of the carbohydrates.
